Elenco WMSK300 WEmake Sound Reversing Car Kit Instruction manual

WEmake
™
Learn to Solder Kit
Build a Robot Car
TOOLS FOR MAKERS
MODEL WMSK-300
Sound Reversing Car
Assembly and Instruction Manual
150 Carpenter Avenue
Wheeling, IL 60090 (847) 541-3800
email assistance: [email protected]
elenco.com
753018
WEmake™
Sound Reversing Car | Introduction
You will find it’s fun to learn electronics and mechanisms by building this Sound Reversing
Car. It is a simple voice control robot car by using microphones as its detector. It moves
forward normally unless the microphone receives a signal like a clap or physical contact.
The car will move forward when you switch on the unit, when the
microphone detects noise it will turn back and towards the left side for a few seconds then
keep forward moving again until the next signals are received by microphone.
WEmake™
Tools Included
Qty.
r1
r1
Power source required:
1.5V “AA”X2 batteries
( not included )
!
Description
25W Soldering Iron W/Stand
Side Cutters 4 1/2" long
Batteries:
• Insert batteries with correct polarity.
• Do not mix old and new batteries.
Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel-cadmium) batteries.
• Remove batteries when they are used up.
2
Part #
WMSI200
WMSC1
• Do not short circuit the battery terminals.
• Never throw batteries in a fire or attempt to open the outer casing.
• Batteries are harmful if swallowed, so keep away from small children.
WEmake™
Parts List
If any parts are missing or damaged, please contact ELENCO ® (address/phone/e-mail is at the front of this manual)
for additional assistance, if needed. DO NOT contact your place of purchase as they will not be able to help you.
RESISTORS
Qty.
Symbol
r2
R10,R11
r2
R8, R9
r1
R1
r1
R2
r2
R5, R12
r1
R6
r1
R4
r1
R13
r1
R7
r1
R3
r1
VR
Description
Color Code
15Ω 5% 1/4W
brown-green-black-gold
220Ω 5% 1/4W
red-red-brown-gold
1kΩ 5% 1/4W
brown-black-red-gold
2.2kΩ 5% 1/4W
red-red-red-gold
3.3kΩ 5% 1/4W
orange-orange-red-gold
22kΩ 5% 1/4W
red-red-orange-gold
47kΩ 5% 1/4W
yellow-violet-orange-gold
100kΩ 5% 1/4W
brown-black-yellow-gold
1MΩ 5% 1/4W
brown-black-green-gold
2.7MΩ 5% 1/4W
red-violet-green-gold
100kΩ (104) Variable resistor
Part #
121500
132200
141000
142200
143300
152200
154700
161000
171000
172700
191604
CAPACITORS
Qty.
Symbol
r1
C1 0.022μF (223)
r1
C3 1μF
r1
C2 47μF
Description
Discap
Electrolytic
Electrolytic
Part #
242217
261047
274744
SEMICONDUCTORS
Qty.
Symbol
r5
TR1,TR2,TR5,TR6,TR9
r2
TR4, TR8
r2
TR3, TR7
Description
C945 or 1815
Transistor NPN
8050
Transistor NPN
8550
Transistor PNP
Part #
320945
328050
328550
MISCELLANEOUS (REFER P.4 FOR PARTS ID CHART)
Qty.
r1
r1
r1
r1
r1
r1
r1
r1
r1
r2
r2
r1
r1
r2
r1
r1
r2
r1
Description
Gear Box
Motor
Metal Shaft 2x40mm
Metal Shaft 3x90mm
Pinion Gear 10T
Face Gear 36T/14T White
Gear 36T/0T White
Gear 36T/14T Red
Gear 36T/14T Green
Nylon Pad (5.6x4.8x1.95mm)
Rubber Ring (30x3mm)
Rubber Ring (15x2.5mm)
Front Wheel (20mm)
Rear Wheel (32mm)
Spring
Front Wheel Bracket
Nylon Nut
Round Post (3x2mm)
Part #
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
Qty.
