ROBOT ARM PRO - Rapid Electronics

ROBOT ARM PRO - Rapid Electronics

EDUCATIONAL ROBOT

ROBOT ARM PRO

MOUNTING INSTRUCTIONS: Model RA1-PRO

©

AREXX - THE NETHERLANDS V0610

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Table of Contents

1.

2.

Product description ROBOT ARM

Required tools

Part

4.

5.

3

5

Starting

6.

7. and 27

7.1

7.2

7.3

Connection of USB interface Windows 29

Connection of USB interface LINUX 32

33 7.4 Testing the USB Interface

7.5

Selftest

7.7

LINUX 34

Calibration

7.8

8.

9.

40

Programming 45

xx. APPENDIX

A.

C. Connectors

55

56

D. diagram 57

58

Robot

B. Circuit diagram Power Supply

AREXX and ROBOT ARM are registered trademarks of AREXX Engineering - HOLLAND.

© English translation (March 2006): AREXX Engineering (NL).

This manual is protected by laws of Copyright. Any full or partial reproduction of the contents are forbidden without prior written authorization by the European importer:

AREXX Engineering - Zwolle (NL).

Manufacturer and distributor cannot be held responible for any damage resulting from mishandling, mounting mistakes or disrespect of the instructions contained in the manual.

Subject to changes without prior notice.

Technical mounting support:

Manufacturer:

AREXX Engineering

DAGU HI-TECH

European importer:

AREXX Engineering

ZWOLLE The Netherlands

© AREXX Holland and DAGU China

© English translation: AREXX - The Netherlands

WWW.AREXX.COM

WWW.ROBOTERNETZ.DE

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1. PRODUCT DESCRIPTION ROBOT ARM

This big metal Robot Arm is ideally suited for school and educational projects to learn the basics of electronics, mechanics and programming. The ROBOT

ARM is controlled by a powerful ATMEGA64 microcontroller that is programmable via Open Source Tools in C. The user can upload his own programs simply and easily via the supplied USB interface and the Uploader software.

The I/O in- and outputs together with the flexible I2C bus system allow the addition of extra modules thus enabling the robot to react to its environment.

Contents of the package:

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-

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Complete Robot Arm construction set (mechanics and electronics)

USB interface with lead

CD-ROM containing all required software and manuals

1.2. Specifications:

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-

-

-

-

-

-

-

-

ATMEGA64 processor

Various available I/O In/Outputs

I2C Bus

6 maxi-servos

100% metal

Armlenght: 390 mm

Height: 460 mm

Base diameter: 210 mm

Power supply: 6-12V

Warnings

* The right of return does not apply after opening the plastic bags containing parts and components.

* Read the manual thoroughly prior to assembling the unit.

* Be careful when handling tools.

* Do not assemble the robot in presence of small children. They can get hurt with the tools

or swallow small components and parts.

* Check the correct polarity of the batteries.

* Make sure that batteries and holder remain always dry. If the ROBOT ARM gets wet, remove the

batteries and dry all parts as thoroughly as possible.

* Remove the batteries if the ROBOT ARM will not be used for more than one week.

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1.3. What can we do with the Robot Arm?

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-

-

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Transfer example and new programs into the Robot Arm.

Control the Robot Arm via a keyboard

Control and program the Robot Arm via the RACS software.

Extend the Robot Arm with ready-to-use extension modules so that it can hear, feel and see in order to react to its

environment

Just like genuine robots can build e.g. cars, this robot can also do some tasks for you.

The Robot Arm can communicate with its environment and many other units through its I2C interface.

Artificial intelligence: The Robot Arm improves its software automatically through its selflearning software.

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2. Required tools

N e e d l e - n o s e pliers

Sidecutter Screwdriver set Screwdriver

Included

Selftapping screws (Parker)

Selftapping screws behave like wood screws i.e. they cut a thread into the material in a rotating motion that functions like a nut. To this end, this type of screw has a larger thread and a sharper tip as a normal screw.

2

1

3

Selftapping screws have a cutout at the top that makes it easier to drill into the material.

The best way to fasten such a screw is:

1 Drive the screw into the material

2 Slightly loosen the screw

3 Tighten the screw again

If the screws are loosened and tightened too often, the hole enlargens gradually and the screw doesn’t fit properly anymore.

Locknut

Fastening a locknut

Do not force the screws otherwise the plastic may crack.

Locknut

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3. PART LIST

Servomotor

CD

USB lead Keyboard

O 6 pcs. maxi

Metall-Disc with axis

O 1 pc.

Servo-Disc

Plastic

Servo-Disc

Metall Big A

O 1 pc.

O 1 pc.

Servo-Disc

Metall Big B

O 3 pcs

Servo-Hebel

Big

O 1 pc.

Servoholder

O 1 pc.

Mounting arm

O 1 pc.

Montage

Winkel

O 3 pcs.

Spacer

M3x6

O 1 pc.

Spacer

M3x16

Spacer

M3x40

O 1 pc.

Spiral

O 1 pc.

O 4 pcs

O 2 pcs.

O 1 pc.

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O 4 pcs.

Finger Part A

Finger Part B Fingerspitze

O 1 pc.

O 1 pc.

O 4 pcs.

Servo bottom plate Servo coupling rod

M3 - M4

Servo coupling rod

M2 - M3

Program adaptor

O 1 pc.

Robot Arm base

O 1 pc.

Kuppelstange

PCB

O 2 pcs.

O 2 pcs.

O 1 pc.

Programming lead

Servo extension lead

O 1 pc.

Keyboard lead

O 1 pc.

Servos-Hebel

Klein

O 1 pc.

O 1 pc.

Round-head screw

M3x20

Selftapping screw

M3.2x6

O 5 pcs.

Round-head screw M3x6

Round-head screw M3x8

O 1 pc.

O 9 pcs.

Round-head screw

M3x12

Nut

M3

O 4 pcs.

Locknut M2

O 2 pcs.

O 42 pcs.

O 9 pcs.

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O 24 pcs.

O 3 pcs.

4. Mounting instructions for mechanical

parts

4.1. Mounting parts in this construction kit

Bottom plate

Arm

Gripper

Option

Abstandsbolzen als Kabelführung von Servokabels

Round-head screw

M3x8

O 8 pcs

Spacer

M3x16

O 2 pcs.

Selftapping screw

M3.2x8

O 2 pcs.

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4.2. Mounting the Servo-Arm:

Following parts are required:

1 pc. Bottom plate

1 pc. Arm

2 pcs. Spacer M3x16

4 pcs. Round-head screw M3x8

2 pcs. Selftrapping screw M3.2x8

Arm

Screw M3.2x8

Option

Spacer M3x16

Round-head screw M3x8

Option

Spacer M3x16

Round-head screw M3x8

Bottom plate

ATTENTION!

Nehmen Sie erst die komplette Verkabelung vor, bevor Sie diese Schritte ausführen. Den Schaltplan für den Kabelanschluß finden Sie auf Seite 20.

