Fermion: MEMS HCHO Sensor (breakout) Wiki - DFRobot

Introduction

Fermion: MEMS HCHO sensor employs state-of-the-art microelectromechanical system (MEMS) technology, endowing the sensor with compact dimensions (13x13x2.5mm), low power consumption (<20mA), minimal heat generation, short preheating time, and swift response recovery. This sensor qualitatively measures the concentration of formaldehyde gas, making it suitable for applications in air purifiers, HVAC systems, smart wearables, portable detectors, and more. The MEMS series currently encompasses 11 different types of gas sensors (HCHO, CO, CH4, VOC, NH3, H2S, EtOH, Smoke, Odor, H2, NO2), which can be combined as per specific requirements. Please note: This sensor is capable of qualitative measurements only. For quantitative measurements, kindly consider purchasing the Factory-calibrated Gas Sensor.

Precautions for use

Other Mems Gas Sensors

SKU SEN0563 SEN0564 SEN0565 SEN0566 SEN0567 SEN0568
Gas Type HCHO CO CH4 VOC NH3 H2S
SKU SEN0569 SEN0570 SEN0571 SEN0572 SEN0574
Gas Type EtOH Smoke Odor H2 NO2

Features

Specification

SEN0563-SIZE

Board Overview

Num Label Description
1 A Analog Voltage Output
2 VCC +
3 GND -

Tutorial

NOTE: The module needs to be warmed up for more than 5 minutes when powered on for the first time. It is recommended to warm up for more than 24 hours if it has not been used for a long time.

Requirements

Connection Diagram

SEN0563

Sample Code

1.Read the sensor raw value

int sensorPin = A0;
int sensorValue = 0;

void setup()
{
  Serial.begin(9600); //Set serial baud rate to 9600 bps
}

void loop()
{
  sensorValue = analogRead(sensorPin);
  Serial.println(sensorValue);
  delay(100);
}

Expected Results

Open the serial port monitor and get the original value of the sensor.

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