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by spike021 2279 days ago
I'd love to build a HUD for my Subaru BRZ like this, but using some kind of HUD. Even just as a speedometer. But I'm not really able to solder/do much wiring since I have hand tremors. It'd be sweet, though.
4 comments

I imagine soldering with tremors is doable with some sort of flexible arm set up to hold the soldering iron. Something like this: https://www.fullcompass.com/prod/541073-aladdin-eye-lite-cla...

I did a lot of soldering as a microwave tech, and used a setup like that just for convenience. I have to have a magnifying glass on a similar flex arm because my eyes are so bad. I suppose there are still some hard parts, like trying to use braid to remove solder, but I bet you can do it.

I have a 1991 Mitsubishi Galant VR4 that has a place in my heart that your Subaru seems to have. Cool family compact with 4WD and 500 oversized, at the wheels, turbo HP.

You could definitely achieve something like that with a solderless breadboard, and a raspberry pi with some breakout boards! Maybe an external USB or HDMI display?

I wonder if you could use something like this [0] and feed info from the pi over OBD using some sort of OBDII breakout board or OBDII <-> USB device.

[0] https://www.aliexpress.com/item/32966911948.html

So just point the screen up at the windscreen and use the reflection as a HUD. You'll need to source a very bright screen for daytime use, just as with any HUD.
It’s probably easier than you think. I bought all plug and play stuff for the RPi, and car wiring is thick gauge and easy to handle.