[PD] electro-mechanical piano (player piano) - Arduino, Solenoid Issue

Alexandros Drymonitis adrcki at gmail.com
Wed Jun 26 20:26:53 CEST 2013

Dunno if it helps, but I messed around with multiplexing and arduino some
time ago and finally got it to work. You can check the arduino sketch and
pd patch here
This is only for reading multiplexed pins though, not for writing, but I
could use it to light LEDs one at a time sending a number from 0 to 15 to

On Wed, Jun 26, 2013 at 9:00 PM, batinste <dwanafite at yahoo.fr> wrote:

>  That is one of the many cases where my advice would be : don't use
> firmata/pduino. Program the arduino for real. Use a basic custom protocol
> over the serial link, and talk to the arduino with [comport]. You'd spend
> much more time trying to get it to work with firmata/pduino than
> programming the 'duino and let it do the real work instead of clogging your
> serial port.
> On 26/06/2013 16:56, Epic Jefferson wrote:
> Charles Z Henry & batinste:
> I need the project to be pd controlled, i could try multiplexing but i
> haven't found info yet on how to control multiplexed pins via pd.
>  Peter Venus:
> i've been in contact with Winfried, and was about to purchase one of his
> older systems but haven't heard from him in a while. Working on plan B.
>  Olivier:
> that was good work but again, pd is a must and servos are extremely loud.
>  Charles Goyard:
> i've been able to control solenoid velocity with pwm via pd, this is also
> how Winfried does it. Also, motors are way too loud, as I told Olivier.
> That's why i'm investigating daisy chaining the arduinos, i'm basically
> emulating Winfried's system, but replacing his Escher micro-controller with
> arduino Mega's.
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