r2
r2
r4
r6
r3
r1
r4
r4
r3
r1
r1
r4
r1
r1
r1
r1
r1
r1
Description
Washer (2.6x6x0.5mm)
Washer (3.2x10x0.5mm)
Screw (M2x10mm)
Screw (M3x5mm)
Screw (M3x18mm)
Screw (M3x20mm)
Nut M2
Nut M3
Hex Post (M3x10mm)
Round Post (Ø3x6mm)
Battery Holder
1.3mm Pin
Wire Yellow
Wire Green
Slide Switch
Microphone
PC Board
Base
Part #
P19
P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
P33
P34
P35
P36
PARTS IDENTIFICATION
Resistors
5% 1/4W
Capacitors
Variable
Semiconductors
Electrolytic
3
Discap
Transistor
WEmake™
Gear box
No: P1
Parts Identification
Motor
1 PC
No: P2
1 PC
Metal shaft (2x40mm)
Metal shaft (3x90mm)
Pinion gear 10T
No: P3
No: P4
No: P5
1 PC
Face Gear 36T/14T White
Gear 36T/0T White
Gear 36T/14T Red
No: P6
No: P7
No: P8
1 PC
1 PC
1 PC
1 PC
Gear 36T/14T Green
Nylon pad(5.64 x 4.8 x 1.95)
No: P9
No: P9
1 PC
Rubber ring (Ø30 x 3mm)
Rubber ring (Ø15 x 2.5mm)
Front wheel (Ø20mm)
Rear wheel (Ø32mm)
Spring
No: P11
No: P12
No: P13
No: P14
No: P15
2 PC
Front wheel bracket
Nylon nut
No: P16
No: P17
1 PC
Screw (M2 X 10mm)
Screw (M3 x 5mm)
No: P21
No: P22
4 PC
M3 Nut
No: P26
4 PC
1 PC
2 PC
6 PC
1 PC
2 PC
2 PC
1 PC
Round post (Ø3 x 2mm)
Washer (2.6 x 6 X 0.5mm)
Washer (3.2 x 10 X 0.5mm)
No: P18
No: P19
No: P20
1 PC
Screw (M3 x 18mm)
Screw (3 x 20mm)
No: P23
No: P4
3 PC
2 PCS
No: P25
Round Post (Ø3 x 6mm)
Battery holder w/ 8cm wires Pin 1.3mm
No: P27
No: P28
No: P29
1 PC
2 PCS
M2 Nut
1 PC
Hex Post (M3 x 10mm)
3 PC
1 PC
1 PC
No: P30
4 PC
4 PC
Connector with wire 15cm
No: P31 Yellow 1PC
No: P32 Green 1 PC
Microphone
Slide Switch
No: P33
1 PC
No: P34
1 PC
4
Printed circuit board
Base
No: P35
No: P36
1 PC
1 PC
WEmake™
Identifying Resistors and Capacitors
IDENTIFYING RESISTOR VALUES
Use the following information as a guide in properly identifying the value of resistors.
BAND 1
1st Digit
Color
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Digit
0
1
2
3
4
5
6
7
8
9
BAND 2
2nd Digit
Color
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Digit
0
1
2
3
4
5
6
7
8
9
Multiplier
Color
Black
Brown
Red
Orange
Yellow
Green
Blue
Silver
Gold
Resistance
Tolerance
Multiplier
1
10
100
1,000
10,000
100,000
1,000,000
0.01
0.1
Color
Silver
Gold
Brown
Red
Orange
Green
Blue
Violet
BANDS
Tolerance
±10%
±5%
±1%
±2%
±3%
±0.5%
±0.25%
±0.1%
1
2
Multiplier
Tolerance
IDENTIFYING CAPACITORS VALUES
Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or mF (microfarads). Most
capacitors will have their actual value printed on them. Some capacitors may have their value printed in the following
manner. The maximum operating voltage may also be printed on the capacitor.
IDENTIFYING RESISTOR VALUES
Use the following information as a guide in properly identifying the value of resistors.
Electrolytic capacitors have a positive and
a negative electrode. The negative lead is
indicated on the packaging by a stripe with
minus signs and possibly arrowheads. Also,
the negative lead of a radial electrolytic is
shorter than the positive one.
Multiplier
2
3
Multiply By
1
10
100
1k
.
4
5
Multiplier
103K
100V
Tolerance*
The value is 10 x 1,000 =
10,000pF or .01μF, 10%, 100V
Polarity
marking
*The letter M indicates a tolerance of +20%
The letter K indicates a tolerance of +10%
The letter J indicates a tolerance of +5%
(+)
Radial
Note: The letter “R”
may be used at times
to signify a decimal
point; as in 3R3 = 3.3
METRIC UNITS AND CONVERSION
IDENTIFYING RESISTOR VALUES
Use the following information as a guide in properly identifying the value of resistors.
Abbreviation
p
n
μ
m
–
k
M
8
10k 100k .01
Maximum Working Voltage
(–)
(–)
1
First Digit
.
Axial
0
Second Digit
Warning:
If the capacitor is
connected with
incorrect polarity,
it may heat up and
either leak, or cause
the capacitor to
explode.