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4.3. Mounting the gripper:

Following parts are required;

1 pc. Bottom and Arm

1 pc. Gripper

2 pcs. Selftapping screw M3.2x8

Selftapping screw M3.2x8

Bottom plate

Montieren Sie die Servoachse auf dem Servo, beachten Sie dabei bitte die kleine

Detailskizze!

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READY !

Selbstzapffendeschraube

M2.3x8

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Terminal assignment on the main PCB

Connect the servos via the servo extension leads and use the spiral to run the wires properly.

Servo 6, 5, 4, 3, 2,1

I2C Extra I / O

SPI

Start

Stop

Reset

DC Socket

Keyboard

Battery terminal

ON/OFF switch

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PROGRAMM / UART

ISP

5. Starting the Robot

1.

2.

3.

Start by assembling the mechanical and electronic modules of the

Robot Arm by reading the mounting instructions.

If necessary, connect the 9V mains adaptor (7- to 12 V max.).

Switch the robot on with the main On/Off switch.

Voltage supply

Mains adaptor

There are 2 options to power the robot. The easiest solution is to connect a mains adaptor with an output voltage of 7-12V / 2 Amps to the DC 9V input.

This way, the voltage is connected to the INPUT of the voltage regulator.

Batteries

The second solution is to connect a battery to the battery terminal.

This way, the battery voltage is connected to the OUTPUT of the voltage regulator and should therefore never exceed 5.5V!! If you use 4 pieces of normal

1.5V mono batteries (‘D’ cells), you should connect a diode in series (in

forward direction) to the positive wire. Even more appropriate would be 4 pieces of the large 1.2V mono D size accumulators.

If the voltage drops below

< 4.4 V, a warning is displayed.

WARNING!

The max. voltage that the

RobotLoader is able to measure is 5.1 V!

Battery terminal

5,5 Volt MAX !

DC Terminal

7 to 12 Volt

As soon as the Robot Arm is connected to a power supply, the servos move slightly and the yellow LED (LED1) lights up.

So, the start was not as difficult as that and it looks as if the job is finished now. But the real hard work does only start now.....!

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6. Software Installation

Let’s do the software installation now. A properly installed software is of paramount importance for all following chapters.

As you need administrator rights, you have to log into your system as an administrator!

We recommend to read the whole chapter thoroughly first and then start with the installation step by step.

The user must have basic knowledge of Windows or Linux based computers and be familiar with current programs such as file managers, web browsers, text editors, file compression software (WinZip, WinRAR, unzip and others) and eventually Linux shell etc.! If your computer knowledge is very limited, you should learn more about systems before you start using the Robot Arm. This manual is not intended as an introduction to computers which would go much too far! It is only aimed at the Robot Arm, its programming and the specific software required.

The Robot Arm CD-ROM

You have probably already inserted the CD-ROM into your computer drive - if not, please do it now! In Windows, the CD menu should appear shortly afterwards per autostart. If not, you can open the file “start.htm” with a web browser as e.g. Firefox in the main directory of the CD through file manager. By the way, the installation files for Firefox are also on the CD in the folder

<CD-ROM drive>:\Software\Firefox if ever you haven’t installed an updated web browser (it should be at least

Firefox 1.x or Internet Explorer 6 ...)

After the language selection you will find in the CD menu, in addition to this manual (that you can also download from our home page), information, data sheets and pictures, also the menu item “Software”. It contains all software tools, USB drivers and example programs with source code for the Robot Arm.

Depending on the safety settings of your web browser, you can start the installation programs directly from the CD!

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If the safety settings of your web browser don’t allow a direct installation from the CD-ROM, you have to copy the files first into a directory on your hard disc and start the installation from there. For more details please refer to the software page in the CD menu. Alternatively, you can also switch to the CD drive through a file manager and install the software from the CD. The names of the directories are self-explanatory so that you can allocate them easily to the corresponding software packages and operating systems.

WinAVR - for Windows

We will start with the installation of WinAVR. WinAVR is - as the name says - only available for Windows!

Linux users can skip to the next section.

WinAVR (pronounce like the word “whenever”) is a collection of many useful and necessary programs for the software development for AVR micro controllers in C language. In addition to the GCC for AVR (designated by the term

“AVR-GCC”, more details later) WinAVR includes the convenient source text editor “Programmers Notepad 2” that we will also use for the program development of the Robot Arm.

WinAVR is a private project that is not supported by a company. It is available for free in the internet. You will find updated versions and more information at: http://winavr.sourceforge.net/

In the meantime the project gets the official support from ATMEL and the

AVRGCC is available for AVRStudio, the development environment for AVR’s from ATMEL. However we will not describe it in this manual as Programmers

Notepad is much better suited for our purpose.

The WinAVR installation file is on the CD in the folder:

<CD-ROM drive>:\Software\AVR-GCC\Windows\WinAVR\

The installation of WinAVR is simple and self-explanatory. Normally you don’t need to change any settings. So, just click on “Continue”!

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If you use Windows Vista or Windows 7, you must install the latest version of

WinAVR! It should also work perfectly with Windows 2K and XP. If not, you can try one of the older versions that are also on the CD (before you make a new installation of WinAVR, you have to uninstall the existing version first!).

Officially Win x64 is not yet supported but the CD contains a patch for Win x64 systems if a problem arises. You will find more information on the software page of the CD menu.

AVR-GCC, avr-libc uad avr-binutils - for Linux

(Windows users can skip this section!)

Linux might require more effort. Some distributions already contain the required packages but they are mostly obsolete versions. Therefore you need to compile and install newer versions. It is impossible to describe in detail the numerous Linux distributions as SuSE, Ubuntu, RedHat/Fedora, Debian,

Gentoo, Slackware, Mandriva etc. that exist in many versions with their own particularities and we will keep here only to the general lines.

The same applies to all other Linux sections in this chapter!

The procedure described here must not necessarily work for you. It is often helpful to search in the internet e.g. for “<LinuxDistribution> avr gcc” or similar.

(Try different spellings). The same applies to all other Linux sections - of course with the suitable keywords! If you encounter problems with the installation of the AVR-GCC, you can also take a look in our robot network forum or in one of the numerous Linux forums. First of all, you have to uninstall already installed versions of the avr-gcc, the avr-binutils and the avr-libc because, as said, these are mostly obsolete. You can do that via the package manager of your distribution by searching for “avr” start up and uninstall the three above mentioned packages - as far as they exist in your computer. You can find out easily if the avr-gcc has already been installed or not via a console as e.g.

> which avr-gcc

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If a path is displayed, a version is already installed. So just enter:

> avr-gcc --version and look at the output. If the displayed version is smaller than 3.4.6, you have to uninstall in any case this obsolete version.

If the version number lies between 3.4.6 and 4.1.0, you can try to compile programs (see following chapter). If it fails, you have to install the new tools.

