Seeed Grove listing of the Sensirion SEN55 all-in-one air quality module measuring PM1.0/2.5/4/10, VOC index, NOx index, humidity, and temperature over I2C via Grove connector.
I2C clock
I2C data
supply
ground
| Pin | Position | Type | Function |
|---|---|---|---|
| SCL | 1 | I2C | I2C clock |
| SDA | 2 | I2C | I2C data |
| VCC | 3 | Power | supply |
| GND | 4 | Ground | ground |
I2C clock
I2C data
supply
ground
I2C · Analog · UART · 3.3 – 5 V · Breakout
Waveshare lists MQ-2 for combustible gases and smoke, MQ-3 for alcohol, and MQ-135 for mixed indoor pollutants such as NH3, NOx, alcohol,…
Module pins: VCC, GND, SCL, SDA. Schematik maps them to your board in the app.
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