On Fri, Aug 14, 2009 at 10:19:25PM +0100, Folderol wrote: > On Fri, 14 Aug 2009 22:43:15 +0200 > Arnold Krille <arnold@xxxxxxxxxxxxx> wrote: > > > On Friday 14 August 2009 21:59:53 Ken Restivo wrote: > > > It sounds great. Now I'm either going to hack together an auto-wah via AMS > > > or something and an envelope follower, or build myself an Arduino pedal > > > footcontroller. > > > > Get a footcontroller or control it from the keyboards modulation-wheel (if not > > used otherwise). Auto-Wah sounds crap. > > > > Arnold > > Nonono > Building an Arduino footpedal will be much more fun :) > > Hmmm. > Instead of a pot on one of the analog inputs use a cheap shaft encoder > and count pulses. > This sounds intriguing. Right now I have an Arduino, and the reason I haven't used it is because I tried hooking it up to a volume pedal and the noise was so intense it was spewing out MIDI messages constantly... unusable. I had considered rigging up a passive analog LPF, or maybe doing some smoothing in software on the Arduino, but ran out of time/patience. What would be involved in fitting this kind of encoder to a volume pedal? I can find guitar-style volume pedals easily, and they're cheap. The advantage is that I could use a very cheap ATTiny2313 with no ADC instead of an ATMega Arduino. Encoders sound like the way to go. > Double Hmmm > Fix it so that the index pulse is at exactly the halfway point in the > travel, and it will 'silently' re-calibrate itself every time you pass > throgh that point. > I don't know what an "index pulse" is. If you could point me to some good introductory reading material on dealing with encoders, I'd find it very interesting indeed. Thanks. -ken _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
