This will be the last post on the subject of interfacing the First Alert CO Detector with a wireless ESP8266 module. The limits of the ESP8266 and lower costs of the higher functioning ESP32 module prove that this effort is not worth continuing. I will say that the overall simplicity of this project should provide a firm footing for future projects. The process from start to finish can be applied to any number of electronic devices. So with that said, … Continue reading CO Detector Hack – Part 9