Another thought, why not use the analogue input of an arduino (already in use in a lot of builds) to monitor battery voltage?

I know that analogRead is a slow activity, but I doubt it would be slow enough to degrade play.

Why not have the attiny send keystrokes to the pi when certain voltage levels are detected, then run a background service to listen for and react to the voltage levels?

I was thinking about doing this over the last few days....

Ah holdon, I see you are using the hardware serial for the purpose/

FYI I dont think that your fix was what I needed... I finally got mine working, but the problem was at the Arduino Micro side. I bought a cheepo chinese clone, never really had much of a problem with them before. On the Arduino there are pads marked J1. They should be bridged if the micro is a 5v 16...

I am not sure what you are looking to do, but I might be able to offer a suggestion... I have ordered these.... http://www.ebay.co.uk/itm/322017456081?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT I aim to create a digital volume control rather than relying on an analog pot. You could u...

Glasgow, Scotland

https://gist.github.com/gbaman/975e2db1 ... e45e8fd40a

Here are the instructions that I followed (I think)

I am having the same problem. Cant wait to test this..

One thing, I did modify my firmware to access the pi in OTG mode from my PC. I thought I had reverted the modifications back, but I wonder if a driver has changed somewhere?

You did not happen to do the same in the past did you?

Got a multimeter? I am going to guess (picture not clear that the three legged componnent marked U2 is a 3.3v voltage regulator. If you measure the voltage on the three pins smaller pins (with the screen powered), there is a good chance that one will measure 5v. There are also unpopulated pins above...

These are not strictly from the UK, but all bought from inside of the UK and most have arrived safely. Still waiting for a few items Aftermarket case from ebay http://www.ebay.co.uk/itm/OEM-Limited-Colorful-Housing-Shell-Case-For-Nintendo-Gameboy-Classic-GB-DMG-/381781589926?var=&hash=item58e3f4bfa6...

Slightly different way to bypass from the wiki... A smidgen neater IMHO