We will install hereafter the currently most updated version 4.1.1 (status March

2007) together with some important patches.

If the packages above do not appear in the package manager although an avr-gcc has definitely been installed, you need to erase manually the relevant binary files- i.e.search in all /bin, /usr/bin etc. directories for files starting with

“avr” and erase these (of course ONLY these files and nothing else!). Eventually existing directories as /usr/avr or /usr/local/ avr must also be erased.

Important: You have to make sure that the normal Linux development tools

as GCC, make, binutils, libc, etc. are installed prior to compiling and installing!

The best way to do so is via the package manager of your distribution. Every

Linux distribution should be supplied with the required packages on the installation CD or updated packages are available in the internet.

Make sure that the “texinfo” program is installed. If not, please install the relevant package before you continue - otherwise it will not work!

Having done that, you can start with the installation itself.

Now you have two options: either you do everything manually or you use a very simple to use installation script.

We recommend to try the installation script first. If this doesn’t work, you can still install the compiler manually.

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Attention:

You should have enough free disk space on your hard disk! Temporarily more than 400Mb are required. Over 300Mb can be erased after the installation but during the installation, you need all the space.

Many of the following installation steps require

ROOT RIGHTS, so please log

in with “su” as root or execute the critical commands with “sudo” or something similiar as you have to do it in Ubuntu e.g. (the installation script, mkdir in /usr/ local directories and make install require root rights).

Please note in the following the EXACT spelling of all commands!

Every sign is important and even if some commands look a bit strange, it is all correct and not a typing mistake! (<CD-ROM-drive> has of course to be replaced by the path of the CD-ROM drive!)

The folder on the CD:

<CD-ROM drive>:\Software\avr-gcc\Linux contains all relevant installation files for the avr-gcc, avr-libc and binutils.

First of all, you have to copy all installation files in a directory on your hard disk

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this applies for both installation methods! We will use the Home directory

(usual abbreviation for the current home directory is the tilde: „~“):

> mkdir ~/Robot Arm

> cd <CD-ROM drive>/Software/avr-gcc/Linux

> cp * ~/Robot Arm

After the successful installation you can erase the files to save space!

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Automatic Installation Script

Once you have made the script executable via chmod, you can start immediately:

> cd ~/Robot Arm

> chmod -x avrgcc_build_and_install.sh

> ./avrgcc_build_and_install.sh

Answer “y” to the question if you want to install with this configuration or not.

PLEASE NOTE: The compilation and installation will take some time depending on the computing power of your system (e.g about 15 min. on a 2GHz

Core Duo Notebook. Slower systems will need longer).

The script will include also some patches. These are all the .diff files in the directory.

If the installation was successful, following message will be displayed:

(./avrgcc_build_and_install.sh)

(./avrgcc_build_and_install.sh) installation of avr GNU tools complete

(./avrgcc_build_and_install.sh) add /usr/local/avr/bin to your path to use the avr GNU tools

(./avrgcc_build_and_install.sh) you might want to run the following to save disk space:

(./avrgcc_build_and_install.sh)

(./avrgcc_build_and_install.sh) rm -rf /usr/local/avr/source /usr/local/avr/build

As suggested, you can execute

rm -rf /usr/local/avr/source /usr/local/avr/build

This erases all temporary files that you will not need anymore.

You can skip the next paragraph and set the path to the avr tools.

If the execution of the script failed, you have to look attentively to the error message (scroll the console up if necessary). In most cases it is just a matter of missing programs that should have been installed earlier (as e.g. the before mentioned texinfo file). Before you continue after an error, it is recommended to erase the already generated files in the standard installation directory “/usr/ local/avr“ – preferably the whole directory.

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If you don’t know exactly what has gone wrong, please save all command line outputs in a file and contact the technical support. Please join always as much information as possible. This makes it easier to help you.

GCC for AVR

The GCC is patched, compiled and installed a bit like the binutils:

> cd ~/Robot Arm> bunzip2 -c gcc-4.1.1.tar.bz2 | tar xf -

> cd gcc-4.1.1

> patch -p0 < ../gcc-patch-0b-constants.diff

> patch -p0 < ../gcc-patch-attribute_alias.diff

> patch -p0 < ../gcc-patch-bug25672.diff

> patch -p0 < ../gcc-patch-dwarf.diff

> patch -p0 < ../gcc-patch-libiberty-Makefile.in.diff

> patch -p0 < ../gcc-patch-newdevices.diff

> patch -p0 < ../gcc-patch-zz-atmega256x.diff

> mkdir obj-avr

> cd obj-avr

> ../configure --prefix=$PREFIX --target=avr --enable-languages=c,c++ \

--disable-nls --disable-libssp –with-dwarf2

> make

> make install

After the \ just press Enter and continue to write. This way the command can be spread over several lines, but you can also just drop it.

AVR Libc

And last but not least the AVR libc:

> cd ~/Robot Arm

> bunzip2 -c avr-libc-1.4.5.tar.bz2 | tar xf -

> cd avr-libc-1.4.5

> ./configure --prefix=$PREFIX --build=`./config.guess` --host=avr

> make

> make install

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Important: at –build=`./config.guess` make sure to put a backtick ` (à <-- the grave accent on the a! ) and not a normal apostrophy or quotation marks as this wouldn’t work.

Set the Path

You must make sure now that the directory /usr/local/avr/bin is registered in the path variable otherwise it will be impossible to retrieve the avr-gcc from the console or from the makefiles. To that end, you have to enter the path in the file /etc/profile or /etc/environment or similiar (varies from one distribution to another) – separated by a colon “:” from the other already existing entries. It could look in the file like:

PATH=”/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/local/avr/bin“

Now enter in a console “avr-gcc -–version“ as described above. If it works, the installation was successfull!

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Manual Installation

If you prefer to install the compiler manually or the installation via th script failed, you can follow the instructions below.

The description is based on following article:

http://www.nongnu.org/avr-libc/user-manual/install_tools.html

that is also included on the CD in PDF format in the AVR Libc documentation:

<CD-ROM drive>:\Software\Documentation\avr-libc-user-manual-1.4.5.pdf

Our description here is much shorter but includes a few important patches.

Without these, some tings will not work properly.

First of all we have to create a directory in which we wil install all tools. That should be /usr/local/avr.

Also enter in a console AS A ROOT:

> mkdir /usr/local/avr

> mkdir /usr/local/avr/bin

It must not necessarily be this directory. We just create the variable $PREFIX for this directory:

> PREFIX=/usr/local/avr

> export PREFIX

This must be added into the PATH variable:

> PATH=$PATH:$PREFIX/bin

> export PATH

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Binutils for AVR

Now you must unpack the sourcecode of the binutils and add a few patches.

