Line-Following Robot Kit (OT9082) – Instruction Manual

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This instruction manual explains how to assemble the OT9082 Line-Following Robot Kit yourself by soldering it together. Required tools: soldering iron, solder wire and side cutters.

Component list

Component	Location	Component	Location
Resistor 510Ω	R8, R9	Green LED 3mm	D1, D2
Resistor 1KΩ	R10, R11, R12, R13	Infrared LED transparent	D3, D4
Resistor 5.1KΩ	R4, R5	Infrared LED black	D5, D6
Resistor 10KΩ	R1, R2, R3	Transistor 8550	Q1, Q2
Capacitor 10 µF	C4	Potentiometer 10KΩ	R6, R7
Capacitor 100 µF	C5	24-pin IC socket	U1
Crystal 6Mhz	Y1	8-pin IC socket	U2
Ceramic capacitor 30	C6, C7	On/off switch	S1
Ceramic capacitor 104	C1, C2, C3

Electrical schematic of the OT9082 robot kit — Diagram of the line-following robot

Photo of the fully assembled robot with batteries — The assembled line-following robot

Package contents

3x Ceramic capacitor (104)
2x Ceramic capacitor (30)
1x Capacitor (10µF)
1x Capacitor (100µF)
1x 20-pin header
1x Crystal (6 Mhz)
2x Green LED (3mm)
2x Infrared LED (5mm)
2x Infrared receiver LED (5mm)
2x Transistor (8550)
3x resistor (10KΩ)
2x resistor (510Ω)
4x resistor (1KΩ)
2x resistor (5.1KΩ)
2x resistor (10KΩ)
1x IC Atmel 89C2051 24-pin
1x IC socket 24-pin
1x IC LM393 8-pin
1x IC socket 8-pin
2x TT motor JD3-100
2x Plastic wheel
2x Silicone bands
2x wheel screw
1x battery holder (2x AA)
1x PCB
1x support screw with nut and cap nut
1x black wire
1x red wire
1x On/off switch
2x double-sided tape for motor mounting

Overview photo of all included components and parts — All parts of the kit

Assembly instructions

The polarity of the infrared LED transmitter and receiver is reversed.

The ICs and socket must be placed in the correct direction. The components and their locations are listed on the back side.

Start by soldering the resistors. Resistors are not polarized, which means you can place them in either direction and there is no + or –.
Solder the transistors and make sure that the flat side and the round side match the image on the PCB.
Solder the capacitors and pay close attention to the + and the -. The capacitor has a white band shown with a minus sign in it. You can also tell by the length of the leads. The long lead is the + and the short lead is the -. On the PCB, the slanted white stripes indicate the - side.
Solder the ceramic capacitors. These are not polarized, so it does not matter how they are placed (no + or – side).
Solder the green 3mm LEDs and the infrared receiver and transmitter LEDs. On each LED, the long lead is the + and the short lead is the -. The minus side can also be identified by the flat side on the LED itself. The polarity of the transmitter LED is opposite to that of the receiver LED. Pay attention to the lead lengths.
Solder the IC sockets in place. Pay attention to the half-round notch. This must match the image on the PCB. Then place the ICs in the socket, and the ICs also have a half-round notch that must face the same side as the socket.
Solder the ceramic capacitors in place (alternative image). These are not polarized.
Solder the supplied wiring to the DC motors and to the PCB. Pay attention to the polarity. When the wheels rotate, they must always turn forward. On the PCB, the + is mounted on the outside and the – on the inside.
Solder the ceramic capacitors in place with the red wire connected.
Solder the remaining components such as the potentiometers and the on/off switch in the correct location. Mount the wheels on the motor shafts and then stick the motors to the PCB using the double-sided tape.
Mount the screw with the cap nut on the underside of the PCB. Make sure the infrared LEDs are just slightly shorter than the screw head. The robot rests on this round cap nut. Ideally, the distance between the infrared LEDs and the ground is 1 a 2mm.
Mount the battery holder and solder the wires to the PCB.
Calibrate the sensitivity of the infrared sensors by turning the potentiometers.

OTRONIC® is a registered trademark. Nothing from this instruction manual may be copied without permission from OTRONIC. For more information about OTRONIC products, visit OTRONIC.NL. OTRONIC – Crommelinbaan 61c – 2142 EX – Cruquius – Nederland.