On Fri, 28 Nov 2008 09:00:01 +1030 Matthew Smith <matt@xxxxxxxxxxxxxx> wrote: > Quoth Ken Restivo at 2008-11-28 08:32... > > It's so simple to make one with an Arduino, and a lot of code for surfaces that others have made is open source. > > That could certainly be done - if you only wanted an 8-knob surface, the > ADC is already on-chip. I briefly toyed with the idea of using an > AT90S8535 (or the ATMEGA version), using the onboard ADC, but decided > that I wanted more knobs, so went for the external ADC. > > But yes, for the Arduino, just add pots and MIDI interface. > > Not sure what the performance of a device like this would be though, > when you have an extra level of language involved. Personally, I like > to stick to C when dealing with microcontrollers (and for the real > masochists, there's always assembly ;-)) > > Cheers > > M The code you use to program the arduino is a subset of C. As for speed, in an industrial application I have one reading 2 external interrupts which it uses as timing signals to pack the state of another digital input into bytes, and then spit them out via serial @ 115200 baud. I can get to about 80% theoretical maximum speed before it starts losing data. Provided you keep your code clean and efficient, I don't think you'd have any significant latency problems running MIDI :) -- Will J Godfrey http://www.musically.me.uk _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
