AVR 40 Pin Rapid Robot controller board V2 User Manual Robokits

AVR 40 Pin Rapid Robot controller board V2 User Manual Robokits
AVR 40 Pin Rapid Robot
controller board V2
User Manual
Robokits India
http://www.robokits.org
[email protected]
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Thank you for purchasing the AVR 40 Pin Rapid Robot controller board V2.
This unit has been carefully engineered and tested to provide superior performance.
This document covers the features and operation of the AVR 40 Pin Rapid Robot
controller board V2.
This is an easy-to-use board using the popular Atmel ATMega16/32
microcontroller. The board includes everything you need to learn, develop or using for
a robotic application. It is ideal for any kind of autonomous or manual controlled robot.
Features
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Small Size : 97 x 79 mm
Can be easily power from an AC – DC source or Battery
On Board Regulator with filters and Operating voltage from 6V - 20 V
4 LED's selectable though individual jumpers
5 Switches including reset
3 Switches on interrupt pins
Power on/off toggle switch
Motor on/off toggle switch
16MHz crystal for maximum speed
AREF setting potentiometer
Onboard LCD connector compatible to HD44780 LCD Modules
LCD brightness control
Frosted Blue Power Indicator
Onboard space for two L298 motor Drivers
2A per channel output capacity
4 DC/2 Stepper motor driving capability
PWM pins connected to motor drivers for speed control of motors
Full Speed/PWM Speed control selection jumpers
4 ADC/Standard servo compatible connectors
All Pins accessible through male header with standard .1” header pins
Serial Programmer and PC-MCU serial link included
All required connectors included.
Programmer, Serial port and Power Supply are provided externally which helps
keeping the board size small.
Optional items
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LCD Module HD44780 compatible
AVR Microcontroller (Selectable among None, ATmega16 and ATMega32)
PC-MCU link (Selectable among none, serial and USB port)
AVR programmer (Selectable between none, serial, parallel and USB port)
Motor Drier L293D(Selectable between none, one or two)
This Product Includes
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AVR 40 pin Rapid Robot Controller Board V2
CD containing all required software's and sample codes in WINAVR
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Setting up the Board
Providing Power Supply
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You can provide the power supply to the board from any DC source from 6V to
20V.
The microcontroller is preprogrammed for Blinking LEDs, printing ROBOKITS
INDIA on the LCD and running all motors in one direction with motor1 and
motor2 changing its speed. Blinking LED’s will change the duration of blinking
by press of all four switches. This is the default program provided on CD in
folder named Default.
To provide the supply from AC adapter with red wire going to VDD terminal and
white wire going to GND terminal.
To power up the board using any DC source use VDD terminal as +VE terminal
and GND as –VE terminal.
Be careful while applying power otherwise the regulator IC will blow up.
To give supply other than power supply provided open the screws, insert the
supply wires and fasten them again.
Board Top Layout
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Board Information
Switches
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There are five small and two big switches on the board to facilitate user.
The toggle switch written with POWER on the top is to control power supply to
the board.
The toggle switch written with MOTOR on the top is to control power supply to
the motors.
The one written Reset at bottom is a Reset switch for microcontroller.
Switches INT2, SW1, INT0 and INT1 are connected with microcontroller pins
PB.2 (INT2), PD.1, PD.2 (INT0), PD.3 (INT1) respectively.
Three switches named INT0, INT1 and INT2 are connected to external interrupt
pins for general use.
These switches do not affect the operation of the pins they are connected with.
So, you can use this microcontroller I/O pins for other use also.
LED’s
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There are five LED’s on the board.
Blue LED at the right bottom corner is power indicator.
Rest four led’s named LED1, LED2, LED3 and LED4 are connected to PA.4,
PA.5, PA.6 and PA.7 respectively.
All LED’s are selectable through individual jumpers so that those pins can be
used for other external purpose.
Remove jumpers to use the Pin as normal I/O pin.
LCD Connector
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The 16 pin male header at left top is standard HD44780 LCD module compatible
connector.
Just fix any standard HD44780 LCD module to control it through AVR.
The connections to the microcontroller and LCD are as below.
RS – PB.0
RW – PB.1
EN – PB.3
D0 – PB.4
D1 – PB.5
D2 – PB.6
D3 – PB.7
Brightness control potentiometer is also provided to adjust brightness of LCD
module.
Remove LCD to use these pins as Normal I/O pins.
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Motor Drivers
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Motor driver is using L298 Integrated IC.
Two L298 motor drivers can control up to 4 DC motors or 2 stepper motors with
output 2A per channel.
