[PD] control lot of audios files with arduino + puredata

[FernandoG]

Thanks guys, first i will try the easy way, arduino mega.

best!

2011/6/3 Hans-Christoph Steiner <hans at at.or.at>

>
> I think people have done some shift register+firmata things, but nothing
> got integrated into StandardFirmata/  Here's an example:
>
> http://www.makingthingsmove.org/blog/
>
> .hc
>
>
> On Jun 2, 2011, at 1:02 AM, Martin Peach wrote:
>
>  It's certainly possible to make a Pd patch that controls shift registers
>> through firmata. It's also possible to program the Arduino to do that and
>> send the switch numbers to a Pd patch that has a [comport] in it.
>>
>> Martin
>>
>>
>> On 2011-06-01 22:33, FernandoG wrote:
>>
>>> Thanks for answer
>>>
>>> Martin: I am researching about shift registers, but if the idea is to
>>> use puredata to control audio playbacks, thats means that i need to
>>> control shift registers with pd? because the arduino will be flashed
>>> with pd firmdata and will be imposible to upload code to control shift
>>> registers, is that posible or i am thinking wrong?
>>>  Thanks again
>>>
>>> Best!
>>>
>>>
>>> 2011/5/30 Martin Peach <martin.peach at sympatico.ca
>>> <mailto:martin.peach at sympatico.ca>>
>>>
>>>   On 2011-05-29 23:20, FernandoG wrote:
>>>
>>>       Hi
>>>       i need to design a sistem to control 40 diferents audio files and
>>>       playback in a stereo sistem. I was thinking to use puredata and
>>>       arduino,
>>>       load the 40 audios in a pd patch and use 40 switches and
>>>       resistors into
>>>       some arduino inputs to trigger and playback any of the 40 audios
>>>       in pd.
>>>       Every switch will be conected to a diferent resistor to  generate
>>>       diferents voltages then arduino inputs can diferenciate witch
>>>       audio to
>>>       playback. Also i need to power on a led any time a specific audio
>>> is
>>>       been playback. The 40 audios will not be playback simultanusly, but
>>>       probably al least 15 or 20 could be.
>>>
>>>       Anybody knows about a similar proyect? can i use analog input to
>>>       control
>>>       various samples or its not good idea? multiplexors? do i need to
>>>       use an
>>>       arduino mega or its not necesary?can i power 15-20 led
>>>       simultaneously?
>>>       the best way to do this system stable for long long time?
>>>
>>>
>>>   The analog input method is similar to the resistor ladder that
>>>   analog synthesizer keyboards used. Arduino analog inputs can
>>>   differentiate 1024 levels but the values of resistors are usually
>>>   5%, but 40 levels should be easy.
>>>   The best way to do LEDs is with shift registers. That way you can
>>>   use just 3 pins on  the Arduino to control as many LEDs as you like.
>>>   For LEDs use parallel-output shift registers, like the 74HC164. Also
>>>   the input could be done with parallel-load shift registers (for
>>>   example the 74HC165), but the resistor method is cheaper.
>>>   It should be quite stable over time.
>>>
>>>   Martin
>>>
>>>
>>>
>>>
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>>
>>
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>
>
>
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>
>
> ----------------------------------------------------------------------------
>
> "Free software means you control what your computer does. Non-free software
> means someone else controls that, and to some extent controls you." -
> Richard M. Stallman
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