atmel 7 I believe. Powering mk board via usb. Getting MOSI error saying the data line isn’t open or some such thing.

update2: success programming! Feedback with norns! Now to program the mk64 :slight_smile:

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What was it? Out of interest or anyone else with similar problem :wink:
Too good when get feedback from Norns!

Well, not sure. I did pull the driver boards. I think serialosc was running one instance. Shutting it down and restarting everything seemed to work. Fingers crossed for my 64+8 (led fader encoders for sending midi ccs)