A good point -- UnoArduSim sure can't simulate any oddball faults/bugs inside your specific external hardware I/O device, but by attaching the corresponding UnoArduSim "fault-free" IO device you can tell you if your code is the problem. The limited set of these virtual IO devices and supported libraries (which could be expanded in a following release) will hopefully be sufficient for most users, and if your particular device is not supported yet, you can try temporarily commenting-out/replacing the section of code that accesses it so that you can still test the other parts of your program.
1 Like