16 to 2 Mulitplexer to Max MSP

[bharath088]

great job! so how do you get the serial data into Max/MSP?

[badbobbyhughes]

nice job. i'm not familiar with the arduino. So basically, when you send "76", the arduino cycles through all eight selection states on pins 2-4? can you control the speed at which it steps through the states? and can you adjust the A2D resolution on the arduino? and will it work with Pd the same as it does in Max?

[littlescale]

You can control the speed at which it steps through the pots by placing a delay(); command in the code, but currently it is just going as fast as it can (for the quickest response across the eight pots). The max ("default") resolution for the Arduino is 10 bits. But because this is sending MIDI control data, the Arduino shifts the analog to digital value left by three bits.

[littlescale]

If Pd supports a Serial object, then it is possible. Otherwise, it is also possible to send the data over a MIDI interface (with the right code on the Arduino). ;-)

[sorisos]

would it be possible to use another 3 pairs of 4021s for the analog in 3,4 and 5 on the arduino board? or are there any complications?

[littlescale]

i made a mistake in my movie info - the ICs i used a 4051 (8 to 1 multiplexer).

it should be easy to use, say, 6 multiplexer going into analog inputs 0, 1, 2, 3, 4, 5 and controlled by 3 digital output pins in order to get a total of 8 x 6 = 48 ins

[littlescale]

furthermore, it is then possible to connect the output of a multiplexer into the input of a multiplexer, essentially chaining them together. this allows one to have, say, 256 inputs connected to 9 x 4051s (8 of them connected to 1) and controlled by 8 digital pins.

etc etc.

[littlescale]

the only complication would be the sampling rate of the multiplexed inputs -- which of course goes down with the number of inputs and multiplexed inputs used in a system.

[messierishome]

how did you interface the multiplexer ins? with max? arduino2max? is it possible to see the patch?

[sant4d]

Hi can you could plz a give some explanation on it because I am studing types

IC

It was quite informative and very impressive

[littlescale]

Hi there,

If you look in the movie information, you can find some links at the bottom. Follow these links to find out more.

Let me know if you are needing any more info.

Cheers

[eclecticeye]

Very impressive man. I'm excited about using this idea with the sound installation I have planed :)

[littlescale]

yeah for sure. let me know how i can help, yeah.

[sqrpshr2]

Hello. What kind of multiplexers are those? Thanks for the video.

[littlescale]

just a pair of 4051. I believe they were CD4051. 8 to 1 analog.

[warpie]

cool, I've used Icube and CUI quite a lot but never Arduino..

[warpie]

owo thats cool, clever enough..can you change the frequencies instead of the amplitudes of each harmonic?

[littlescale]

Absolutely. It's just a matter of how you map it. The pots could be changing whatever. Visuals. Sound. Etc.

[TutorialsGuide]

WOW.... This is increadible nicence sound. Congrats

[littlescale]

Thanks.