Header Pins
The board features 2 header pins. One is labeled as UART, the second one is labeled as I2C.
UART Pins
The UART pins can be connected to an external flasher to flash the board, if for any reason the onboard flashing isn't working.
Please reffer to the following image for the pin labeling:
The pins from left to right are:
- IO0
- EN
- TX
- RX
I2C Pins
The I2C pins can be used to connect additional I2C devices like other sensor.
Please reffer to the following image for pin labeling:
The pins from left to right are:
- GND
- SDA
- SCL
- 3.3V