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No idea about the purple but the yellow one either goes there or beside it

You're crazy! When it's designed i will gladly get you to make them for me - i'll give you the £60 for them :D ​

It's hard to gauge the size of the market though, I can't see these costing much under £200 to be honest - the connectors alone are mad money. Saying that, i paid more for my old fastchip XRD and i was happy to, that was much simpler too.

Thanks for the feedback. Fair play for going freelance - are you specialising in any area? I have still to speak to my university about it but I'll be making sure what i do remains mine. I might market it for a while if the interest is there. As part of my plan the first run would be 10 or 20...

Ok, here's my intentions for this: There will be a plug-in box that connects to the OBD port via cable and and also the radio/display. You will disconnect the display from the radio and plug it into this box, the box will connect back where you removed the plug. With the OBD cable connected...

Not much change. I'm hoping to talk to a supervisor in university about taking this on as my masters project which will mean time to spend on it and will also mean it would be well documented.

Somebody said (somewhere) that one of the adapters could be preprogrammed but I haven't seen anything displaying anything exciting

Yes. If you look at my vid with the info on the display it shows the supported pids

No these will only work if you're not using the standard stalk or radio

I still am but i have no time at the minute so no updates. I did find a mistake in the little boards so i think i might just sell them off as preprogrammed static displays for anyone that wants them. Still haven't managed to even get one working yet though...maybe at the weekend

I'm not sure, the manual says that anything 6xxx is ok once you have the rst and cal files so i'd guess so I bough secondhand so i don't think that entitles me to a map from them. The manual covers whats safe to change and what isn't

When i got my rstuner off an extrememly dodgy chap on here he sent me some 6400_5E01 files which i put on my 172 that had 6500_2A08 on it. If anything it seems to run slightly worse now - the idle is a bit rough. Before i stick my backup on it can someone send me a different version to try? I...

I'm not using bluetooth but yeah to the rest!

If it's not readable via obd you could add a seperate sensor

Hardware doesn't require anything special, any arduino or similar would do. I did have it running on an attiny (as in the boards above) but it's not working now. I started a new job this week so haven't had a second to look at it so I've no idea what's wrong.

There is no guide, certainly not a basic one! What ecu?

Test board

The plug holds the ashtray up? thats a bit stupid!

"somewhere behind the radio" is as far as i've got on making that decision! The annoying thing is that i don't think you can get any sort of obd cable to fit with the ashtray in place which is a pity

The final units will allow you to switch between radio and OBD display via the stalk

The bathroom is above my office/lab and we had a blockage. I poured a couple of litres of drain cleaning acid down not realising it was leaking downstairs so it came through the ceiling and made its way everywhere. Laptop and a few random bits spent a few hours in acid so aren't working too...

In case anyone is watching this thread waiting for anything to happen, my electronics lab has been flooded (again :@) so I'm having to put everything on hold

What I'll do is sent the boards out on the condition that people will send them back if I need to make any code changes. The final board will read all the standard obd pids that are available.

They'll be preprogrammed and I've included facility to read battery voltage I'm not sure what they'll say/do yet The boards just arrived but I see I only have enough components to make 3 up, I'll need to get ordering

These are just dumb boards that connect instead of the radio so if you have the standard radio you'd loose the display and remote for as long as it's connected. It'll need wiring to 12v power.

Yeah I'll share when I have it written up, it's all over the place at the minute. I'll have a couple of test boards shortly that will send data to the display so I'll be looking for guinea pigs to give it a good test as I've done minimal testing.

None of it is serial comms, it seems to be a unique protocol with a clocked data line but there is also a third wire too. I've been calling it i2c but thats not what it is. Theres a couple of bytes to initialise the display then you can send the bytes for the characters with the header. I...

I will share everything when I'm happy with it but if you have any specific questions I'll try to help.

I've been working on the hardware end and how to get it working the way I want. I've managed to sniff and decode the stalk control signals between the radio and stalk but haven't figured out how to read the commands myself. I've pretty much completely reverse engineered the commands for the...

The ELM327 (or in most cases some knockoff emulator) is connected to PC/phone either by a usb or bluetooth serial converter, all you need to do is remove that and connect the uarts together. Figured out how to get the decimal point displaying today and also how to activate the scrolling text.