HP monitors runs EmonESP WiFi Emoncms link firmware
- Ensure Tx jumper is open (not connected)
- Close GPIO0 jumper (required to enter bootloder mode)
- Power cycle the board by un-plugging then plugging in mini-usb 5V DC power
- Upload via UART closest to ESP @ 115200 baud
- See EmonESP readme for PlatformIO or ArduinoIDE instructions
- Remove GPIO0 and power cycle
- Ensure Rx and Tx jumpers are open (removed)
- Upload via UART closest to ATmega328