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Non-Programmable Tracking Model Smart Car Kit (Classic Application Circuit on LM393, Tutorial Model).
After successful installation, the car can drive on a black track with a width of about 15 mm. The circuit consists of a photoelectric sensor, a voltage comparison device and a motor drive. The reflectivity of the black and white parts of the projected LEDs is different, which means that the resistance value of the photoresistor will be different. The LM393 compares the resistance of the two photoresistors and controls the motors on both sides, thus correcting the direction of the cart and making the cart move along the black path. The engine is equipped with a deceleration device.
Batteries 2pcs type AA. Batteries are not included.
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