Hi all,

I need to get a Raspberry Pi to convert GPIO input from a photoresistor (LDR) to MIDI data, and then use that MIDI data to modulate an instrument running in Csound on the Pi.

Could anyone point me in the right direction about how to do this? Any existing examples, perhaps?

The goal would be to have a sound file playing on the Pi via diskin2, and to have amplitude controlled through MIDI aftertouch values, which would be dictated by light intensity from the LDR.

I'm thinking this would be the best way to do it, but would be grateful for any simpler methods to achieve the same thing.

Any help greatly appreciated!

Mark.

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Hi Mark,

reading with Pi's GPIO won't work. LDR and some resisor + voltage needs ADC. There are surely plenty of those made for PI to connect to GPIO or I2C etc.

A simple solution could be Arduino + Pi. I've used that kind of hack sometime.

-m

Hi all,

I need to get a Raspberry Pi to convert GPIO input from a photoresistor (LDR) to MIDI data, and then use that MIDI data to modulate an instrument running in Csound on the Pi.

Could anyone point me in the right direction about how to do this? Any existing examples, perhaps?

The goal would be to have a sound file playing on the Pi via diskin2, and to have amplitude controlled through MIDI aftertouch values, which would be dictated by light intensity from the LDR.

I'm thinking this would be the best way to do it, but would be grateful for any simpler methods to achieve the same thing.

Any help greatly appreciated!

Mark.

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here