I made a Leonardo clone using the 32U4.
The bootloader is up and running and I can use the Arduino IDE to load sketches. It even works with ArduinoDroid on my phone if I pull the reset low just before uploading.
However, I want to use Firmata to control it, but this is causing some issues. I can upload StandardFirmata, but my pc does not get any data back. Works fine with UNO..
Firmata test program:
Can anyone shed some light on this?