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Mainboard Precautions

Power Indicator Lights​

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  • When powered only via TYPE-C without connecting any other mainboard power sources, at least two lights, 3.3V and 5V, should be illuminated.
  • After connecting the mainboard power supply, the mainboard power indicator lights should show 3.3V, 5V, and VCC.

Troubleshooting​

Important Notes
  • With no external devices connected (drivers, limit switches, 12864 displays, etc.)
  • When powered only via TYPE-C, the 3.3V light should at least be constantly illuminated.
  • If the 5V light does not illuminate after connecting both the mainboard power supply and driver power supply, please contact customer service for after-sales support.

Drivers​

  • The mainboard supports external drivers. Wiring and Configuration Tutorial

Limit Switch Ports​

  • Please pay attention to the wiring sequence. For three-wire limit switches, note the connections for 5V, GND, and S. Incorrect connections may likely cause damage to the mainboard.
  • For two-wire limit switches, simply connect S and GND.
  • PL08 and other proximity switches require an external diode on the signal port to reduce the voltage below 3.3V.
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