Line-Following Robot Car – DIY Soldering Kit
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BUILD • SOLDER • TEST
Bring your circuit to life
Build a line-following robot car while practicing component placement and soldering. Once assembled and adjusted, the car uses light-sensitive components to follow a contrasting dark route.
Choose it for the build
The option is Parts. Soldering and mechanical assembly are required; this is not a ready-to-drive car. The pictured parts include the PCB, electronic components, two motors, wheels, gears, wiring, battery holder and assembly hardware. Arrange soldering tools separately. Batteries are not included.
A closer look at the circuit
- LM393 chip and photoresistors for the line-following circuit.
- Two DC motors with geared wheel drive.
- Board-mounted power switch and adjustable potentiometers.
- Battery holder and front metal support wheel.
Plan your project
Check component placement and polarity before soldering, then test and adjust the assembled car on a flat surface with a high-contrast route. Track materials shown in demonstrations are not confirmed as included.
Size: verified dimensions are not available, so cm and inch measurements cannot yet be provided. The exact battery type and whether printed instructions are supplied are also unconfirmed; check the supplied holder and kit guidance before use.
Component placement & underside reference
Workshop safety
For supervised electronics learning, not unsupervised play by young children. Hot soldering tools can burn; use eye protection and a well-ventilated workspace. Keep small parts away from children. Disconnect batteries before assembly or adjustments, avoid short circuits, and keep the circuit dry.
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