We suppose in our example that you have copied everything into the home directory ~/Robot Arm:

> cd ~/Robot Arm

> bunzip2 -c binutils-2.17.tar.bz2 | tar xf -

> cd binutils-2.17

> patch -p0 < ../binutils-patch-aa.diff

> patch -p0 < ../binutils-patch-atmega256x.diff

> patch -p0 < ../binutils-patch-coff-avr.diff

> patch -p0 < ../binutils-patch-newdevices.diff

> patch -p0 < ../binutils-patch-avr-size.diff

> mkdir obj-avr

> cd obj-avr

Now execute the configure script:

> ../configure --prefix=$PREFIX --target=avr --disable-nls

This script detects what is available in your system and generates suitable makefiles. Now the binutils can be compiled and installed:

> make

> make install

Depending on the computing power of your system, this can take a few minutes. That applies also to the next two sections, especially to the GCC!

Java 6

The RobotLoader (see Info below) has been developed for the Java platform and is suitable for Windows and Linux (theoretically also for operating systems like OS X but AREXX Engineering is unfortunately not yet in a position to give official support). To make it work, you need to install an updated Java Runtime

Environment (JRA). It is often already installed on the computer but it must be at least version 1.6 (= Java 6)! If you have no JRE or JDK installed, you must install the supplied JRE 1.6 from SUN Microsystems or alternatively download a newer version from http://www.java.com or

http://java.sun.com

.

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Windows

The JRE 1.6 for Windows is in following folder:

<CD-ROM drive>:\Software\Java\JRE6\Windows\

Under Windows the installation of Java is very simple. You just have to start the setup and follow the instructions on the screen - that’s it. You can skip the next paragraph.

Linux

Under Linux the installation doesn’t present any major problems although some distributions require some manual work.

In the folder:

<CD-ROM drive>:\Software\Java\JRE6\ you will find the JRE1.6 as an RPM (SuSE, RedHat etc.) and as a self-extracting archive “.bin“. Under Linux it is advisable to look for Java packages in the package manager of your distribution (keywords e.g. „java“,

„sun“, „jre“, „java6“ ...) and use the packages of your distribution rather than those on the CD-ROM! However make sure to install Java 6 (=1.6) or a newer version but definitely not an older one!

Under Ubuntu or Debian, the RPM archive doesn’t work directly. You will have to use the package manager of your distribution to find a suitable installation package. The RPM should however work well with many other distributions like RedHat/Fedora and SuSE. If not, you always have the solution to unpack the JRE (e.g. to /usr/lib/Java6) from the self-extracting archive (.bin) and set manually the paths to the JRE (PATH and JAVA_HOME etc.)

.

Please refer to the installation instructions from Sun that you will find also in the above mentioned directory and on the Java website (see above).

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You can check if Java has been correctly installed by entering the command

“java-version” in a console. The output should be approximately as follows: java version “1.6.0”

Java(TM) SE Runtime Environment (build 1.6.0-b105)

Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)

If the output is totally different, you have either installed the wrong version or there is another Java VM installed in your system.

Robot Loader

The Robot Loader has been developed to load easily new programs and all extension modules into the Robot Arm (as long as the modules are fitted with a compatible bootloader). Moreover it contains a few useful extra functions as e.g. a simple terminal program.

It is not necessary to install the RobotLoader. Just copy the program somewhere in a new folder on the hard disk.

<CD-ROM drive>:\Software\RobotLoader\RobotLoader.zip

Unpack the program somewhere on your hard disk e.g. in a new folder C:\

Programme\RobotLoader (or similiar). This folder contains the

RobotLoader.exe file that you can start with a double-click.

The Robot Loader program itself is in the Java archive (JAR) RobotLoader_lib.

jar. Alternatively you can start this via the command line:

Under Windows:

java -Djava.library.path=”.\lib” -jar RobotLoader_lib.jar

Linux:

java -Djava.library.path=”./lib” -jar RobotLoader_lib.jar

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The long -D option is necessary to enable the JVM to find all used libraries.

Windows doesn’t require this and you can just start with the .exe file. Linux requires the shell script ”RobotLoader. sh“. It might be necessary to make the script executable (chmod -x ./RobotLoader.sh). After that you can start it in a console with “./RobotLoader.sh“.

It is advisable to create a shortcut on the desktop or in the start menu to make the start of the Robot Loader more convenient. Under Windows make a right click on the RobotLoader file.exe and then click on “Desktop (create shortcut)” in the “Send to” menu.

Robot Arm Library, Robot Arm CONTROL Library and Example Programs

The Robot Arm Library and the related example programs are in a zip archive on the CD:

<CD-ROM drive>:\Software\Robot Arm Examples\Robot ArmExamples [MINI].zip

Just unpack them directly into a directory at your convenience on the hard disk. It is recommended to unpack the example programs into a folder on a data partition. Or in the “My files” folder in a sub-folder “Robot Arm\Examples\“ or else under Linux into the Home directory. It’s entirely up to you.

The individual example programs will be discussed later in the software chapter!

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7. Programmer and Loader

To load a HEX Robot Arm program from the PC into the Robot Arm, we will use the USB programming adaptor and our RobotLoader software.

The loose USB port adaptor transmitter/receiver (transceiver) included in the package must be connected on one side to a USB port of the computer and on the other side to the Prog/UART port of the Robot Arm PCB.

The program upload into the Robot Arm erases automatically the previously existing program.

USB Programming adaptor

RobotLoader software

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7.1. Robot Loader

As said, the RobotLoader has been developed to upload easily new programs into the Robot Arm and into all our robots (provided that they contain a compatible bootloader).

RobotLoader

If the voltage drops below

< 4.4 V, a warning is displayed.

The maximum voltage that the RobotLoader is able to measure, is 5.1 V!

Weiterhin sind ein paar nützliche Zusatzfunktionen integriert, wie z.B. ein einfaches Terminalprogramm.

Terminal Fenster

Den RobotLoader selbst braucht man nicht installieren – man kann das Programm einfach irgendwo in einen neuen Ordner auf die Festplatte kopieren..

- 28 -

7.2. Connection of the USB interface – Windows

Linux users can skip to the next section!

There are several options to install the USB interface, the easiest being the installation of the

driver BEFORE the first connection of the hardware.

The CD contains an installation program for the driver.

For

32 and 64 Bit Windows 7, XP, Vista, Server 2003 and 2000 systems:

<CD-ROM drive>:\Software\USB_DRIVER\Win2k_XP\CDM_Setup.exe

For old

Win98SE/Me systems, such a handy program does unfortunately

not exist. You need to install an older driver manually after connecting the equipment (see below).

Just execute the installation program. There will just be a short note that the driver has ben installed and that’s all.

Now you can connect the USB interfac to the PC.

PLEASE DO NOT

CONNECT TO THE ROBOT YET! Just connect to the PC via the USB lead.

Please touch the PCB of the USB interface only at the edges or at the USB plug or at the plastic shell of the programming plug (see safety instructions on static discharges)! Please avoid touching any of the components on the PCB, soldering points or contacts of the IDE connector unless absolutely necessary in order to prevent static discharges!

