I received a pair of A0-100 printers for free, that didn’t work. I was able to combine parts from both to make one work and everything was fine. That was a couple years ago, and now after many months of not touching the printer I can’t get it to connect to cura. When I click connect, it just says “connecting” forever. Any advice would be really helpful, and I will gladly provide more information if you have questions.
The first item to check will be that you have your baud rate and port set correctly in Cura. The A100 used 115200 baud rate if I recall correctly. You can also try to connect via pronterface, as that is what we were recommending when selling the AO series of printers.