- SPS30 sensor is connected to the UART2 port of the Lolin32-lite board.
VCC
pin of the sensor is connected to the +5V output of the step-up converterRX
pin of the sensor is connected to theIO27
pin of the boardTX
pin of the sensor is connected to theIO26
pin of the boardSEL
pin of the sensor is not connectedGND
pin of the sensor is connected to theGND
pin of the board
- BME280 module is connected to the I2C port of the Lolin32-lite board
SDA
pin of the sensor is connected to theIO33
pin of the boardSCL
pin of the sensor is connected to theIO32
pin of the boardGND
pin of the sensor is connected to theGND
pin of the boardVCC
pin of the sensor is connected to the3V3
pin of the board
- Pololu 2810 switch is mounted under the main board and handled by pass-through pins:
GND
connected to the GND pin of the boardEnable
pin connected to the IO12 pin of the Lolin32-lite board (next to the GND pin)VIN
pin connected to the battery+ of the Lolin32-lite boardVOUT
pin connected to the + input of the step-up converter. Addtionally, it's connected to voltage divider (R1=220k, R2=330k) and the output of the divider is connected to theIO2
pin of the board. This pin is used to measure the battery voltage.
- step-up converter's is fixed into separated place on the frame
+
input is connected to the VBAT pin of the Lolin32-lite board-
input is connected to the GND pin of the Lolin32-lite board+
output is connected to the VCC pin of the SPS30 sensor.