D2-1Smart Tracking Robot Car
Instruction Manual
Thank you for purchasing the D2-1 Line Tracking Car Kit. This kit gives you an
initial understanding of the principles of automatic control and technology. We hope
that you will learn useful knowledge and skills in this product, and for further learning in
the future lay a good foundation. When using this product, please assemble it
according to the instructions in the manual so that it can be correctly use this product.
PCBA Assembly Process:
1. According to the circuit diagram and the identifier on the circuit board, the color ring resistance,
8-pin IC socket, switch, potentiometer, three poles are sequentially turned. The tube, electrolytic
capacitor, and 3mm light-emitting diode are soldered to the circuit board. Pay attention to the
direction of the IC socket. In addition, for the convenience of debugging, the chip is not installed
for the time being.
2. Install the battery box on the circuit board according to the positions of the wiring holes and
identifiers on the circuit board. Pay attention to the power pads. Do not reverse the polarity,
usually the red lead is the positive pole of the power supply.
3. Turn the front side of the circuit board upward and screw the universal wheel into the hole.
And screw in the universal wheel nut and the universal wheel to tighten.
4. With the bottom of the circuit board facing up, solder the φ5.0 light-emitting diode and the
photo-sensor to the board according to the markings on the board. It is required that the distance
between the light emitting diode and the photo-sensor is about 5mm from the spherical surface
of the universal wheel.
5. Insert 2 AA batteries in the battery box, switch the switch to the "0N" position, at this time, the
2 lights of the sensor. The diode should emit light. If it does not emit light, you may reverse the
polarity of the φ5.0 light-emitting diode. After the polarity is reversed, after the commissioning is
successful, the self-locking switch that pops up will be powered off for standby.
Assembly of mechanical parts:
1. Put the silicone tire on the wheel.
2. Fix the wheels on the shaft of the reduction motor with hub screws.
3. Divide the connecting wires into 2 sections and solder them on the two reduction gear motors
for later use.
4. Stick the motor on the circuit board according to the identifier on the circuit board.
5. Weld the leads on the motor to the motor board according to the identifier.
Vehicle commissioning:
1. Test the drive circuit, press the self-lock switch to power on, and connect pins 1, 7, and 4 of
the 8-pin IC. At this time, the geared motor should be turned forward, otherwise the lead position
of the corresponding motor can be changed. If the motor does not turn, check whether the triode
is reversed and the base resistance (10 ohms) is correct.
2. Insert the LM393 chip into the 8-pin IC socket after power-off. After power-on, adjust the
corresponding potentiometer to make the car walk normally on the black line without running out
of the black line. The manual is attached to the test track. You can also request an electronic
version from the dealer or use 1.5 cm to 2.0 cm wide black tape, insulation tape, etc. as the track.
Circuit diagram
