The D3AA uses an AVR32DD20 MCU that can be programmed with UPDI, it has a standard flashing pad layout so my programmers and Gchart’s are compatible.
But, it appears the 3.3V version of my programmer isn’t very reliable with this driver, the one I used during development works fine but the one I sent to Toykeeeper worked sporadically, I did find another one from what I’ve left that also couldn’t power the driver correctly.
Presumably the problem is that it can’t provide enough power due to the relatively high inrush current of this driver, it might be just at the limit so it can work with some programmers but not others.
If you have a 3.3V programmer (written on the back) and have trouble flashing your (future) D3AA, please message me.
The first versions didn’t have a voltage marking, they’re 5V and should work without problem.
The next batch of programmers will be 4.5V with more output capacitance and should not have this sort of problem.