On Thu, Jul 03, 2014 at 01:58:02PM -0700, Len Ovens wrote: > On Thu, 3 Jul 2014, Fons Adriaensen wrote: > > >It all seems a nice idea, but OTOH you can get a Yamaha motorised > >fader for 20 Euro, see > ><http://www.thomann.de/it/yamaha_ls_901vmotorised_fader.htm>. > > > >I wonder if you can get and assemble all the required parts for > >a usable 'belt fader' for that price. > > That is about the same price I was looking at for motor faders to. > But... that is not the whole story... You need also the driver for > the motor, a touch sensor so it knows you are controling it and > don't burn the motor out trying to go against your movement and you > also need an analog in port. Also needed is the circuitry to receive > the virtual fader position from where ever and apply it to the fader > logic. SO the fader is $20, but the whole price is closer to $50 I don't think so. You need an 'H-bridge' for each motor, an LN293 (IIRC) has two of those and costs around 2 Euro. Then you need an AD converter which can be multiplexed and doesn't need to be very high speed. Something with 8 channels, 12 bits will be less than 1 Euro per channel. Then the touch sensor, again this can be done for around 1 Euro per channel. All the rest you need anyway, or can be SW. So a pessimistic guesstimate would be 25 Euro per fader. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
