aotfanburneraccount
Member
the above question sounds foolish because what else is the 5V pin for? but if i power a sensor's VCC and ground with 5V, its communication pins (trigger and echo) with output greater than 3.3V back to the teensy's GPIO pins, (i measured this from a voltmeter) This would go against the rule that you cannot supply greater than 3.3V back to teensy pins (except for Vin and Usb port)
This is correct right?
I did this and found smoke coming from somewhere. I think it was the sensor which I accidentally reversed the ground and VCC pins on, but it could also be from the teensy which was receiving greater than 3.3V in to its pin 11 and 12. i quickly unplugged everything but 5V power vs 3.3V power is something I wanted to clear up.
This is correct right?
I did this and found smoke coming from somewhere. I think it was the sensor which I accidentally reversed the ground and VCC pins on, but it could also be from the teensy which was receiving greater than 3.3V in to its pin 11 and 12. i quickly unplugged everything but 5V power vs 3.3V power is something I wanted to clear up.