Smart Robot Car Kits Tracking Car Photosensitive soldering exercise Kits SNP-6






LM393 chip compare the two photoresistor, when there is one side photoresistor LED on WHITE the side of the motor will stopped immediately, the other side of the motor spin up, so that the trolley correction direction, back to the right direction , the entire process is a closed-loop control, thus rapid and sensitive control.

install guide:  ON instructables


how to use?

check resistance use multi meter, put the right position on the pcb board and weld. adjust the infrared receiving tube make it tracking the black line.



*this product no have battery,

*the laterest version wheel has change to yellow color






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