(+)
For the No.
Means
Pico
nano
micro
milli
unit
kilo
mega
Multiply Unit By
.000000000001
.000000001
.000001
.001
1
1,000
1,000,000
Or
10-12
10-9
10-6
10-3
100
103
106
5
1. 1,000 pico units
= 1 nano unit
2. 1,000 nano units
= 1 micro unit
3. 1,000 micro units = 1 milli unit
4. 1,000 milli units
= 1 unit
5. 1,000 units
= 1 kilo unit
6. 1,000 kilo units
= 1 mega unit
9
0.1
WEmake™
Introduction | Solder
Almost every electronic device today has a printed circuit
board. Whether you are assembling a PC board or repairing it,
you must understand the basics of working with these boards.
When using lead-free solders it is very important that tips
are properly maintained, otherwise tip life will be reduced
significantly. Tips should be cleaned frequently to remove
oxidation before it becomes impossible to remove. The tips
should always be tinned when not being used, otherwise
oxidation will quickly form on the tip. The iron should be turned
off if not used for extended periods of time.
Good soldering requires practice and an understanding of
soldering principles. This solder practice project will help
you achieve good soldering techniques, help you to become
familiar with a variety of electronic components, and provide
you with dynamic results. If the circuit has been assembled
and soldered properly, two LEDs will alternately flash, and the
speaker will produce a wailing sound.
Solder
Safety Precautions
Rosin core
Like all electrical devices, the solder station must be
handled with care. The soldering iron and tip can reach high
temperatures and these simple safety rules should be followed.
Figure 1
Flux
● Keep children out of reach of the soldering station.
Most solder contains flux in the hollow core of the solder allowing
it to be applied automatically when you heat the solder. The flux
will remove any oxide film on the metals soldered creating a good
metal-to-metal contact. This is called “wetting the metal”. There
are three types of solder fluxes: chloride, organic and rosin. In
the electronics industry, only the rosin type is used. Rosin flux
comes in two types, pure and active. The most reliable is the
pure type, since it doesn’t cause dendrites between tracks on the
PC board as the active type does. Due to the highly corrosive
and moisture attracting characteristics of the chloride and
organic type fluxes, they should not be used in electronics.
● To protect your eyes, use safety goggles during all phases
of construction.
● Keep flammable material away from the soldering iron.
● DO NOT cool iron by dipping it into any liquid or water.
● Always assume that the tip is hot to avoid burns.
● Work in an area that is well ventilated.
Surface Preparation
● Be careful that the hot soldering iron tip or the barrel of
the iron does not come in contact with any electrical cord.
In order for the solder to adhere to the connection, the metals
must be clean and free of nonmetallic materials. Flux in the
solder can remove oxides from metal but not other materials like
dirt or grease. To remove these, use a small steel brush or fine
emery cloth.
● Do not hold solder in your mouth. Wash your hands
thoroughly after handling solder.
Mechanical Connection
● Locate soldering iron in an area where you do not have to
go around it or reach over it.
When all the surfaces are clean, the metals should have a solid
mechanical connection. Wires should be tightly wrapped around
each other or to the terminal. This will eliminate large gaps
that create weak solder joints. Solder should not be used as a
mechanical connection.
Solder
Solder is a fusible metal, ideal for forming a metallic joint
between two metals. Lead solder is composed of tin and lead,
identified by the ratio of tin-to-lead. The most common ratios
are 63/37, 60/40, the first number indicates the amount of tin,
and the second is lead. It has a melting temperature around
360˚ to 370˚.
Terminal
Solder
Wire
For health reasons, lead-free solder is widely used and
included in this kit. Lead-free solders contain high percentages
of tin, almost always over 94%. The lead-free solder in this kit
contains 99.3% tin, 0.5% copper, and has a rosin-flux core.
The melting point of lead-free solder is about 40˚F higher than
leaded solder.
Tin is a corrosive and active metal and when it mixes with iron
(the protective layer on the tip), an inter-metallic compound
is formed that wears away more quickly than the iron would
either by itself or when used with leaded solder.
Figure 2
6
WEmake™
Solder: Tips and Maintenance
Types of Soldering Devices
A number of different types of soldering devices: irons,
guns and stations are available today. Irons are used
for light to medium work and guns are for medium to
heavy-duty work. The station type can range from light
to heavy-duty For working on PC boards, irons ranging
from 15 to 40 watts are suitable, or a station with a
range of 15 to 40 watts. If you use an iron with a higher
wattage rating than 40 watt, you may damage the copper
tracks on the PC board. The higher wattage irons are
best suited for heavy-duty electrical jobs.
