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

[FernandoG]

Hi guys

I was researching about arduino mega and pd firmata and i found a post where
they say that its not posible to use all digital output and analog inputs of
arduino mega. http://arduino.cc/forum/index.php?topic=62256.0

I gona buy arduino mega this week, but i need all inputs-output working for
my proyect. Do you know something about this incompatibility??

thanks

2011/6/3 FernandoG <dataferx at gmail.com>

> 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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>>
>>
>>
>>
>>
>>
>> ----------------------------------------------------------------------------
>>
>> "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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