Hello, so it is definitely so that the metadata is not saved, if one it off via the power button. Does anyone have experience in whether or not in the Mausberry script something can be changed, that it is properly closed and then the Pi is down?

@petrockblog Thanks for the info!

I don't have a Hot Air Rework Station, but I may be able to get my hands on one at work.

Can I just ask, what are your thoughts on the Kynar wiring in the link-would it be suitable? And one thing I cannot find the answer to (unless I have over looked it): how much height does the Powerblock add to the the Pi, just incase I decide to go for a new one?

Cheers,
Dan

@XD3l I don't know if there stuff is also in the US but some electronic warehouses sell Xmas calendars for electronics.
There are 24 doors to open and behind every door there is a new (very small) project to build. Here is a list with experiments :) and I think there also is a kit for the Raspberry Pi online :)

Edit:
The kit with RPi experiments

@jkacza
I can try to help, but it depends on what you need to know exactly, my project is now done and works nicely, but it would be super long to explain the entire process from scratch, and I won't be able to remember everything.
I can share my scripts of course, my system works with multiple scripts and is pretty complicated, but to simplify, for this functionality, I could say that I have:

The code in the arduino that turns ON/OFF the leds and changes the colors A python script that sends the colors and led IDs information to the arduino (from the micro-controller). And when I launch a game, I have a bash script that reads a text file (where I put all the button information), then it sends this info to the python script.

Here are some pics of my project (I did it in 2 copies, one for me and one for a friend):
https://drive.google.com/open?id=0B2uCL2ZSBiqDaFJRTms1a3Iwbkk
https://drive.google.com/open?id=0B2uCL2ZSBiqDSWRESDlHZU1tSjg

You'll need to create a type route sound output and direct both hardware outputs to it:

http://www.6by9.net/output-to-multiple-audio-devices-with-alsa/

If anyone gets the error "pacdrive: error while loading shared libraries: libhid.so.0: cannot open shared object file: No such file or directory" with Retropie 4.4 on a Raspberry Pi, use this command to fix it:

sudo mv /usr/local/lib/libhid.* /usr/lib/arm-linux-gnueabihf/

It will move the libhid files to the correct location where pacdrive can find them.