Here, I give you to provide a tracing car information. Microcontroller using the AT89C2051, motor-driven with L293D sensor group using four integrated reflective photoelectric sensor, using four LM324 op amp signal amplification for sensor group. Here are the physical map and detailed car circuit.

AT89C2051.rar
一款寻迹小车的制作资料2.wps
一款寻迹小车的制作资料1.wps

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