{"NAME":"KS501-EU16A_V06","GPIO":[0,0,0,0,0,0,0,0,0,0,224,0,0,0,0,0,0,0,576,32,0,0],"FLAG":0,"BASE":1}

Pinouts are shown on the ESP32 Board. It’s VCC, GNC, RX, TX, ESP32C3 Rev.3

On some devices the serial connection is disabled and won’t work. One can then use the ESP32 built in USB-to-serial adapter by connecting a USB cable directly to the board. The pin opposite of VCC is USB data + (green wire), the pin opposite of GND is USB data - (white wire). Do not connect the other two (5V and GND) wires of the USB cable. Those have the wrong voltage and will brick your device! Connect GND and VCC on the board to a suitable 3V3 power supply instead.