Osmond 1 Set of Electronic Soldering Learning Kit Smart Car Project Kits DIY Electronic Kit DIY Electronic Kit

No matter how the track is curved, the car can be driven automatically. We all know that reflectivity is different when the light source of white objects and black objects. Here we use a red light source. Light is reflected through the ground towards the photoresistor. By detecting the resistance of the photosensitive resistor, it can be determined whether the car is driving in the white zone. There is a 16mm wide black track in the white field. Tracking car can automatically drive along the black track. If the detection is black track, then the car to change the direction of driving and the engine will slow down or even stop and the red LED will turn off on the face of the circuit board. Drive the car in the opposite direction so that the car is always running along the track.