14
I2C_SCL
I2C_SCL
I C clock signal for
BME280, VEML6075 and
other Qwiic/I C devices.
17
UART_TX1
TX1
UART1 data output. Tied
to TX1 PTH header pin.
18
D1/CAM_TRIG
RAIN
Digital pin for rain meter
signal.
19
UART_RX1
RX1
UART1 data input. Tied
to RX1 PTH header pin.
20
UART_RX2
RX2
UART2 data input. Tied
to RX2 PTH header pin.
21
SWDCK
SWDCK
Serial Wire Debug Clock.
22
UART_TX2
TX2
UART2 data output. Tied
to TX2 PTH header pin.
23
SWDIO
SWDIO
Serial Wire Debug I/O
32
PWM0
PWM0
Dedicated PWM0 pin.
Broken out to PTH
header pin.
34
A0
SOIL_MOIST_SIG
Analog input from soil
mositure sensor.
38
A1
WDIR
Analog input for wind
direction.
40
G0/BUS0
SOIL_MOIST_PWR
General purpose pin
configured for 3.3V
output.
42
G1/BUS1
LIGHTNING_CS
AS3935 Chip Select.
44
G2/BUS2
HEADER_CS
General chip select pin.
Tied to SPI PTH header.
46
G3/BUS3
LIGHTNING_INT
AS3935 interrupt pin.
47
PWM1
PWM1
Dedicated PWM1 pin.
Broken out to PTH
header pin.
49
BATT_VIN/3
VIN/3
Divided input voltage for
monitoring power supply.
2
2