3V3 digital signal to the cRIO

[Tem1514 Mentor]

Originally Posted by sst.thad

Yeah they include a 10k Pullup to 5V inside the sidecar.

Here's the schematic.
http://www.usfirst.org/uploadedFiles...matic%20v7.pdf

Thank you sst_thad I forgot about the 10K inside the sidecar. Using the MPSA transistor will work just fine in an open collector configuration to change the Pi 3.3 V to the cRIO 5 V level.

Just as a side note, I have a 5 volt micro computer stand alone system that is used to drive an 'H' bridge that runs at 24 volts with no problems handling the two voltages.

As long as you use the transistor between the Pi and Digital side car no problem as the transistor will act as the buffer between the two.