I built a project using the Sparkfun Qwiic single relay and programmed the Arduino Uno that triggers this relay using my desktop computer. Everything worked fine until I moved the project to my workshop and modified the program on my laptop. At this point the Qwiic relay would not initialize at relay.begin(). After playing around with the libraries, rebooting, etc. I moved the Arduino project back to my desktop computer and the relay still doesn’t initialize. The code and libraries are shared on a cloud server which is how I transfer code between my computers. My knowledge of I2C and such is minimal and my project code is mostly modified example code. One other thing, I am not using Qwiic connectors. Any suggestions on trouble shooting this problem is appreciated.
Good new and bad news…Fortunately I always buy more parts than I think I will need and tried a different relay which works, so it looks like my original relay is fried. Anyway thanks for everyone out there helping newbs like me.