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Assembly steps:
  • Step 1: Welding circuit
    • Electric welding part is simpler, welding sequence according to the principle of component level from low to high, the first welding eight resistance, is important to use multimeter to confirm resistance is correct, D4, D5 R13 R14 can temporarily not welding, integrated circuit chips can temporarily not inserted
  • Step 2: Mechanical assembly
    • The red line is connected to the 3V positive power supply, the yellow line grounding, excess wire can be used for motor wire.
  • Step 3: The installation of a photoelectric circuit
    • Photosensitive resistance and light-emitting diodes (note polarity) is reverse-mounted on the PCB, and the ground distance is about 5 mm, both photosensitive resistance and light-emitting diodes are 5 mm distance. Finally, you can power test.
  • Step 4: Vehicle debugging