In this post I’ll cover how to interface with the CO Detector I covered in earlier posts. Based on the measurements I did, the CO Detector has 4 outputs and 1 input the we can interface with. Here is a list of these interfaces along with a brief description. SW1 – Test Button VDD1 – Power On ICSPDAT/RS232 – Data LED1-A – Status LED H1-A – Alert Buzzer One thing that I like to do before building a bread board … Continue reading CO Detector Hack – Part 3