Page 7 2019-05-10 [email protected]
J11: Optional external ON/OFF control button and LED indicator
1, 2: To external LED indicator. 1 : Anode(+), 2 : Cathode(-).
3, 4: To optional external push button for ON/OFF control, internally connected to knob encoder.
J10: UART reserved for communication or FW upgrade
3: Rxd.
4: Txd.
5: GND
All other pins: reserved please keep un-connected
9600, N, 8 ,1
J13: Micro USB socket, reserved for future applications or FW upgrade