Soldering iron
Soldering gun
Never use a file or abrasive material to clean the tip.
Using such methods will damage the plating and ruin the
tip. Do not remove the excess solder from the tip before
storing. The excess solder will prevent oxidation.
Clean Connections
Proper solder adhesion requires that the metal surface
to be free of dirt and grease. The flux only removes the
oxides so a brush or rag can be used to clean metal. There
are contact cleaners in aerosol cans and other solvents
available.
Desoldering
Great care should be taken when repairing or correcting a
mistake on a PC board. The metal foil can be easily pulled
up or broken from excessive heat. Use the least amount
of heat as possible. You can use a desoldering tool, bulb,
wick or a station. These tools will remove the solder
enabling you to correct the problem..
When using lead-free solders it is very important that tips
are properly maintained, otherwise tip life will be reduced
significantly. Tips should be cleaned frequently to remove
oxidation before it becomes impossible to remove. The tips
should always be tinned when not being used, otherwise
oxidation will quickly form on the tip. The iron should be
turned off if not used for extended periods of time.
Soldering station
Solder Tips
The tip is the very important part of the iron. The
material that the tip is made from is an essential factor.
The soldering iron tip contains four different metals as
shown in Figure 3. The core consists of copper because
of its high thermal conductivity. Since the copper is a
soft material, it is plated with iron to maintain the shape.
Chrome plating is used on the area where no soldering
takes place to prevent oxidation. Then the tip is plated
with tin, because it can be easily cleaned.
Tin plating
Chrome plating Iron plating
Figure 3
Copper
Today, tips are manufactured in a variety of different
shapes (see figure below). The chisel shape is one of
the most common. Having a choice of tip styles allows
you to choose the one best suited for your soldering
needs. Due to the high heat, removable tips can bond
themselves to the heating element if left in place for
extended periods of time. Periodic removal of the tip is
therefore advisable.
Desoldering station
1/32”
1/64”
1/16”
1/8”
3/64”
Tip Cleaning
A good clean solder tip makes soldering much easier.
The tip should be tinned by lightly coating it with solder
to prevent it from oxidizing. The tip can become pitted
(black spots) from normal use. It is important to clean
the tip by wiping it with a wet sponge or rag. For tips that
need a good cleaning, the tip tinner and cleaner (#TTC1)
should be used.
Solder wick
Bulb
Desoldering pump
7
WEmake™
Theory of Operation
of TR6 is high and the collector low so the motor drives
The kit is a simple sound controlled car which uses
a microphone as its detector. The car moves forward
forwards. Transistors TR4 and TR7 are on and TR3 and
detects noise like clap or physical contact, it turns back
the motor through TR7 and the negative side through
when the switch is first turned on. When the microphone
TR8 off. The positive side of the battery connected to
to the left for few seconds then moves forward again until
TR4.
the next signal is received by microphone.
When the microphone detects sound the base voltage
When the switch is turned on transistors TR1 and TR6
of TR1 goes low turning the transistor off. Capacitor
emitter you will turn the transistor on and allow a current
turns TR6 off. The base of TR6 now goes low and
on or off controls direction the car moves. In the forward
and TR3 and TR8 on This reverses the voltage on the
direction TR5 is on and TR9 is off. The base voltage
C3 voltage drops below .7 volts TR6 turns on again and
detection section. When the switch is turned on the base
adjust the sound sensitivity.
are on and TR2 off. When you apply 0.7V from base to
C3 then discharges through TR2 turning it on which
to flow from collector to emitter. Turning TR5 and TR9
the collector high turning transistors TR4 and TR7 off
direction TR5 is off and TR9 is on. In the backwards
motor so it car drives backwards. When the capacitor
of transistors TR5 and TR9 are controlled by the sound
the car drives forward. The potentiometer VR is used to
WEmake™
Schematic Diagram
R9
R2
2.2K
VR
100K
R1
1K
MIC
R3
2.7M
R4
47K
R7
C3
1M
1μF
C1
R6
22K
0.022μF
TR1
C945
TR2
C945
R5
3.3K
R12
3.3K
220Ω
TR3
8550
R13
100K
TR9
C945
TR5
C945
TR7
8550
BATTERY
3V
C2
47μF
TR6
C945
TR4
8050
R8
R10
R11
15Ω
15Ω
M1
MOTOR
220Ω
8
TR8
8050
S1
SLIDE
SWITCH
WEmake™
Resistor Reading Exercise
Before starting assembly of your project, you should be thoroughly familiar with the 4-band color code system. Many of
the resistor values will be identified by color bands and it is easy to mistake their value if you read the colors incorrectly
or read the value from the wrong end. Do the following exercise in resistor values. Place your answer in the box beneath
the resistor. Answers are on the bottom of this page.
