I’m new to Raspberry Pi and am trying to run Pure Data on it to control a teensy 3.2 using Open Sound Control which in turn controls some stepper motors for a pump just like here https://github.com/DropletKitchen/pumpsn17 (using the teensy code and Pd files provided at the end of the page). I’ve finally managed to install Pd-extended on my Raspberry Pi 3 (Raspbian Jessie). But I don’t think Pd is able to use the USB to communicate with the teensy, since if I try to run the Pd file, Pd gives me the error “could not open device /dev/ttyS0: failure(13): Permission denied. Could someone help me please to get Pd communicating with OSC through my USB?
Also when I open Pd I get this message
/dev/dsp (read/write): No such file or directory
(now will try write-only…)
/dev/dsp (writeonly): No such file or directory /dev/dsp (read only): No such file or directory
Audio I/O stuck... closing audio
Do I need to do some further configuration to get Pure Data running properly?
Like I mentioned I am very new to using the Raspberry Pi so any help would be appreciated and please do explain anything as if I were an idiot. That would really help. Thank you.