The previously installed driver will be used automatically for the device without any help from your side. Under Windows XP/2k small speech bubbles appear at the bottom above the task bar. The last message should be “The device has been successfully installed and is ready for use!”.

If you have connected the USB interface before the installation (or use

Win98/Me) – it doesn’t matter so much. Windows will ask you for a driver. This

installation method is also possible. The driver is also in unpacked format on the CD.

- 29 -

If you are in this situation, a dialogue appears (under Windows) to install the new driver. You have to indicate the path to the system where it can find the driver. Under Windows 2k/XP you need to select first the manual installation and not to look for a web service. On our CD the driver is in the above mentioned directories.

So, just indicate the directory for your Windows version and eventually a few other files that the system doesn’t find automatically (they are all in the directories mentioned below!) ...

Under Windows XP and later versions there is often a message that the FTDI drivers are not signed/verified by Microsoft (normally not here as the FTDI drivers are signed). This is irrelevant and can be confirmed without any problem.

Operation

For

32 and 64 Bit Windows 7, XP, Vista, Server 2003 and 2000 systems:

<CD-ROM drive>:\Software\USB_DRIVER\Win2k_XP\FTDI_CDM2\

For older

Windows 98SE/Me systems:

<CD-ROM drive>:\Software\USB_DRIVER\Win98SE_ME\FTDI_D2XX\

After the installation of the driver a re-start of the computer may be necessary with older versions like Win98SE! PLEASE NOTE: Under Win98/Me only one of both drivers is working: Either Virtual Comport or the D2XX driver from FTDI! Unfortunately there is no driver that offers both functions. Normally there is no virtual comport available as the

RP6Loader under Windows uses as a standard the D2XX drivers (you can change this

- please contact our support team!).

Check the Connection of the Device

To check if the device has been correctly installed you can use the device manager as an alternative to the RobotLoader under Windows XP, 2003 and

2000: Right click on My Computer --> Properties --> Hardware --> Device manager

- 30 -

OR alternatively: Start --> Settings --> Control panel --> Performance and

Maintenance --> System --> Hardware --> Device manager and check there in the tree view under “Connections (COM and LPT)” if you find a “USB-Serial

Port (COMX)” - the X replacing the port number, or look under “USB serial bus controller“ for a “USB Serial Converter“ !

If you wish to uninstall the driver some day

If ever you wish to uninstall the driver (no, not now - this is just a hint if you need this some day): If you have used the CD ROM installation program, you can uninstall it directly via Start --> Settings --> Control panel --> Software. In the displayed list you will find an item “FTDI USB Serial Converter Drivers“ – select it and click on “uninstall”.

If you have installed the driver manually, you can execute the program

““FTUNIN.exe” in the directory dedicated to the USB driver for your system!

Warning: USB-->RS232 adaptors with FTDI chip set often also use this driver!

- 31 -

7.3. Connection of the USB Interface – Linux

Windows users can skip this section!

Linux systems with kernel 2.4.20 or higher already include the required driver

(at least for the compatible previous model FT232BM of the chip on our USB interface, the FT232R). The hardware is automatically recognized and you have nothing else to do. In case of a problem, you can get Linux drivers (and support and maybe also newer drivers) directly from FTDI: http://www.ftdichip.com/

Once the hardware has been connected, you can check under Linux via: cat /proc/tty/driver/usbserial if the USB serial port has been correctly installed. This is normally all you have to do.

It is worth to mention that the Robot Loader uses under Windows D2XX drivers and the full USB designations appear in the port list (e.g. ”USB0 | Robot

USB Interface | serialNumber“). Whereas under Linux the virtual comport designations appear such as /dev/ttyUSB0, /dev/ttyUSB1 etc.. The normal com ports are equally displayed as “dev/ttyS0“ etc.. In this case you have to try which port is the correct one!

Unfortunately Linux doesn’t have such a convenient driver that does both.

Therefore it made more sense to use the Virtual Comport drivers that are included in the kernel anyway. The installation of a D2XX driver would require quite a lot of manual work....

Finalization of Software Installation

Now the installation of the software and the USB interfaces is completed! You just need to copy the most important files from the CD on a hard disk

(especially the complete “Documentation” folder and, if it hasn’t been done yet, the example programs). This avoids to look constantly for the CD if you need these files. The folders on the CD are all named in such a way that they can be easily allocated to the relevant software packages or documentation!

If you “loose” the CD one day, you can download the most important files as this manual, the RobotLoader and the example programs from the AREXX home page. You will find there also the links to the other software packages that you require.

- 32 -

7.4. Testing the USB Interface and starting the

RobotLoader

The next step is a test of the program upload via the USB interface. Connect the USB interface to the PC (always connect the PC first!) and the other end of the 10-pin ribbon cable to the “PROG/UART” connector on the Robot Arm.

(Robot Arm MUST BE SWITCHED OFF!) The 10-pin ribbon cable is mechanically protected against polarity inversion. As long as it is not forced, it can’t be connected the wrong way round.

Then start the RobotLoader. Depending on which language you have selected, the menus might have a bit different names. The screen shots show the English version. Via the menu item “Options->Preferences“ you can select under “Language /Sprache“ the required language (English or German) and then click on OK.

Once you have selected your language, you have to re-start the Robot Loader to validate the changes!

Open a port - Windows

Select the USB port. As long as no other

USB->Serial Adaptor with FTDI controller is connected to the PC, you will see only one single entry that you have to select.

If more ports exist, you can identify the port via the name “Robot USB Interface“ (or „FT232R USB UART“). Behind the port name the programmed serial number is displayed.

If no ports are displayed, you can refresh the port list via the menu item “Robot-

Loader-->Refresh Portlist“ !

WARNING!

If the voltage drops below < 4,4 V, a warning is displayed.

The maximum voltage that the RobotLoader can measure, is 5.1V!

- 33 -

7.5. Open a port – Linux

Linux handles the USB serial adaptor like a normal comport. The installation of the D2XX driver from FTDI would not be as simple as that under Linux and the normal virtual comport (VCP) drivers are included anyway in the current Linux kernels. It works almost the same as under Windows. You just need to find out the name of the Robot Arm USB interface and make sure that the USB port is not unplugged from the PC as long as the connection is open (otherwise you might have to re-start the RobotLoader to re-connect). Under Linux the names of the virtual comports are “/dev/ttyUSBx“, x being a number e.g. “/dev/ ttyUSB0“ or “/dev/ttyUSB1“. The names of the normal comports under Linux are “/dev/ttyS0“, „/dev/tty- S1“ etc.. They also show up in the port list as far as they exist.

The RobotLoader remembers - if there are several ports - which port you have used last time and selects this port automatically when you start the program

(in general, most of the settings and selections are maintained).

Now you can click on the button “Connect“! The RobotLoader will open the port and test if the communication with the bootloader on the robot is working.

The black field “Status” on the bottom should show the message

“Connected to: Robot Arm ...” or similiar together with an information about the currently measured voltage. If not, just try again! If it still doesn’t work, there is a mistake! Switch the robot off immediately and start searching for the error.