(1) brown-green-red-gold
(2) brown-black-orange-gold
(3) brown-black-yellow-gold
(4) red-red-orange-gold
(5) yellow-violet-brown-gold
(6) blue-gray-orange-gold
(7) yellow-violet-black-gold
(8) brown-blue-brown-gold
(9) orange-orange-red-gold
(10) green-brown-red-gold
(11) brown-black-green-gold
(12) brown-gray-orange-gold
Answers to Resistor Reading Exercise: 1) 1.5kW+5%; 2) 10kW+5%; 3) 100kW+5%; 4) 22kW+5%; 5) 470W+5%; 6) 68kW+5%;
7) 47W+5%; 8) 160W+5%; 9) 3.3kW+5%; 10) 5.1kW+5%; 11) 1MW+5%; 12) 18kW+5%
9
WEmake™
Construction
Introduction
The most important factor in assembling your WMSK-300 Kit is good soldering techniques. Using the proper soldering
iron is of prime importance. A small pencil type soldering iron of 25 watts is recommended. The tip of the iron must be
kept clean at all times and well-tinned.
Solder
For many years leaded solder was the most common type
of solder used by the electronics industry, but it is now being
replaced by lead-free solder for health reasons. This kit
contains lead-free solder, which contains 99.3% tin, 0.7%
copper, and has a rosin-flux core.
Lead-free solder is different from lead solder: It has a higher
melting point than lead solder, so you need higher temperature
for the solder to flow properly. Recommended tip temperature is
approximately 700˚F; higher temperatures improve solder flow
but accelerate tip decay. An increase in soldering time may be
required to achieve good results. Soldering iron tips wear out
faster since lead-free solders are more corrosive and the higher
soldering temperatures accelerate corrosion, so proper tip care
is important. The solder joint finish will look slightly duller with
lead-free solders.
Use these procedures to increase the life of your soldering iron tip
when using lead-free solder:
● Keep the iron tinned at all times.
● Use the correct tip size for best heat transfer. The conical tip is
the most commonly used.
● Turn off iron when not in use or reduce temperature setting when
using a soldering station.
● Tips should be cleaned frequently to remove oxidation before it becomes impossible to remove. Use Dry Tip Cleaner (Elenco®
#SH-1025) or Tip Cleaner (Elenco® #TTC1). If you use a sponge
to clean your tip, then use distilled water (tap water has impurities
that accelerate corrosion).
Safety Procedures
● Always wear safety glasses or safety goggles to protect your
eyes when working with tools or soldering iron, and during all
phases of testing.
● Be sure there is adequate ventilation when soldering.
● Locate soldering iron in an area where you do not have to go
around it or reach over it. Keep it in a safe area away from the reach of children.
● Do not hold solder in your mouth. Solder is a toxic substance.
Wash hands thoroughly after handling solder.
Assemble Components
In all of the following assembly steps, the components must
be installed on the top side of the PC board unless otherwise
indicated. The top legend shows where each component goes.
The leads pass through the corresponding holes in the board and
are soldered on the foil side. Use only rosin core solder.
DO NOT USE ACID CORE SOLDER!
Types of Poor Soldering Connections
What Good Soldering Looks Like
A good solder connection should be bright, shiny, smooth, and
uniformly flowed over all surfaces.
1. Solder all components from the
copper foil side only. Push the
soldering iron tip against both the
lead and the circuit board foil.
Soldering Iron
1. Insufficient heat - the solder will
not flow onto the lead as shown.
Component Lead
Foil
Soldering iron positioned
incorrectly.
Circuit Board
2. Apply a small amount of solder
to the iron tip. This allows the
heat to leave the iron and onto
the foil. Immediately apply solder to the opposite side of the
connection, away from the iron.
Allow the heated component and
the circuit foil to melt the solder.
3. Allow the solder to flow around the
connection. Then, remove the
solder and the iron and let the
connection cool. The solder should
have flowed smoothly and not
lump around the wire lead.
Rosin
2. Insufficient solder - let the solder
flow over the connection until it is
covered. Use just enough solder to
cover the connection.
Soldering Iron
Solder
Foil
Solder
Component Lead
Solder
3. Excessive solder - could make connections that you did not intend
to between adjacent foil areas or
terminals.
