I keep getting 5v out of my 3.3v Pin.
Just discovered it when I tried to run my temp sensor off 3.3v because its supposed to be less noisy.
Code and scaling didn't make any sense.
I tried powering my UNO with both the USB and a AC to DC converter and got the same result.
Any Ideas?
Short on or off the board? The FTDI chip is damaged?
"Short on or off the board? The FTDI chip is damaged?"
Not sure how I would know this...
Doesn't Uno have separate onboard 3.3V regulator, there is no FTDI chip to create 3.3V?
While powered off: Use a multimeter and measure between the 3.3V pin and the 5V pin and see if they are shorted together.