Intelligent tracing car kit D2-1 patrol tracking car trolley car DIY electronic spare parts

Description

Intelligent tracing car kit D2-1 patrol car trolley car DIY electronic spare parts to send track
Non-programming intelligent tracking car kit (LM393 classic application circuit, teaching model)
Installed after the success of the car can be along the width of 15mm black track forward. Circuit by, photoelectric sensing, voltage comparison, the motor drive several parts. The luminous tube is projected to the black and white parts with different reflectances, and the received photoresistor resistance changes. LM393 compare the size of two photosensitive resistors, control the operation of the motor on both sides, thereby correcting the direction of the car to ensure that the car along the black track forward, the motor is equipped with slowdown device, please hand vigorously rotation to prevent damage.