Mudcat Café Message Lyrics & Knowledge Personal Pages Record Shop Auction Links Radio & Media Kids Membership Help
The Mudcat Cafeawe

User Name Thread Name Subject Posted
Richard Mellish Tech: MIDI Concertinas (7) RE: Tech: MIDI Concertinas 06 Sep 20

I am slowly trying to build a MIDI Anglo. I don't have the competence to program an Arduino or RaspberryPi, so I've bought a MIDI interface board.

I looked at Cherry switches but they are too big for the normal button spacing on a concertina, unless you do something complicated with two layers. So I'm using some much smaller switches and hoping they won't feel too different when I come to play it. (They have longer buttons than the one in the picture.)

I reckon I've cracked the push/pull aspect with a strain gauge and some simple electronics instead of bellows. It generates an analogue control voltage proportional (roughly) to the amount of force, and two outputs to enable two sets of relays according to the direction of the force, one for all the push notes and one for all the pull notes. Double-pole switches would be much simpler but I couldn't find any small enough. It will involve an awful lot of wires.

Post to this Thread -

Back to the Main Forum Page

By clicking on the User Name, you will requery the forum for that user. You will see everything that he or she has posted with that Mudcat name.

By clicking on the Thread Name, you will be sent to the Forum on that thread as if you selected it from the main Mudcat Forum page.

By clicking on the Subject, you will also go to the thread as if you selected it from the original Forum page, but also go directly to that particular message.

By clicking on the Date (Posted), you will dig out every message posted that day.

Try it all, you will see.