Bare 6-9
Bare 6
2: 8 V strikes me as big. I mean we have 5V to work with. But I may be wrong here. The MCU is only have 3.3 V so with that reasoning our result is wrong too.
4: The same with 7.75 V.
6: This describes how it works really well.
Everything looks good. I don't really know if 8 V and 7.75 V is wrong or right.
Bare 7
Looks good.
Bare 8
Looks good.
Bare 9
Looks good. I'll will try to use block! and see if it fixes my problem.
Note: I could not run any code and check. I have left a USB cable at LUDD and can't run the MCU without it. I may have covid so I can't go and fetch it.