I create an ORP node (add PH later)
Currently I have 2 ways (ESP with Webserver and MQTT and MySensors).
I publish an early relaese for mysensors on github : https://github.com/fab33/MySORP
Sensor for Vallox DigitSE RS485 ventilation system with integration into FHEM.
d-diot Gas sensors and RGB lamp
When 3D printing and electronics work together!
Particle Powered Air Quality Sensor Logging to Google Docs
Candle - signal Hub - A universal 433Mhz signal detector and cloner
Irrigation Controller (up to 16 valves with Shift Registers)
Round water tank level sensor