The hardware is where this build becomes useful, and for that, [Erland] is using a sunlight readable Pixel Qi display. A Li Ion battery provides about 10 hours of runtime, and a Bluetooth enabled ...

Sunlight-readable display: View yardage to the front, middle and back of the green as well as hazards and doglegs on the bright, sunlight-readable 2.2-inch display. Larger text: Enhance the size ...