[PD] control voltage
rodney at atr.jp
Fri Dec 10 02:52:49 CET 2004
My pick for this kind of job would be this box by Angelo Fraietta :
it has a lot of analog and digital ins and outs and the connectors are
compatible with the i-cube sensors etc. The "Dumb Controller" can be set
up via MIDI from your computer using a Max-like "boxes and wires" language.
The "Smart Controller" has its own CPU and can be used at gigs and in
installations without a PC.
The price is cheaper than most other boxes, I've seen.
ATR Media Information Science Laboratories
From: pd-list-admin at iem.at [mailto:pd-list-admin at iem.at] On Behalf Of Martin
Sent: Friday, December 10, 2004 2:20 AM
To: pd-list at iem.at
Subject: Re: [PD] control voltage
> hi all,
> is there a way to read control voltage output in pd using a soundcard?
> what object should i use with adc~? can i simply plug the CV (maximum
> of 6 volts) to my soundcard or i need to buy an analog to digital
Soundcards usually are capacitively coupled to their inputs, so the response
drops off as the frequency drops below a few cycles per second, leaving no
response at all for DC, which control voltage mostly is. One way around
would be to pass the CV through an analog multiplexer that was rapidly
switching between your CV and ground. If you know how to do electronics a
bit you could use a 4052 analox mux and a 555 oscillator running about 1kHz
to switch it.
I would go for a PIC16F88 microcontroller, which has 7 10-bit ADC channels,
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