ok pics time !
In the beginning it started with 2 buttons that via the arduino usb cable and a software Serial2Midi converter, it performed simple MIDI on offhttp://s15.postimage.org/w6vqxfsex/185399_4098535596116_2109559659_n.jpg
Then it grew up to be 1 multiplexer wired with 6 pots and those same 2 buttonshttp://s11.postimage.org/i7czkuvo1/599381_4146699280178_1730773599_n.jpg
Then the desire of more buttons and knobs came and a diy arduino shield was born (Such a genious board arduino is, such a stupid error to make the spacing awkward :-/. With longer headers and some crafty bending its fixable.)http://s14.postimage.org/emblrhl74/SDC10382.jpg
This is the final layout, box is made from 3mm thick very dense fibre board i found on the street. (Someone had thrown away his kitchen drawers and stuff)http://s12.postimage.org/g0hxos04c/SDC10390.jpg
Everything in place ready for soldering. It looks like a mess, but i prefer to call it controlled chaos http://i.imgur.com/8gA8d.jpg
Close up of the circuitboard - 10 debounce circuits for the 10 buttonshttp://i.imgur.com/rtifq.jpg
Everything soldered in place http://i.imgur.com/SH0O7.jpg
And the box closed.http://i.imgur.com/XLRsD.jpg
Here is the code for the midi controller.http://pastebin.com/hY8PVhED
Here is the debug code for the controller, helps alot.http://pastebin.com/wdDbidAJ
If someone wants the schematic, let me know.
I know everything is not fancy and shiny, but hey thats my first box i made and the first arduino project i made.
Many thanks to Addidis for helping me go through all of this http://www.jeselectronics.com/
ps. sorry for the pics being as url but they are too big.