Hello,
I’ve purchased several of the V3 boards. One of them I’m wanting to set up an external notification device. As with my other boards, I’ve flashed it with the latest Meshtastic Beta firmware. That being said, while exploring voltage level output (both 5V and 3.3V pins), i discovered that the ground pins checked positive and both 5V & 3.3V pins checked negative. Voltages and polarity were checked with three different VOM’s, one being a Fluke model. Of course I can work around this, I wonder why this is happening.
Second, when checking output of the four GPIO pins available, I found the published pinout diagrams not to match then silkscreened and labeled numbers on the backs of the board(s).
Can anyone offer some insight regarding the polarity issue and perhaps offer a link to an accurate diagram on line?
Thank you,
C.L.
