The HUD software currently integrates with the RS232 data output from my MGL G3 Challenger (as seen in my pictures below) with options for several other EFIS systems if desired.
In the hardware picture below along with the Epic Optix HUD (and its custom RV8 mounting hardware) is our OnSpeed M5 AOA Graphics Display. The HUD software will shortly be able to process 2 data inputs so I will be able to remove the M5 display as all the critical OnSpeed data (AOA etc) as well as my Efis data will integrated together into the HUD display. The HUD graphics display picture shows a recorded flight data playback of a GPS ARNAV approach and my HUD alignment procedure. The alignment was accomplished starting with a level RV8, then using a laser to position a FRL target out in front of the hangar physically aligned with the HUD, then physically adjusting the HUD (left/right is fixed, elevation is adjustable with friction knobs) using its graphics display with the FRL (Fuselage Reference Line) target. The current Graphics is loosely based on the F18 HUD design, but our open source software project will allow users to create or modify any HUD graphic design they would like and to share their creativity with other users. Each HUD software display piece is designed as separate module that can be added and positioned to a HUD design. Since different HUD systems also have different Video (Pixel) resolutions this Graphics box can also also be input as part of the overall HUD graphics configuration. The 3rd picture shows the small size of the raspberry pi computer mounted on a swing open avionics panel inside & under my RV8 dash. I have a MGL EFIS (+G430W) currently integrated with the HUD computer. The Localizer/Glideslope works really neat on the HUD through the MGL Efis. The MGL provides a large amount of Efis data that can be selected for use by the HUD system. Part of the challenge in HUD design is only displaying critical data and not cluttering up your HUD.
Anyway the software continues to evolve and hopefully will remain that way. We invite MGL users who are interested in helping with software or who just want a HUD to join our project. Epic Optix has offered a discount for their Eagle HUD to folks helping with this project and I also have several HUDLY HUD's that I can sell to HUD developers (the HUDLY is used in the MGF HUD for only $25K)
Send me a PM if your interested in helping with this HUD project.
Cecil