If the voltage is too low, a warning is displayed. You should immediately charge the accumulators (preferably even earlier when the voltage drops below 4.0V)!

WARNING!

If the voltage drops below < 4,4 V, a warning is displayed.

The maximum voltage that the RobotLoader is able to measure, is 5.1 V!

- 34 -

7.6. SELFTEST

The yellow voltage LED lights up when the Robot Arm is switched on.

The status LED goes off when a HEX file is uploaded. As soon as a program is started, the status LED lights up in red. In the robot status “Ready”, the same LED lights up in green.

If this worked, you can execute a small selftest program to test the functioning of all robot systems. Please click on the button “Add” on the bottom of the Robot Loader window and select the file RobotArmExamples [MINI],

„Example_11_Selftest\RobotArm_Selftest.hex“ in the example directory. This file contains the selftest program in hexadecimal format - that’s why this kind of program file is called “hex file”. The file just selected appears afterwards in the list. This way you can add other hex files from your own programs and from the examples programs (see screen shot where some hex files have already been added). The Robot Loader is able to manage several categories of hex files.

This allows to sort the files in a clear way e.g. if several programmable extension modules are mounted on the robot or different program versions are used. The list is automatically saved at the end of the program. Of course only the paths to the hex files are saved, not the hex files themselves. If you work on a program, you just need to add and select the hex file once. Then you can load the new program into the microcontroller after every re-compiling of the program. (you can also use the key combination [STRG+D] or [STRG+Y], to start the program directly after the transfer). The path names are of course totally different under the various operating systems. Nevertheless the RobotLoader suits both, Windows and Linux, without any changes, as there is a separate list for Windows and Linux.

Either you continue now with the other example programs (Examples) of the

Robot Arm or else you start with your own software programming.

WARNING!

If the voltage drops below < 4,4 V, a warning is displayed.

The maximum voltage that the RobotLoader is able to measure, is 5.1 V!

- 35 -

Please select the “RobotArm_Selftest.hex“ file in the list and click on the “Upload!“ button on the top right just below the progress bar.

The program will now be transferred into the MEGA64 processor on the Robot

Arm. This should not take more than a few seconds (max. 5 seconds for the selftest program).

Switch to the tab (at the bottom of the window!) “Terminal“! Alternatively you can also switch to terminal via the menu item “View”.

Now you can execute the selftest and the calibration of the Robot Arm. Press the switch Start/Stop Reset on the Robot Arm to start the program. Later you can do this alternatively via the RobotLoader menu --> Start or the key combination [STRG]+[S]. However this time you can test if the switch works properly!

If an error occurs in the selftest, switch the robot off immediately and start searching for the mistake.

IT IS RECOMMENDED TO START WITH THE CALIBRATION

OF THE ROBOT ARM! SEE PAGE 46.

- 36 -

7.7. Calibration

Start the calibration program to calibrate the robot.

To this end, please click on the button “Add” at the bottom of the RobotLoader window and select the file RobotArmExamples [MINI], „Example_11_Selftest\

RobotArm_Selftest.hex“ in the example directory.

This file contains the selftest program in hexadecimal format. The just selected file will appear subsequently in the list (see screenshot).

Select C

(C - Calibrate) in the calibration program to start calibration.

Bring position so that the Robot Arm looks

like

The 2-6 approximately in a central position and the finger (servo 1) is almost

closed.

Once the calibration (C - Calibrate) is completed, the robot can execute following selftest. The result of the calibration is saved in ATMEGA.

- 37 -

Calibration position

Servo 1

Finger

Servo 2

Rotate wrist

Servo 3

Bend wrist

Servo 4

Elbow

Servo 5

Shoulder

Servo 6

Base (azimuth)

- 38 -

7.8. Keyboard Test

The set is supplied with a keyboard that can be connected to the Robot Arm.

It is a good option for simple demonstrations and allows us to practice the control of a robot arm via a keyboard.

The keyboard is fitted with 6 control keys and 4 special keys for later extensions.

If we want to test the Robot Arm via the keyboard, we need to transfer the appropriate hex program into the robot’s microprocessor.

Please click on the button “Add” on the bottom of the RobotLoader window and select the file RobotArmExamples, “RobotArm_Key_Board.hex“ in the example directory.

Select the file „RobotArm_Key_Board.hex“ in the list and press subsequently the “Upload!“ button on the top right side below the progress bar.

Having done that, you can control the Robot Arm simply via the keys on the keyboard.

PCB

Keyboard

Keyboard lead

- 39 -

8.0. RACS Software

RACS (Robot Arm Control Software) is the easiest way to control and program the Robot Arm. Programming via the RACS method requires the RobotLoader software and the USB programming adaptor.

Prior to using the robot, you need to upload the HEX software RAC-PRO.hex into the Flash memory of the processor.

Connect the programming/control lead to the USB port on your computer and start the Loader software. Following user interface is displayed:

Fig. 1

If no USB port appears in the list “Step 1: Select a port”, make sure that the lead is connected and the programmer’s drivers are installed. You can recall the port list via the menu:

RobotLoader -> Refresh port list. Select the port and click on “Connect”.

Select the appropriate .hex file in step 2

– Click on “Add”:

RAC-PRO.HEX

- 40 -

In step 3 click on the button “Upload” to import the file.

If you want to operate the Robot Arm, you have to disconnect the

RobotLoader in Step 1 by clicking on the button “Close”. If you close the program, the connection is automatically interrupted.

Please make sure that there is no connection between the Loader software and the Robot Arm, otherwise the robot can’t be controlled via the RACS software.

7.1. RACS Instruction Manual

The Robot Arm can be controlled very easily via the RACS software. A link is established between the programming/control lead and then the motors of the

Robot Arm react to the slider positions set via the mouse. The current positions can be saved, changed and erased in the list box in the lower part of the user interface. This generates a list containing the individual positions that can be saved as a file on the computer by clicking on the button “Save”. This step list can be uploaded any time.

Important !!! The robot monitors the motor current of every individual servomotor. If the threshold of a servo is exceeded - e.g. during a collision or overload - the text in the RACS software starts flashing. In this case, the robot must be driven back to its last position as quickly as possible or the servopower in the RACS software must be disabled (disable the checkbox “servopower”).

Otherwise the Robot Arm might be definitely damaged!!!

- 41 -

7.2. RACS - Connection

1.

Double-click on the Robot Arm Control Software to start it, following interface is displayed:

Fig. 2

2.

In the dropdown menu are listed all serial interfaces

Fig. 3

3.

4.

Plug in the USB programmer

Click on Update button. When you look again that the dropdown menu, you will see an additional interface. This interface has been initialized by plugging in the USB programmer.

Attention: The name of the interface differs from one computer to the other!

- 42 -

5.

Select the new interface

Fig. 4

6.

Enable the checkbox “Connect”

7.

