The TLC5940 or TLC5941 PWM ICs have 16 channels of 12-bit resolution, and can be daisychained for more channels. They are supported by a library for Arduino. Although they are usually used for LEDs they also work for servos or general PWM.
Martin
On Sun, Jan 24, 2016 at 5:09 AM, Simon Iten itensimon@gmail.com wrote:
yeah it is. but be aware (once more) that one very high pwm frequencies you will loose some resolution.
On 24 Jan 2016, at 01:11, Christof Ressi christof.ressi@gmx.at wrote:
Thanks for pointing me to that! Turns out to be really easy:
http://playground.arduino.cc/Code/PwmFrequency
Gesendet: Samstag, 23. Januar 2016 um 12:34 Uhr Von: "Simon Iten" itensimon@gmail.com An: "Christof Ressi" christof.ressi@gmx.at Cc: Alex x37v.alex@gmail.com, "Ricky Graham" <
rickygrahammusic@gmail.com>, "pd-list@lists.iem.at" pd-list@lists.iem.at
Betreff: Re: [PD] converting incoming audio/voltages into CV for
Eurorack modules
are you aware that you can increase the pwm frequency considerably?
still less for 9 10 11 but far higher then by default for all pwm pins.
On 23 Jan 2016, at 12:09, Christof Ressi christof.ressi@gmx.at
wrote:
I'm right now controlling an analog synth via Pd :-). I'm just using
an arduino - works well. It depends how many CV sources you wanna have, though. Generating trigger signals (e.g. for envelope generators) is really easy because you can directly use the digital outs. CV for modulation is a bit more tricky because you have to smooth the PWM outputs of the arduino with low pass filters. I found that using two RC circuits in series (with C = 1 microFarad and R = 3,3 kOhm) works decently for pins 5 and 6 on the Arduino Uno (pins 9, 10, 11 have a lower PWM frequency and therefore might need a lower cutoff frequency). I'm thinking about trying out some multichannel DACs with 10 or 12 bit because PWM on the arduino is only 8 bit. DACs also operate at a much higher frequency so smoothing would be much easier.
Gesendet: Freitag, 22. Januar 2016 um 22:24 Uhr Von: Alex x37v.alex@gmail.com An: "Joe White" white.joe4@gmail.com Cc: "pd-list@lists.iem.at" pd-list@lists.iem.at, "Ricky Graham" <
rickygrahammusic@gmail.com>
Betreff: Re: [PD] converting incoming audio/voltages into CV for
Eurorack modules
Ahh cool, yeah, I saw that page but only quickly scanned and found no
info where to get the hardware, the place it links to has this at the top of the page:
"Update 25 November 2014: software link below; stay tuned for hardware
info"
ha.. I just emailed Andrew directly. Thanks!
On Fri, Jan 22, 2016 at 12:32 PM, Joe White white.joe4@gmail.com
wrote:
Hey Alex,
https://code.soundsoftware.ac.uk/projects/beaglert%5Bhttps://code.soundsoftw...]
I think they're working out a kickstarter campaign to be released soon!
Cheers, Joe
On 22 January 2016 at 18:07, Alex <x37v.alex@gmail.com[
x37v.alex@gmail.com]> wrote:
Hey Ricky, I've done some major google searches and have yet to find where one
can get this Audio cape [bela?]. Can you point me to it?
Thanks,Alex
On Fri, Jan 22, 2016 at 8:58 AM, Ricky Graham <
rickygrahammusic@gmail.com[rickygrahammusic@gmail.com]> wrote:I’m using the Beagle Bone Black with Andrew McPherson’s Audio Cape + Martin Roth’s “Heavy” (enzienaudio).
Works great.
Message: 1 Date: Fri, 22 Jan 2016 15:29:38 +0000 From: "Pagano, Patrick" <pat@digitalworlds.ufl.edu[
pat@digitalworlds.ufl.edu]>
To: "pd-list@lists.iem.at[pd-list@lists.iem.at]" <pd-list@mail.iem.at
[pd-list@mail.iem.at]>
Subject: [PD] converting incoming audio/voltages into CV for Eurorack modules Message-ID: <1453476580193.32310@digitalworlds.ufl.edu[
1453476580193.32310@digitalworlds.ufl.edu]>
Content-Type: text/plain; charset="iso-8859-1"
I would like to hear how people may be converting incoming audio into
Control Voltage for eurorack use.
This year i indulged in building a eurorack synthesizer and i would
like to start using some interesting libraries i have found in pure data to control my synthesizer but i want to do it elegantly.
For example: I am trying to make a Fractal CV generator with pure
data. I am using Ben Bogarts "Chaos" libraries and i am hoping for some ideas on how to convert the streams of data into usable CV outside the box,
Patrick Pagano B.S, M.F.A Audio and Projection Design Faculty Digital Worlds Institute University of Florida, USA (352)294-2020
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