Any issues with doing it? Just wondering. Need to link a FIO and a mega over I2C.
Yes I know level conversion will be needed.
(the other end of the xBee link is a FIO & teensy2.0++ pairing..same deal there)
Any issues with doing it? Just wondering. Need to link a FIO and a mega over I2C.
Yes I know level conversion will be needed.
(the other end of the xBee link is a FIO & teensy2.0++ pairing..same deal there)
there shouldn't be any issues
level conversion will not be needed, just disable internal pull-up resistors and use external pull-up resistors that "pull" to 3.3V
frank26080115:
there shouldn't be any issueslevel conversion will not be needed, just disable internal pull-up resistors and use external pull-up resistors that "pull" to 3.3V
So the 5V signals coming from the 5V board won't overdrive the 3V3 pins?
magnethead794:
So the 5V signals coming from the 5V board won't overdrive the 3V3 pins?
That's why you use external pull-up resistors.
Doesn't make sense to me, but I'll go with it.
Research "open collector".
The I2C pins are open-collector. They need to be pulled-up so if you external resistors and pull them up to 3.3V they become 3.3V pins.
works for me.