Hi, I’ve had my rainbowduino for awhile and have programmed it with my arduino Mega several times. But last week it refused to be programmed. I just get “programmer not responding” in the arduino ide. So I bought a USB FTDI cable to use and now I get the same exact error.
I’m thinking the bootloader is messed up somehow, but I don’t know how to fix that problem.
Thanks for any help,