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Shipped from abroad
Free return within 15 days for all eligible items.Details
shangzhong
84%Seller Score
3 Followers
Shipping speed: Average
Quality Score: Excellent
Customer Rating: Good
Feature:
Non-programmed smart tracking car kit
After the successful installation, the car can travel along a black track with a width of 15mm.
The circuit consists of several parts, photoelectric sensing, voltage comparison, and motor drive.
The reflectance of the light-emitting tube projected to the black and white portions is different, and the resistance of the received photoresistor changes.
LM393 compares the size of two photo-resistors, controls the operation of the motors on both sides, and corrects the direction of the car to ensure that the car advances along the black track. The motor is equipped with a speed reducer. Do not rotate vigorously to prevent damage.
Note: Powered By 2pcs AA Battery (Not Included)
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*Shipping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 5 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer).Your satisfaction is our first priority.
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