I've designed a patch on OSX, it successfully runs on raspbian pi. Accept the lights of a fader on designed for the monome grid interface won't light up? Why would this happen when Other lights do light up when expected? Heres the patch if its required: https://wetransfer.com/downloads/596c2114613328e175388c01f207b49f20190424121908/3db3a0

@Fauveboy Must be something to do with comms.
Order of midi ports?
IP address for OSC not the same?
David.

… well perhaps but what is also confusing is that the same col will still turn the volume up and down, so the pd patch knows the grid interface is there, just no feedback from the leds? it looks like so atm:

@Fauveboy Is it a USB device? Not enough power from the RPI unless you use a hub?
Seems unlikely that the problem will be with Pd.
David.

I would check the midi settings in Pd to make sure the midi out put is going to the right interface. Depending on the RPi operating system sometimes midi settings and connections are hard to set up.

@nicnut its communicating with osc via serial ports? would this have settings that need to be looked at ina similar way?