Air Quality Monitor 3d model
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Thingiverse
Air Quality Monitor

Air Quality Monitor

by Thingiverse
Last crawled date: 4 years, 3 months ago
An air quality monitor with oled display. Shows a graph of the air quality the last hours. Each line on the graph represents 5 minutes.
Hardware used:
MQ-135 gas detection sensor
128x64 pixel OLED display
Wemos D1 - any ESP8266 based microcontroller, or even an Arduino Nano can be used instead.
Software used:
The Arduino-sketch can be downloaded here: https://gitlab.com/chordless-arduino/air-monitor
Wiring:
Wemos D1
Powered by micro usb through the rear of the case.
Oled Display
VCC connected to 3.3V pin on Wemos D1
GND connected to GND pin on Wemos D1
SDA connected to D2 pin on Wemos D1
SCL connected to D1 pin on Wemos D1
MQ-135 Sensor
VCC connected to 3.3V pin on Wemos D1
GND connected to GND pin on Wemos D1
Analog output connected to A0 pin on Wemos D1

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