Soldering Iron
Foil
4. Solder bridges - occur when solder
runs between circuit paths and
creates a short circuit. This is usually caused by using too much
solder. To correct this, simply drag
your soldering iron across the solder
bridge as shown.
4. Here is what a good solder
connection looks like.
10
Gap
Solder
Soldering Iron
Foil
Drag
WEmake™
PC Board Assembly
NOTE: Before beginning assembly, please refer to page 6 for the resistor reading exercise. This will familiarize you with the resistor color band coding.
Solder the following parts to the PC board.
¢ R6 - 22kΩ 5% ¼W Resistor
(red-red-orange-gold)
(see Figure C)
¢ R3 - 2.7MΩ 5% ¼W Resistor
(red-violet-green-gold)
(see Figure C)
¢ R4 - 47kΩ 5% ¼W Resistor
(yellow-violet-orange-gold)
¢ R2 - 2.2kΩ 5% ¼W Resistor
(red-red-red-gold)
(see Figure C)
¢ R9 - 220Ω 5% ¼W Resistor
(red-red-brown-gold)
(see Figure C)
¢ R1 - 1kΩ 5% ¼W Resistor
(brown-black-red-gold)
(see Figure C)
¢ R10 - 15Ω 5% ¼W Resistor
(brown-green-black-gold)
(see Figure C)
¢ R8 - 220Ω 5% ¼W Resistor
(red-red-brown-gold)
(see Figure C)
¢ R11 - 15Ω 5% ¼W Resistor
(brown-green-black-gold)
(see Figure C)
(see Figure C)
¢ R5 - 3.3kΩ 5% ¼W Resistor
(orange-orange-red-gold)
(see Figure C)
¢ R7 -1MΩ 5% ¼W Resistor
(brown-black-green-gold)
(see Figure C)
¢ R12 -3.3kΩ 5% ¼W Resistor
(orange-orange-red-gold)
(see Figure C)
¢ TR5 - C945 Transistor NPN
(see Figure F)
¢ TR3 - 8550 Transistor PNP
¢ TR7 - 8550 Transistor PNP
(see Figure F)
¢ C1 0.022μF (223) Discap
¢ MIC - Microphone
(see Figure A)
¢ VR -100kΩ Variable Resistor
(see Figure E)
¢ TR4 - 8050 Transistor NPN
¢ TR8 - 8050 Transistor NPN
(see Figure F)
¢ C2 47μF Electrolytic
(see Figure B)
¢ C3 1μF Electrolytic
(see Figure B)
¢ TR9 - C945 Transistor NPN
(see Figure F)
¢ TR2 - C945 Transistor NPN
¢ TR1 - C945 Transistor NPN
¢ TR6 - C945 Transistor NPN
(see Figure F)
Figure A
Mount the
microphone with
the leads in the
correct holes on the
PC board.
(–)
Warning:
If the capacitor
is connected
with incorrect
polarity, it may
heat up and
(-)
either leak
or cause the
capacitor to
explode.
¢ Slide Switch
(+)
Figure B
Be sure that the negative
(short) lead is in the correct
hole on the PC board.
Polarity
marking
¢ + 1.3mm Pin
¢ M– 1.3mm Pin
¢ M+ 1.3mm Pin
¢ – 1.3mm Pin
(see Figure D)
Figure C
Mount the resistor
flat against the
PC board as
shown.
Figure D
Mount the pin
flat against the
PC board as
shown.
(+)
Figure E
Mount the VR
flat against the
PC board as
shown.
Figure F
Mount the transistor with the
flat side in the same direction
as marked on the PC board.
Leave about 1/8” of space
between the transistor and
the PC board as shown below.
Solder and cut off the excess
leads.
flat
1/8”
11
WEmake™
Gear Box Assembly
P8
P1
P7
P32
P2
P4
P6
P5
P31
•
P9
Note: The positive end (+) marked with " "
P3
positive of motor
P10X2
Yellow wire
Note: The protrudent edge should be toward the metal case
WEmake™
Gear Box Assembly
12
negative of motor
Green wire
WEmake™
Gear Box & Rear Wheels Assembly
P25X2
P14X2
P36
P11X2
P21X2
WEmake™
Front Wheel Bracket Assembly
P23X3
P17
P16
P20X2
P28
P26X3
13
WEmake™
PCB & Battery Holder Assembly
P22X3
P21X2
P27X3
P19X2
P22X2
P25X2
WEmake™
Front Wheel Assembly
P24
P13
P26
P15
P18
P17
14
P12
WEmake™
Wiring
A
C
B
D
A
M–
Green
WEmake™
B
M+
Yellow
C
+
Red
Finished Assembly
15
D
–
Black
WEmake™
Operation | How It Works
After completing the assembly of the kit, double back to see that the soldering looks good and all of the
components are in their proper place.
