Monitoring french EDF electric meter consumption.
This code runs on (particle.io) based platforms. Warning, you need an opto isolator when connecting your circuit into EDF's meter.
(https://www.worldofgz.com/electronique/recuperer-la-teleinformation-erdf-sur-larduino/) (https://blog.antoineve.me/2015/05/30/teleinformation-erdf-avec-arduino/)