The HUD display itself is unchanged. A u-blox GPS module and ESP32 board were the keys to making a standalone device to display meaningful data on the Garmin HUD+ over Bluetooth, thanks to the ...

For just $129.99, the Garmin HUD unit is small, portable and can display navigation commands on the windshield (or an attached reflector lens) so the driver doesn't have to look away from the road.

The Garmin HUD is a very neat device, putting all your navigational info, from ETA, what lane you should be in, and distance to your next turn right on your windscreen in a heads-up display.