Fermion: Formaldehyde Sensor (Breakout, 0-3ppm MEMS HCHO)
MEMS breakout sensor for formaldehyde detection (0–3ppm) with low power consumption, high sensitivity, and fast response. Suited for air purifiers, HVAC, and wearables.
Pinout
- A1Type · Signal
- VCC2Type · Power
- GND3Type · Ground
| Pin | Position | Type |
|---|---|---|
| A | 1 | Signal |
| VCC | 2 | Power |
| GND | 3 | Ground |
Pin details
3 connections- A1Signal
- VCC2Power
- GND3Ground
Start wiring
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, A. Schematik maps them to your board in the app.
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