Inclinometer, altimeter and compass for your offroading pleasure. Circuit board and parts list can be found here: https://github.com/camerontech/offroad-cpu-hardware
If picking up and assembling all of these parts yourself is a bit daunting, you can purchase a kit or pre-assembled unit here: http://store.camerontech.io/products/offroad-cpu
Documentation coming soon...
I use a bread-boarded version of the components while developing. master contains
the proper nav switch pins for my breadboarded version. led contains the real
production pin numbering. oled contains the same production pin number plus a
different library for talking to the screen.
So a typical development task will involve making changes to master. Once those
look good and are ready for production they are merged into led and oled and
will be burned onto the next set of production ATMEGAs that go out the door.