So its always nice to start off a project with a nice fat failure. It would have only taken 10 minutes to compile the DWM1000 library for the pic I chose to see if it would fit in its program memory and of course I waited until after I made the board to see if the code would fit.

Fortunately didn't populate the expensive hard to desolderer radio module yet but I had to look in my micro-controller drawer to see what else I had.

I was a in a bit of a hurry for this design because my sister was going to China for 2 weeks and I was trying to get the trackers made in just a couple of days so she could see where in the house the cats where on her phone.

Anyway after looking through what I had on hand a ATSAMD20 seemed appropriate for the next attempt.