Enable the checkbox “servo power”

8.

Move the slider to control the servos.

If an error occured during the establishment of the connection, following window appears. The connections must be established again (repeat steps 2-6 and check the interface).

Fig. 7

- 43 -

7.3. RACS – Automated Position Control

Following controls are available in the window below:

Add:

this button adds the current slider position to the list

Replace:

the selected list item will be replaced by the current slider

positions

Insert:

the current slider positions will be inserted above the selected item

Clear:

Save:

Load:

Run:

the selected list item will be erased the list items will be saved in a file the list items are uploaded from a file

(Caution, the current list items will be erased!)

The list items are processed in sequence starting at the top.

If the “Repeat” option has been enabled, the Robot Arm will keep processing all items continuously.

Step Time:

The step time defines how long (in seconds) the robot will wait until it processes the next item in the list. If the list contains only very short travels, the selected time may be short. If, on the contrary, very long travels have been programmed e.g. full

180° servo motions, the selected time must be set longer as the robot will not reach its target position and will proceed prematurely to the next step item.

Pause:

Stop:

The process is paused

The process is stopped

- 44 -

8.0. Programming the Robot Arm

Now we are gradually coming to the programming of the robot.

Setting up the source text editor

First of all, we need to set up a little development environment. The so-called

“source text” (also called “sourcecode”) for our C program must be fed into our computer one way or the other!

To this end, we will definitely not use programs like OpenOffice or Word! As this might not be obvious for everybody, we stress it here explicitly. They are ideally suited to write manuals like this one, but they are totally inappropriate for programming purposes. Source text is pure text without any formatting.

The compiler is not interested in font size and colour...

For a human being, it is of course much clearer if some keywords or kinds of text are automatically highlighted by colours. These functions and some more are contained in Programmers Notepad 2 (abbeviated hereafter by “PN2”) that is the source text editor that we will use (ATTENTION: Under Linux you need to use another editor that offers about the same functions as PN2. Usually, several editors are pre-installed! (e.g. kate, gedit, exmacs or similiar)). In addition to the highlighting of keywords and others (called “syntax highlighting”) it offers also a rudimentary project management. This allows to organise several source text files in projects and to display in a list all files related to a project.

Moreover you can easily retrieve programs like the AVR-GCC in PN2 and get the programs conveniently compiled via a menu item. Normally the AVR-GCC is a pure command line program without graphic interface...

You will find more recent versions of Programmers Notepad on the project homepage:

http://www.pnotepad.org/

The newest versions of WINAVR don’t require the setting up of menu items anymore!

PLEASE NOTE:

In this section we don’t describe anymore how you have to set up menu items in PN2 as the newest WINAVR versions have done this already for you!

- 45 -

See on page 47 “Open and compile an example project” how you can open an example project!

If you have opened an example project, it should look a bit like this on the PN2 screen:

“Robot ArmExamples.ppg“ file.

This is a project group for PN2 that uploads all example programs plus the Robot Arm Library into the project list (“Projects“) .

On the left hand side are shown all example projects, on the right hand side the source text editor (with the mentioned syntax highlighting) and at the bottom the tools output (in this case the output of the compiler).

You can convert many other things in PN2 and it offers many useful features.

- 46 -

Open and compile an example project

Let’s test now if everything runs properly and open the example projects:

Select in the “File“ menu the item “Open

Project(s)“.

A normal file section dialogue appears.

Search the folder “Robot Arm_Examples

[MINI]\“ in the folder into which you have saved the example programs.

Open the “Robot ArmExamples.ppg“ file. This is a project group for PN2 that uploads all example programs as well as the Robot Arm Library into the project list

(“Projects“).

Now all example projects are conveniently at hand if you want to refer to them at the beginning or look for functions in the Robot Arm Library etc..

Open the first example program on top of the list (“01_Leds“ and select file

“01_Leds“) that appears on the left edge of the program window! Just doubleclick on “01_Leds.c“! A source text editor is displayed in a window inside the program.

An output area should appear on the bottom of the program window of PN2. If not, you have to enable this area via the “View” menu --> “Enable output” OR if the area is too small, increase the size by pulling the edges with the mouse

(the mouse cursor changes into a double arrow at the upper edge of the grey area marked “output” at the bottom of the program window...).

You can take a quick look at the program that you just opened with the source text editor but you don’t need to understand right now what is happening exactly. However as a first info: The green text are comments that are not part of the actual program. They are only used for description/documentation purposes.

- 47 -

We will explan this in detail a bit further down (there is also a version of this program WITHOUT comments so that you can see how short the program is in fact. The comments inflate it a lot but are necessary for the understanding.

The uncommented version is also useful to copy the code in your own programs!).

First of all we just want to test if the compilation of programs works properly.

In the Tools menu on top both freshly installed menu items (see fig.) should appear (or the [WinAVR] inputs existing as a standard in PN; whatever, it works normally with both).

Please click now on “MAKE ALL“!

PN2 retrieves now the above mentioned “make_all.bat“ batch file. This will on its turn retrieve the program “make“. More info about “make“ will follow later.

The example program will now be compiled. The generated hex file contains the program in the translated format for the microcontroller and can be uploaded and executed later. The compilation process generates a lot of temporary files (suffixes like “.o, .lss, .map, .sym, .elf, .dep“). Just ignore them. The newly set up tool “make clean” will erase them all. Only the hex file is of interest for us. By the way, the function “make clean” will not erase this file.

- 48 -

After the activation of the menu item MAKE ALL, following output should display (below in a considerably shortened version! Some lines may look of course a bit different):

> “make.exe” all

-------- begin -------avr-gcc (WinAVR 20100110) 4.3.3

Copyright (C) 2008 Free Software Foundation, Inc.

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Size before:

AVR Memory Usage

----------------

Device: atmega64

Program: 3074 bytes (4.7% Full)

(.text + .data + .bootloader)

Data: 68 bytes (1.7% Full)

(.data + .bss + .noinit)

EEPROM: 14 bytes (0.7% Full)

(.eeprom)

Compiling C: Robot Arm_Leds.c

avr-gcc -c -mmcu=atmega64 -I.

-gdwarf-2 -DF_CPU=16000000UL -Os -funsigned-char -funsigned-bitfields -fpackstruct -fshort-enums -Wall

-Wstrict-prototypes -Wa,-adhlns=./Robot Arm_Leds.lst -std=gnu99 -MMD -MP -MF

.dep/Robot Arm_Leds.o.d Robot Arm_Leds.c -o Caterpillar_Leds.o

Linking: Robot Arm_Leds.elf

avr-gcc -mmcu=atmega16 -I. -gdwarf-2 -DF_CPU=16000000UL -Os -funsigned-char -funsignedbitfields

Creating load file for Flash: Robot Arm_Leds.hex

Creating load file for EEPROM: Robot Arm_Leds.eep

avr-objcopy -j .eeprom --set-section-flags=.eeprom=”alloc,load” \

--change-section-lma .eeprom=0 --no-change-warnings -O ihex Robot Arm_

Leds.elf

Robot Arm_Leds.eep || exit 0

Size after:

AVR Memory Usage

----------------

Device: atmega64

Program: 3074 bytes (4.7% Full)

(.text + .data + .bootloader)

Data: 68 bytes (1.7% Full)

(.data + .bss + .noinit)

EEPROM: 14 bytes (0.7% Full)

(.eeprom)

-------- end -------->

Process Exit Code: 0

> Time Taken: 00:04

- 49 -

The “Process Exit Code: 0“ at the end is most important. It means that no error occurred during compilation. If another code appears there, the sourcecode contains an error that must be corrected before it will work. In this case, the compiler will output various error messages that give some more information.

