First thing first: I'm a total noob in electronics, and it's my first project. The project is to create a guitar effect footswitch, that can send out midi signals. So, obviously I need it to be pluggable into a wall socket, or even better, into a guitar pedalboard (USB is out of the question, and batteries are very unsuitable, I only need it to be turned on a couple hours per week, and I'd hate to see the batteries going down at the wrong time, e.g a concert).
So far I have a working prototype on a breadboard with an Arduino Uno, powered by USB, and I have a couple questions I'd like some help on, if you don't mind.
First, I tried to plug this http://truetone.com/1-spot/ into the DC jack, and it doesn't work at all. I have to admit I don't really understand why, it is a 9v DC adapter that works perfectly with pedals... Am I missing something ?
Then I tried to plug in the Line 6 M13 adapter like this one http://www.amazon.com/Line-6-PX-2-Power-Supply/dp/B0002PZEGS . This time it worked, but had some kind of bad contact: it works only when I press on the cable. This might be explained by the adapter though, since Line 6 adapters are a little bit thinner than the "standard" Boss ones. Could it be related to my first issue though ?
Last thing. Ideally i'd like my build to be as small as possible, so I was thinking about getting an Arduino Micro for the purpose. Is there a way to solder a DC adapter on the micro, or even better, to plug some kind of USB/DC adapter ? :)
Thank you very much !