Sorry, one more mistake. On the board, the UART port connector rotates on 180 degrees. In this case, UART on the Orange PI Zero and UART on the board should be connected with wires.
A
ASV
@ASV
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💬 ZTX IP CONTROLLER -
💬 ZTX IP CONTROLLERGood solution, but have a mistake. Voltage regulator 3.3V. Wrong pinouts on the PCB.