Hi guys!

I finally got my Pd Vanilla installed. The patch that I wrote on a regular windows 7 it's now working properly on my raspberry Pi .

It's an audio patch based on mute buttons, Right now the buttons are controller via my "mouse's left button", My goal is to have all the mute buttons controlled via an external instalation.

If you take a look into this:

The main ideia is:

• everytime that, with your hands, you touch in the red conector and in one of the green conectors you will be unmuting one specific track
• if you will have two persons, each one of them touching the same red conector (since there is only one) and each one of them touching in a different green conector you will have two track unmuted

does it make sense?

Any suggestions to help me on these?

Thanks a lot in advance!

Cheers from portugal

@davidborrao You might need to look at the raspberry forum to know how to wire the pins for that... drain current etc. Then you will need wiring-pi...... http://wiringpi.com/download-and-install/ ...... and then use [comport] to communicate with Pd..... https://forum.pdpatchrepo.info/topic/9997/gpio-raspberry-p3-and-pure-data

A quicker, easier, and maybe cheaper route would be to use a cheap android tablet with something like ...... https://hexler.net/software/touchosc ...... which is available for ios as well if you have an apple device already.
You can make your own controls and talk to Pd wirelessly (Wi-Fi dongle needed for the Pi of course)using OSC or Midi.
It will allow you to adapt your patch easily to other requirements as you go...... (volume, re-start track, select track, pause...... whatever you can imagine.....
David.

This sounds like you need to create capacitive sensors from these metal surfaces. The CapacitiveSensor Arduino library might be helpful here, although if you use it, people will only need to touch (or just approach) one metal surface, without needing to be touching another one (which is probably grounded).
Check the library here https://playground.arduino.cc/Main/CapacitiveSensor
Otherwise, what you want to do is easily done with a MakeyMakey, which acts like a keyboard, which in Pd you can get with [key].
No idea how you can achieve what you want only with the Pi. This Sparkfun tutorial might be helpful though https://learn.sparkfun.com/tutorials/raspberry-gpio

@whale-av thanks alot!

Can you give me an example on how to use [comport]? imagine for example that I want to analyse the value of drain voltage on GPIO5?

My idea is, its voltage is zero Volts and then I will send something to it, and that will unmute the track. Do you understand?

@davidborrao Use the help file for comport (right click the object..... then help) and click [devices( to get a list of available ports on the RPI.
But I have misled you..... comport can be used to send and receive data on the gpio serial port pins.

What you want could be done in python. The pin states can be retrieved with digitalRead([pin] ...https://learn.sparkfun.com/tutorials/raspberry-gpio
and you would have to write some code to send the info through a local port to a [netreceive] object in your patch.....
There is some help with that here....... https://guitarextended.wordpress.com/2012/11/03/make-python-and-pure-data-communicate-on-the-raspberry-pi/

There is just a chance though that you could make this work......... http://nyu-waverlylabs.org/rpi-gpio/ by compiling it for your rpi. There is a readme in the download about compiling.
If that works it would give you direct read and write access to the pins without Python, and be by far the easiest solution.

David.

hi guys!

I'm still stucked on this !

I realized that I will need analog input and so I plugged an Arduino Uno R3 to my raspberry. I thought it would be easy, but it didn't!

I already tried many possibilities but I still dont get the values from the arduino analog inputs, can anyone help me again?

Sorry for al the mess

I already tried with pduino | arduino-test.pd. But since the port is dev/ttyACMO, I don't know what I should select :(

I suggest you try the Arduino CapacitiveSensor library and use its example sketch. You can then easily interface it with Pd using [serial_print] from here https://github.com/alexdrymonitis/Arduino_Pd
Make sure to read the Arduino sketch from Arduino_Pd to correctly print to the serial line, so that Pd can understand what it's receiving.