[TriEmbed] Raspberry Pi GPIO

[Grawburg]

I will never attach anything that even looks or smells like it could send current back to the RPi by connecting directly to the GPIO. I just crapped out a Pi while working with a stepper motor, and I'm not really sure how.  I was trying to set up a transistor to switch the power on/off to the control board (the Enable option still allows current to the motor) and something happened that fried the Pi.

If I can't fully isolate the Pi with a logic level shifter or I/O port expander I don't think I'll try to hook up a project. And I'm sure not going to use a transistor without a shifter.


Brian Grawburg