Please note however that the “Process Exit Code: 0“ is not a guarantee of a fully error-free program! The compiler will not find flawed thinking in your program and it can’t prevent the robot from running into a wall ;-)

IMPORTANT: You might find warnings and other messages further above.

These are often very helpful and always indicate important problems! That’s why these always need to be solved. PN2 highlights warnings and errors by colours to make the identification easier. Even the line number is indicated that the compiler is criticizing. If you click on the coloured error message, PN2 skips in the relevant editor directly to the faulty line.

The indication at the end “AVR Memory Usage“ is also very useful.

----------------

Size after:

AVR Memory Usage

----------------

Device: atmega64

Program: 3074 bytes (4.7% Full)

(.text + .data + .bootloader)

Data: 68 bytes (1.7% Full)

(.data + .bss + .noinit)

This means for the Atmega64 processor that our program has a size of 3074 bytes and that 68 bytes of RAM are reserved for static variables (you have to add to this the dynamic ranges for heap and stack but this would go too far... just keep always at least a few hundred bytes of memory free). We dispose in total of 64kb (65536 bytes) of Flash ROM and 2kb (2028 bytes) of RAM. On the 64kb, 2k are occupied by the bootloader - so we can only use 62kb. Make always sure that the program fits into the available memory space!

(The RobotLoader doesn’t transfer the program if it is too big!)

- 50 -

-

This means that the example programs above leave 60414 bytes of free space. The relatively short example program Example_01_Leds.c is only so big because the Robot ArmBaseLibrary is included! So, don’t worry, there is enough space for your programs and so small programs usually don’t need so much memory space. The function library on its own needs several kb of Flash memory but makes your job much easier and therefore your own programs will generally be quite small compared to the Robot ArmBaseLibrary.

The just compiled program can now be uploaded via the RobotLoader into the robot. To do that, you have to add the newly generated hex file into the list in the RobotLoader via the button “Add”, select it and click on the “Upload” button exactly as you did for the selftest program. After that you can switch back to the terminal and look at the output of the program. Of course you need to launch the execution of the program. The easiest way to do it in the terminal is to press the key combination [STRG]+[S] on the keyboard or to use the menu (or just to send an “s” - after a reset you have to wait a little bit though until the message “[READY]” is displayed in the terminal!). The key combination [STRG]+ [Y] is also very convenient as the currently selected program is uploaded into the Robot Arm and immediately started. This avoids to click on the “Flash Loader” tab in the terminal or to use the menu.

The example program is very simple and is only composed of a small LED running light and some text output.

- 51 -

As a conclusion

We hope that our robots have guided you on your way into the world of robots.

We share the conviction of our Japanese friends that robots will become the next technological revolution after computers and mobile phones. This revolution will trigger new economical impulses.

Unfortunately Japan, other Far East countries and also the USA have largely overtaken Europe in this field. Unlike Europe, technical courses start in Far East already in the primary school and are an important part of the education.

Our target in the development of our robots ASURO,

YETI, Caterpillar and Robot Arm is therefore:

TO TRAIN A SCIENTIFIC MIND

- 52 -

APPENDIX

Modifications old PCB type RA1-PRO

Because of an stronger servo type the servo number 5 consumes more power now as we calculated during development. When we activate more servos at the same time there will be a very big servo current Aus trough the FET with a big voltagedrop (0,5 Volt). This voltage drop can be to high for a normal function of the robot arm (f.e. to litle power to lift the arm or a small weight) this all because the low voltage on the servo.

Solving the problem:

Please replace the 1 Ohm servo 5 resitor (R29) with the supplied 0.1 Ohm- resistor.

You also can remove and/or shortcut the FET (T1) with a wire to solve the big voltage drop.

After this modifications the robot arm servos will have again sufficient power for normal operation maximum lift weight is about 200 grams now for

RA1-PRO and about 150 grams for RA2-mini.

TIP:

When you replace R29 with the 0.1 Ohm resistor the current for Servo 5 also will be changed and shows incorrect values, you can simply modify this in your own C programs.

- 53 -

A. CIRCUIT DIAGRAM ROBOT ARM RA1-PRO

1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3

EYE_UP EYE_DN EYE_L EYE_R

Q1 PN

A B C

52

21

VCC

VCC

PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PG2 A B C ADC EYE_EN serv

SCL SDA RXD1 TX PD4 PD5 PD6 PD7

22p C10

X1 16M

GND

GND

22

53

R7 100k

T1 L5602S

C12 470u/

C11 220n

L2 10uH

C7 10n

C6 100n

PDI PDO

SS SCK M

R4 10k

C8 100n

- 54 -

B. CIRCUIT DIAGRAM POWER SUPPLY RA1-PRO

R2 100k R3 100k

C5 0.

C4 0.

D2 1N

5

B TA

ON/OFF

GND

3

6

C2 1000u/

R1 390

C16 0.

C15 0.

C14 0.

- 55 -

C. CIRCUIT DIAGRAM CONNECTORS RA1-PRO

PA6 PA7

PA0 PA1 PA2 PA3

1 2 3 4 5 6 7

PDI SCK RESET

RESET TX

- 56 -

D. CIRCUIT DIAGRAM KEYBOARD RA1-PRO

- 57 -

E. PCB ROBOT ARM RA1-PRO

- 58 -

F. NEW PCB ROBOT ARM RA1-PRO

1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3

EYE_UP EYE_DN EYE_L EYE_R

A B C

22p C10

52

21

VCC

VCC

PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PG2 A B C ADC EYE_EN serv SCL SDA RXD1 TX PD4 PD5 PD6 PD7

GND

GND

22

53

C12 470u/

C11 220n

Q1 PN

L2 10uH

C7 10n

C6 100n

PDI PDO

SS SCK M

R4 10k

C8 100n

- 59 -

G. NEW PCB ROBOT ARM RA1-PRO

C16 0.

C15 0.

C14 0.

R19 1k R20 47k

C4 0.

C21 100n

R17 47k

Q2 BC847

D2 1N

5

B TA

ON/OFF

GND

3

6

C2 1000u/

R2 100k R3 100k

C5 0.

R1 390

D1 1N

GND

2

C19 100N

- 60 -

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