Its amazing what a bit of wood stain can do

Its very close! nearly all working. if you have eagle eyes you'll notice the LED's for the channel select aren't in yet. the channel selection function is the only thing left to finish. ill be doing that tomorrow evening. and if all goes well this should be the next vid! its taken a few days longer than I hoped, I was hoping to have this vid out today but that ain't happening haha.

the case is made from some scrap timber I had its not perfect but amazing what a bit of wood stain can do! 

Things I have learnt with this project so far :-

if your working with this many jacks and potentiometers, to keep voltage regulators happy have a few, I have gone with 1 7805 voltage regulator per 11 potentiometers to be the +5v on them.  this may be overkill but I learnt in the Furby organ you can't just wire up 70 potentiometers to the same 7805 and expect it not to get sizzling.

Don't fix soldering mistakes when its plugged in, the multiplexers seem to be a tad fragile. they get hot and also make the voltage regulator its plugged into get hot too. I have gone through a few multiplexers in this project. so if your looking at doing something similar with strip board id recommend getting a few spares! and that leads me onto the next one. sockets!!! socket them multiplexers. 

you can get away with wiring an LED and a 1k resistor between pins 4 and 5 (long leg to 5v and short leg to the signal pin, I always forget which are which!) of a midi socket to show the midi stream and it doesn't effect the output. I can imagine plugging in too many may fudge it up. but seems snazzy no need for a buffer on this. 

if its gunna take a lot of faffing with pulling Arduinos out and stuff because you forgot to add switches to the midi input then make everything even the power socket available on the front panel. so you can completely remove the whole machine from its wooden casing without any faffing with panels elsewhere on the case.

With any luck you'll see it in action within the next day or two!!! I am doing a vlog tomorrow on some Analog to digital converter chips I've got, im intrigued to plop some LED's on the output and pop some analog signals into them

im not sharing this project publicly till I know its working! (or a monumental failure haha)