Air quality monitor
Gas levels on a screen, with a warning LED.
I want to build an air quality monitor on an ESP32 with an MQ135 sensor, a 0.96 inch OLED and a warning LED.
Parts
ESP32-DEVKITC Development Board In stock
MQ-135 Air Quality Gas Sensor Module In stock
SSD1306 0.96 inch 128x64 OLED Display Module In stock
5mm Common-Cathode RGB LED In stock
Male-to-Male Breadboard Jumper Wires (20 cm, 24 AWG) In stock
400-point solderless breadboard In stock
USB A to Micro B Cable 1m In stock
120 Resistors 1/4W Carbon Film Assortment Kit In stock
Pins, wiring and code
The pin table, the wiring steps and the code for this build are in Soldr. Start this build on Soldr - you can change it before you buy.