|RejsaRubberTrac RejsaRubberTrac - Build thread, RX7 FD3S||535 besök totalt|
Hello all, thought I'd share my build with you all.
As I write this I've already done quite some work/research.
But first, my goals:
- I don't want to think about batteries. ever. so I'm wiring it in.
- I do want to be able to replace lens covers.
- For ideal sensor location on an RX7, it needs to be under the front guard. That means I need a way to have replaceable/cleanable sensor covers.
I wish it was as easy as the BMW M2, but nope .
The sensor I think should be placed over the top of the tyre; minimizing distortion from steering travel or "aiming". By "aiming" I mean pointing the sensor at the tyre from a location that isn't direcly above said tyre..
So I've *tried* to get it above.
Mine isn't perfect. And *after* I got 55/60 deg sensors I realized I probably want 120deg. But ohwell. *something* is better than nothing.
So for now I'll run sensors almost directly above the tyres; in a custom mount.
These feed to the adafruit nrf52's on the passenger side (fronts only for now).
I'm driving it all with a simple buck converter. 12-14.4(-ish) v down to 4,127v into the adafruits.
Pics, or it didn't happen right?
I used magic unicorns (photogrametery) to help me build the sensor model. It looks like this: https://www.dropbox.com/s/tvzu999n3k
Here's 2 x nrf52s and a buck converter.
I run wires from the sensors; through the firewall, to somewhere in the cabin.
You can't see it, but the writing on the case says "in case of emegency, pull!"