OpenHUDisplay

Ever wanted to have one of those fancycars with HUD for speed indication?

Now you can!Simply download this software andbuild a fairly simple circuit!

Source code and documentationavailable for free at:https://github.com/Djhg2000/OpenHUDisplay

Why OpenHUDisplay?

Based on off-the-shelf components- Which makes them easy to find

The software and it's source code is available- Completely free and easy to download

If you want to change it's behavior - You can!- Actually, you're encouraged to do so

If anything breaks you easily can fix it at home- No need to wait for tech support to find the issue

How it all works

You can connect a regular serial GPS through a MAX232 family RS232-to-TTL level converter chip or a GPS module with TTL signal levels directly

The PIC then captures and formats the data to suit your needs

The formatted data is then sent to the Futaba M12BY02AA VFD driver (or compatible)

The driver then mirrors the characters before they're sent to the VFD itself

Block diagram (hardware)

Additional features

Brightness adjustment through hex code switch

Optional automatic brightness settingis work in progress

Displays time as well as speed

DST setting through switch

Approximate cost to get started

A PicKit2 starter kit is recommended, however for the final circuit only the PIC16F690 will be needed363 SEK

MAX202ECPE RS232 transceiver (if RS232 GPS)54 SEK

Futaba M12BY02AA VFD167 SEK

Various components (switches, capacitors, etc.)~80 SEK

Total cost: ~664 SEK* = ~€72* = ~$95*

*Current prices from www.elfa.se, currency exchange rates may vary

JSP diagram (software)

Future of the project

Completely open source

Anyone with basic electronics skillscan build their own

Anyone with programming skillscan improve the code as they see fit

Useful links on next slidekeep your cameras and notebooks ready

Useful links

Source code and documentation:https://github.com/Djhg2000/OpenHUDisplay

Tutorials on SparkFun:http://www.sparkfun.com/tutorials/

Free documentation on NMEA0183:http://gpsinformation.org/dale/nmea.htm