@Dobromir That's promising, I had the same output for infraredRemote. I still need to finish calibrating which I plan to do this weekend but I think it's going to work as expected.

Apparently I'm not following the manual the right way. Chapter 5.3.2 tells me to go into calibration mode, but to do that I need to follow the instructions of chapter 6.1.2 and upload writeinstinct.ino. Although the EQ button still does nothing I can calibrate the servos by following the guide in chapter 6. @Rongzhong Li I can make a video of the serial output and behavior but I'm unsure for which sketch: WriteInstinct, OpenCat or testInfraredRemote? I'll continue following the guide chapter 6 and calibrate with the help of the serial monitor for now. @DobromirI did not edit any .h file yet but since testInfraredRemote.ino works I continue following the guide for now. Thanks for the suggestion.

OK, so I should not have uploaded opencat.io yet. Should I reset the board? How do I make the EQ button on the remote let the servos rotate to their calibration angles? Pressing the EQ button still does nothing...