Motor output connectors are at the right side of the board.
Two DC motors can also be controlled by PWM of AVR or at full speed by
PWM1 and PWM2 selection jumpers.
Put jumpers PWM1 and PWM2 in right side two pins to avoid speed control and
achieve maximum speed.
Put jumpers PWM1 and PWM2 in left side two pins for speed control through
OC1A (PD5) and OC1B (PD4).
If PWM is not used PD4 and PD5 can be used as normal I/O pins.
Motor1 can be controlled by PC0 and PC1. If speed control is activated by
PWM1 jumper then speed can be controlled by OC1A pin.
Motor2 can be controlled by PC2 and PC3. If speed control is activated by
PWM2 jumper then speed can be controlled by OC1B pin.
Motor3 can be controlled by PC4 and PC5.
Motor4 can be controlled by PC6 and PC7.
ISP (In System Programming) Connector
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6 pin male headers denoted by ISP on the board is used to program AVR.
The pins are connected to MOSI (PB5), MISO (PB6), SCK (PB7), RESET, VCC
and GND.
UART Connector
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4 Pin male header denoted by UART on the board.
Used for serial communication between MCU & PC or MUC & MCU of same or
different made.
The pins are connected to RXD (PD0), TXD (PD1), VCC and GND.
PORTA, PORTB, PORTD Connectors
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All 8 port pins are accessible through male header pins
PORTA connector has 8 pins connected to PA0..7
PORTB connector has 10 pins connected to PB0..7, VCC and GND
PORTD connector has 10 pins connected to PD0..7, VCC and GND
AREF Potentiometer
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For setting reference voltage for ADC at AREF pin of microcontroller.
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Connecting the Serial Link
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Connect the PC-MCU serial link to serial port.
Insert the female header in the board as shown in figure. (Keep black wire to
Regulator side)
You can communicate with microcontroller with PC software like Hyper
Terminal. Set appropriate baud rate and com port to setup the communication.
See sample code for more details.
Programming the Microcontroller
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To program the microcontroller use the provided serial programmer.
If any other programmer is selected please see help file of that programmer.
Inset the programmer port to serial port of your pc.
Inset the female header to the board as shown below. (Black wire at the Crystal
side)
You can use the programming software Pony Prog for programming. (Use
following Settings)
You can also directly program the microcontroller with WinAVR. Use tools >Program option. If you find the error make correction in provided make file.
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To quickly program you can use Robokits.bat provided on the CD. Copy your
compiled hex file and the bat file in a folder and rename the hex file as
Robokits.hex.
Run Robokits.bat to program the device through serial
programmer.
We suggest ponyprog to program the fuse bits. It can also be done by
AVRdude. See the AVRdude manual for more information.
If you are programming fuse bits thought AVRdude, you can use this link to
calculate fuse bits. http://palmavr.sourceforge.net/cgi-bin/fc.cgi
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Using sample codes
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Sample codes are provided in WinAVR.
WinAVR is free source GNU C compiler for AVR microcontroller series.
First install WinAVR from CD.
Open Programmers notepad which is IDE for WinAVR.
Open any Robokits.c file provided in the CD in folder sample programs.
Change related Makefile if using any different programmer or MCU (Need not to
be changed for normal bard with serial programmer).
Use Programmer documentation which you are using.
To compile use Tools – Make All
To program use Tools – Program
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Service and Support
Service and support for this product are available from Robokits India. The Robokits Web site
(http://www.robokits.org) maintains current contact information for all Robokits products.
Limitations and Warrantees
The AVR 40 Pin Rapid Robot Controller Board V2 is intended for personal experimental and
amusement use and in no case should be used where the health or safety of persons may
depend on its proper operation. Robokits provides no warrantee of suitability or performance
for any purpose for the product. Use of the product software and or hardware is with the
understanding that any outcome whatsoever is at the users own risk. Robokits sole guarantee
is that the software and hardware perform in compliance with this document at the time it was
shipped to the best of our ability given reasonable care in manufacture and testing. All
products are tested for their best performance before shipping, and no warranty or guarantee
is provided on any of them. Of course the support is available on all of them for no cost.
Disclaimer
Copyright © Robokits India, 2007
Neither the whole nor any part of the information contained in, or the product described in this
manual, may be adapted or reproduced in any material or electronic form without the prior
written consent of the copyright holder.
This product and its documentation are supplied on an as-is basis and no warranty as to their
suitability for any particular purpose is either made or implied.
This document provides preliminary information that may be subject to change without notice.
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