@adistuder Yeah! I was using C and kept having issues. CS pin wasn't toggling, so I switched to a GPIO and then that was working ok. Then the MISO pin was getting stuck at 2V, so I enabled a pull-down resistor 😂 Decided to switch to micropython to see if it made a difference. Once I figured out how to set custom pins I immediately got an "Invalid MISO pin" error. At least it's an easy bodge from GP4 to GP8 (and it's thankfully unused on my board)