High
Sensitivity
1. Switch the unit to "ON" position
2. Put it on to ground and see if it goes forward smoothly.
3. Clap your hand and see if it turns back and left side,
then go forward again.
4. Adjust "VR" to change microphone's sensitivity.
"VR"
Low
Sensitivity
NOTE: Refer to the Troubleshooting Section if your circuit
does not work.
WEmake™
Troubleshooting
1. One of the most frequently occurring problems is poor solder connections.
a) Tug slightly on all parts to make sure that they are indeed soldered.
b) All solder connections should be shiny. Resolder any that are not.
c) Solder should flow into a smooth puddle rather than a round ball.
Resolder any connection that has formed into a ball.
d) Have any solder bridges formed?
A solder bridge may occur if you accidentally touch an adjacent foil by using too much solder or by dragging the
soldering iron across adjacent foils. Break the bridge with your soldering iron.
2. Use a fresh AA batteries
3. Make sure that all of the components on PCB placed in their correct positions.
Check the polarity of electrolytics, transistors and microphone.
4. Check all the wiring connections are the same as wiring diagram.
5. If noise from the gearbox interferes with the microphone to receive signal, place a small amount of grease between
face gear (P6) and 2mm shaft (P3) will reduce the noise.
6. If the car keeps going left, tighten the nut (P17) on front wheel (P13) until it goes straight.
Note: DO NOT to put any grease between 3mm shaft (P4) and gears (P7 & P8).
16
WEmake™
Word Glossary
Capacitor
An electrical component that Resistor
can store electrical pressure (voltage) for periods of time.
Cold Solder Joint
Occurs because insufficient heat was applied or the connection was moved before the solder had set.
Connection looks crystalline,
crumbly, or dull.
Flux
A substance that is used to
cleanse the surface of
oxide before it is soldered. Always used in electronics
work. Most of the solder used in
electronics has flux built right into it.
Heat Sinking
A process of keeping the component from becoming
overheated during soldering.
Any metal object that can be
clamped to the component lead
will work as an effective heat
sink. An alligator clip or pliers
work well.
Integrated Circuit (IC)
PNP
A type of circuit in which Solder Wick
transistors, diodes, resistors,
and capacitors are all
constructed on a semiconductor base.
Soldering
A device which converts soundwaves into electrical energy.
Switch
Negative-Positive-Negative,
a type of transistor construction. The unit of measure for Tack Soldering
resistance.
Most metals, when exposed to
air, form an oxide on their Tinning the Tip
surface which prevents solder
from adhering to the metal.
Positive -Negative - Positive,
a type of transistor construction. Polarity
The division of two opposing
forces or properties.
Printed Circuit Board
A board used for mounting electrical components.
Components are connected
using metal traces “printed” on
the board instead of wires.
Microphone
NPN
Ohm, (Ω)
Oxidation
Component used to control the
flow of electricity in a circuit.
It is made of carbon.
Rosin Core Solder
The most common type of
solder used in electronics
generally referred to as 63/37
rosin core solder
Schematic
A drawing of an electrical circuit
that uses symbols for all the components.
Solder
A tin/copper alloy that melts
at a very low temperature,
used to join other metals
together. It produces excellent
electrical connections.
Solder Bridge
An unwanted solder connection
between two points that are
close together.
Solder Melting Point
The temperature at which a tin/
copper alloy (solder) melts.
The common solder used in
electronics (63% tin / 37% lead)
has a melting point of 370OF.
Braided wire coated with flux to
effectively remove solder from a
connection.
The process of joining two or
more metals by applying solder
to them.
A device to connect
(“closed” or “on”) or disconnect (“open” or “off”) wires in an
electric circuit.
A connection where the lead or
wire does not have any
mechanical support.
A process of coating the
soldering iron tip with solder to
minimize the formation of oxide
on the tip, which would reduce
the amount of heat transfer.
Transistor
An electronic device that uses
a small amount of current to
control a large amount of current.
Wire Gauge
Refers to the size of the wire. The
bigger the number, the smaller the
diameter of the wire. 18 gauge to 24
gauge is generally used for hook-up
in electronics.
17
WEmake™
Quiz
1.
Which component detects sound in
the circuit?
£ A. Resistor
£ B. Transistor
£ C. Microphone
£ D. Capacitor
2.
