I have set pins 2 & 3 on my Uno to be INPUT_PULLUP and digital.write HIGH to enable the internal pullup resistor.
I am sure it was working (but have changed the hardware and software), now it is not....
Putting a multimeter between the pin 2 and ground gives 1.00v
Going between pin 3 and ground gives circa 5v
If I digital-write low to pin 2 then it reads 0v
Is pin 2 now dead? (I was planning on using it as an interrupt)
Thanks for any help (this is my first Ardunio project)