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

Olivier Baudu olivier at labomedia.net
Tue Jun 25 23:59:50 CEST 2013


Hi...

It's not really the subject because we didn't use Pd for the this 
version...
But we've done a piano player with 48 servo engine (HS-422 from Hitec) 
controlled by I2C with a 3 PCA9685 and a Raspberry Pi.
This one from Adafruit ( http://www.adafruit.com/products/815 ) can be 
used with an Arduino.

http://vimeo.com/54803321

Cheers

01ivier

Le 25.06.2013 23:23, Peter Venus a écrit :
> maybe this could help you.
> http://algo.mur.at/projects/microcontroller
> this is developed by winfried ritsch, who realised really fast
> responding automated pianos with these.
> 
> peter
> 
> Am 25.06.13 22:53, schrieb Charles Z Henry:
>> Are you sure you need PWM pins?  You'll definitely be paying for more
>> *duinos if you are just using those.  If I were you, I'd think of 
>> another
>> way to deliver a variable impulse to the hammers.
>> 
>> Chuck
>> 
>> 
>> On Tue, Jun 25, 2013 at 3:43 PM, Epic Jefferson 
>> <jeffreyconcepcion at gmail.com
>>> wrote:
>> 
>>> Hey guys,
>>> 
>>> I've had progress building an Arduino-powered solenoid system for a
>>> controlling a piano's hammer mechanism (removing the keys) via pd.
>>> So far I've found the solenoid I want to use. [image: Inline image 
>>> 1]
>>> Does any one have experience daisy-chaining arduinos (or arduino 
>>> mega's)
>>> to get more pwm pins, while using just one usb connection for 
>>> controlling
>>> via pd?
>>> 
>>> --
>>> www.epicjefferson.com
>>> 
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>> 
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-- 
"On ne peut pas vivre dans un monde où l'on croit que l'élégance 
exquise du plumage de la pintade est inutile. Ceci est tout à fait à 
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divertissement.



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