I recently purchased Panda II board and experiencing problems with on-board LED and extended ports D20 - D51.
When I connected to Panda II board for the first time on-board LED was blinking. After putting 4.1.8 firmware on it , it stopped blinking.
I created the basic program that comes with default Panda II template that make on-board LED blink. When running it under debugger it steppes correctly but LED doesn’t blink. I connected Adafruit Protoboard and run the same code addressing LED to different pins - it worked perfectly.
Same thing with extended Panda II pins (D21 - D52) - they do not respond when basic pins do!
Is there anything else to do to fix it short of replacing the board?