Environment Sensor HAT for Raspberry Pi
Multi-sensor environment HAT for Raspberry Pi measuring environmental parameters via I2C bus.
Pinout
- 5Vphysical pins 2 and 4
Raspberry Pi 40-pin HAT supply input used by the board regulator, shown on the official schematic as RPI_5V / 5V.
Type · PowerVoltage · 5V - 3V3physical pins 1 and 17
Raspberry Pi 40-pin 3.3 V rail exposed on the HAT connector, shown on the official schematic as 3V3.
Type · PowerVoltage · 3.3V - GNDphysical pins 6, 9, 14, 20, 25, 30, 34 and 39
Ground return on the Raspberry Pi 40-pin HAT connector.
Type · GroundVoltage · 0V - SDA1physical pin 3 / GPIO2
I2C data line for the onboard environmental sensors; Waveshare states the module reads data over I2C and the schematic maps RPI_SDA to SDA.
Type · I2CVoltage · Raspberry Pi I2C logic level via onboard level translation - SCL1physical pin 5 / GPIO3
I2C clock line for the onboard environmental sensors; Waveshare states the module reads data over I2C and the schematic maps RPI_SCL to SCL.
Type · I2CVoltage · Raspberry Pi I2C logic level via onboard level translation
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| 5V | physical pins 2 and 4 | Power | Raspberry Pi 40-pin HAT supply input used by the board regulator, shown on the official schematic as RPI_5V / 5V. | 5V |
| 3V3 | physical pins 1 and 17 | Power | Raspberry Pi 40-pin 3.3 V rail exposed on the HAT connector, shown on the official schematic as 3V3. | 3.3V |
| GND | physical pins 6, 9, 14, 20, 25, 30, 34 and 39 | Ground | Ground return on the Raspberry Pi 40-pin HAT connector. | 0V |
| SDA1 | physical pin 3 / GPIO2 | I2C | I2C data line for the onboard environmental sensors; Waveshare states the module reads data over I2C and the schematic maps RPI_SDA to SDA. | Raspberry Pi I2C logic level via onboard level translation |
| SCL1 | physical pin 5 / GPIO3 | I2C | I2C clock line for the onboard environmental sensors; Waveshare states the module reads data over I2C and the schematic maps RPI_SCL to SCL. | Raspberry Pi I2C logic level via onboard level translation |
Pin details
5 connections- 5Vphysical pins 2 and 4
Raspberry Pi 40-pin HAT supply input used by the board regulator, shown on the official schematic as RPI_5V / 5V.
PowerVoltage · 5V - 3V3physical pins 1 and 17
Raspberry Pi 40-pin 3.3 V rail exposed on the HAT connector, shown on the official schematic as 3V3.
PowerVoltage · 3.3V - GNDphysical pins 6, 9, 14, 20, 25, 30, 34 and 39
Ground return on the Raspberry Pi 40-pin HAT connector.
GroundVoltage · 0V - SDA1physical pin 3 / GPIO2
I2C data line for the onboard environmental sensors; Waveshare states the module reads data over I2C and the schematic maps RPI_SDA to SDA.
I2CVoltage · Raspberry Pi I2C logic level via onboard level translation - SCL1physical pin 5 / GPIO3
I2C clock line for the onboard environmental sensors; Waveshare states the module reads data over I2C and the schematic maps RPI_SCL to SCL.
I2CVoltage · Raspberry Pi I2C logic level via onboard level translation
Start wiring
Single data line · Analog · I2C · 3.3 – 5 V · Breakout
Confirm the data interface matches your host board.
Module pins: 5V, 3V3, GND, SDA1, SCL1. Schematik maps them to your board in the app.
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