we found the pin 1 should be 3.3v from description of GPIO Pin Assignments, but I get only 0.75v via multimeter，What‘s the reason?
we found the pin 1 should be 3.3v from description of GPIO Pin Assignments, but I get only 0.75v via multimeter，What‘s the reason?
You’re comparing it to what ground?
use the Pin9 as ground, I have found the role cause that supply current is lower with using the USB port of my PC. It’s necessary for using 5v adaptor for power supply.
You are right，bro
