To make a custom board on 40pin header, I tested drawing
20 mA from pin 2/4 of J12, 40 pin header. I connected 220 ohm
between pin 2/4 and 6 and measured the voltage between
those two pins. It was around 2 V, not 5 V. How can I use
5V pins of J12 correctly?
Thanks in advance for any suggestions.