[JohnC]

Hmm, can you upload the file so the CD task force can take a look?

This is probably obvious but make sure the serial cable remains plugged in...

In the meantime, try copying and pasting the IFI warm-up printf call into Teleop() and commenting out all others.

Is it ONLY your printfs that don't work? That is, your robot still does the hokey pokey and everything, it just isn't showing serial feedback?

P.S. I'm in Tacoma! See you at PNW? Tacoma for sure though!