[Mark McLeod]

Originally Posted by timytamy

On the diagram under the custom electronics port, it shows that the DIO has been pulled up to 3v3, implying that it uses 3v3 logic levels. Could you clarify, what logic levels does the RoboRIO use on both the main IO and MXP port? I believe I saw a voltage selection jumper on some alpha pics, implying that voltage is selectable, does this work and does it affect both the main-IO and MXP or just one?

Here's the jumper. The DIO power is 5v by default.

Also your MXP pin-out is out of date. It appears that the roboRIO will get a different configuration to the myRIO (https://decibel.ni.com/content/docs/DOC-30419)

Thanks, I updated that diagram.