MICS6814 Micropython driver

Hardware

The MICS6814 sensor measures changes in the concentration of gases including carbon monoxide (CO), nitrogen dioxide (NO2), and ammonia (NH3) with this Breakout Garden compatible I2C breakout.The breakout board uses a Nuvoton MS51 microcontroller to give you an I2C interface for the sensor(redundant huh!)

Usage

Connections

• SCL -> GPIO22
• SDA -> GPIO21
• 3.3v -> 3.3v
• GND -> GND
• int is not in use

ESP32 usage

import time
from machine import Pin, I2C
from mics6814 import MICS6814


i2c = I2C(1,scl=Pin(22),sda=Pin(21),freq=100000)
gas = MICS6814(i2c)

try:
    while True:
        readings = gas.read_all()
        print(readings)
        time.sleep(1.0)
except KeyboardInterrupt:
    pass

References

1. Pimoroni python library
2. Arduino library