This project runs on an ESP8266, using MQTT over Wifi to send the air quality and temperature information back to openHAB.
Arduino project for ESP8266 board.
I used the OSH Park service to fabricate the board for this project, sending them just the board file.
Designed in Autodesk Fusion 360, available on Thingiverse.
- ESP-01S Wifi microcontroller (something like this)
- Panasonic SN-GCJA5
- DS18B20 temperature sensor (TO92
- AMS1117 3pin stepdown breakout board (one of many to be found)
- 2x 4.7k Ohm resistors (no particular reason to use these)
- 2.54mm Pitch 2X4 8 Pin Female Double Row Straight Header PCB Connector (I used these)
- USB Micro B power connector (parallel or perpendicular to the board)
- 5v USB power supply (I just used one of the many that I have from dead cell phones and such)