MK3 High Altitude Balloon tracker
Launch a high altitude balloon at EMF 2018 using a badge tracker.
Tracker parameter setup app (done)
Get timer working for RTTY transmission interrupt (done)
Get SPI working with RMF22 for transmitter (or give up and use an NTX2B)
Get UART working for GPS
Boot directly into tracker code (see USB mouse app code - similar idea)