What type of flux should be used in
electronics?
£ A. Chloride
£ B. Organic
£ C. Rosin
£ D. Corrosive
3.
When working on PC boards, what wattage
range of iron is ideal?
£ A. 15-40 watts
£ B. 50-100 watts
£ C. 1-10 watts
£ D. 100-200 watts
4.
Tinning the soldering tip will prevent it from . .
£ A. heating.
£ B. melting.
£ C. soldering.
£ D. oxidizing.
5.
Proper solder adhesion requires that the
metal surface to be . . .
£ A. solder free.
£ B. clean.
£ C. greasy.
£ D. cold.
6.
Solder wick is used to . . .
£ A. remove solder.
£ B. solder in small parts.
£ C. cleaning the soldering iron tip.
£ D. removing flux.
7.
A cold solder joint is caused by . . .
£ A. a solder bridge.
£ B. using 60/40 solder.
£ C. insufficient heat.
£ D. acid core solder.
8.
When two adjacent foils accidentally
touch, it is called . . .
£ A. a jumper.
£ B. a blob.
£ C. a solder hole.
£ D. a solder bridge.
9.
What ratio has the greatest amount
of tin?
£ A. 20/80
£ B. 40/60
£ C. 50/50
£ D. 60/40
10.
The variable resistor is used to
adjust the . . .
£ A. forward speed.
£ B. sound sensitivity.
£ C. battery voltage.
£ D. reverse speed.
ANSWERS: 1. C, 2. C, 3. A, 4. D, 5. B, 6. A, 7. C, 8. D, 9. D, 10. B.
Experience Other WEmake™ Kits
WEmake™
Two IC FM Radio
Kit W/Tools
Flashing
European Siren
Model MSK200
ST22
The WMSK200 includes
Safety Spectacles
a 25W soldering iron
with stand, side cutters,
safety spectacles, and
an FM-88K Two IC
(integrated circuit)
Radio soldering kit.
This kit includes
WMS1200 25W
everything you need to Soldering Iron
WMSC1
Wire Cutters
build a functional FM
radio receiver.
Model AK-100
This kit is a must for the
beginner. After practicing
your soldering techniques
on the special area of the
board, you’ll be ready to
WMS1200 25W
assemble this European Soldering Iron
siren with flashing LEDs.
This kit also includes a
soldering iron and wire
cutters. Requires one (1) 9V
battery.
FM-88K
Soldering Iron
Stand
18
AK-100
Soldering Iron
Stand
WMSC1
Wire Cutters
WEmake™
WEmake Tools are specially developed for the “Maker” culture. From the beginner to intermediate hobbyist.
™
Affordable, quality tools for easy use and multiple applications.
Flexible Neck
3X Magnifying Glass
Integrated
Third
Hand
Solder
Wire
Spool
Holder
Helping Hand with Magnifying Glass
Model: HH-55
For soldering or making fine adjustments. Adjustable arms can
hold objects in any position.
Soldering Iron Stand
LED Lamp
Alligator Clip
Cleaning Ball
Sponge
Rosin
Rosin
Container Cap
LED Magnifying lamp with third hand
Model: ZD-10Y
This multi-purpose tool offers an excellent all around solution,
ideal for working on small PC boards, components, soldering, etc
Soldering Iron Stand
Model: SH-1
Safety Goggles
Model: WSMG 20
Heavy-duty holder with sponge.
Contours to head • Safety Approved
25W Soldering Iron
Model: WMS 1200
Wire Stripper
Model: WMS30
Long Nose Pliers
Model: WMLNP2
Side Cutters
Model: WMSC1
Lead-Free Solder • 1LB Roll
Model: WM1LB
Lead-Free Solder
Model: WMLF993
Silver Solder
Model: WMSIL3
Anti-Static Desoldering Pump
Model: WMSP4
25W Pencil Iron • Stand Included
Rosin core • 0.031” diameter 99.3% tin
• 0.7% Copper
7 in 1 Multi-purpose•Strips AWG 18-26
Rosin core • 0.031” diameter 99.3% tin
• 0.7% Copper
5” Long • Drop Forged Carbon Steel
Rosin core • 0.031” diameter 96% tin
• 4% Silver
19
41/2” Long • Drop Forged Carbon Steel
High Vacuum Pump • Anti-Static Tip
Copyright © 2017, ELENCO ELECTRONICS, INC. All rights reserved.
No part of this book shall be reproduced by any means, electronic,
photocopying, or otherwise without written permission from the publish er.
WEmake
™
TOOLS FOR MAKERS
WMSK300201710V4
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