Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Andy H]

It shouldn't be too bad to get a CD70 'working' in an Omega, as long as you can use an Omega CID (GID doesn't work, been there, tried that).

The BC features are all based around a speed pulse from the ABS and a fuel use signal from Engine ECU.

Check control is individual signals in.

All the above is built into Omega display.

So to recap:

The CID (and GID) have the trip computer functions and check control logic built in.

The speed pulse, fuel level, fuel consumption and check inputs are all wired to the CID/GID and a CAN signal from the NCDX tells the CID/GID what to display.

A couple of questions.
- Is an MID a plug in replacement for the CID or GID (in terms of the check signals & fuel/speed pulse?) (is this the grey plug?...)

[TheBoy]

It shouldn't be too bad to get a CD70 'working' in an Omega, as long as you can use an Omega CID (GID doesn't work, been there, tried that).

The BC features are all based around a speed pulse from the ABS and a fuel use signal from Engine ECU.

Check control is individual signals in.

All the above is built into Omega display.

So to recap:

The CID (and GID) have the trip computer functions and check control logic built in.

The speed pulse, fuel level, fuel consumption and check inputs are all wired to the CID/GID and a CAN signal from the NCDX tells the CID/GID what to display.

A couple of questions.
- Is an MID a plug in replacement for the CID or GID (in terms of the check signals & fuel/speed pulse?) (is this the grey plug?...)

Yes (although you have to run the wires to the wiper stalk, and fit said stalk)

[Dave DND]

and a CAN signal from the NCDX tells the CID/GID what to display.

And this is the bit that could be replicated with a bit of programming and a CAN chip. All you need to do is to analyse the CAN data from the head unit, identify the signal that is turning on the display and program up a chip to emulate this signal. This is pretty much what I am doing with the CD70 at the moment using a cheapie CAN BUS analyser

http://www.cananalyser.co.uk/cando.html

[feeutfo]

So cd70 has to work with omega CID to retain check control and BC functions? Everything else is head unit based???

[Dave DND]

My goal is to get the CID to retain the BC and check control functionality without any head unit fitted at all. (This is similar to a CD70 project I am currently working on) There would be a small module plugged in place of the head unit connection that would contain a CANBUS emulator, with just enough data being outputted to power the screen.

That would then open up the choice of head units to some decent aftermarket ones that would have all of the modern features that you are all after, and I can then start making some proper money out of you lot by selling them to you

 

[Kevin Wood]

I think it might be time to invest in one of these.. http://www.skpang.co.uk/catalog/avrcan-at90can128-development-board-p-292.html

[2woody]

I think it might be time to invest in one of these.. http://www.skpang.co.uk/catalog/avrcan-at90can128-development-board-p-292.html

Hmmm - I could think of a couple of applications for that 

Don't forget that the secret could also be in the screen - my reading of CAN is that you can both broadcast to specific nodes in the network, but alternatively program nodes to receive from specific senders only.

[Dave DND]

I think it might be time to invest in one of these.. http://www.skpang.co.uk/catalog/avrcan-at90can128-development-board-p-292.html

Hmmm - I could think of a couple of applications for that 

Don't forget that the secret could also be in the screen - my reading of CAN is that you can both broadcast to specific nodes in the network, but alternatively program nodes to receive from specific senders only.

Been playing with this - stunning bit of kit for next to no money !!

http://www.cananalyser.co.uk/cando.html

[2woody]

how much ?

I'm actually more interesed in the programable chip to broadcast into a network where I've removed the autobox

But yes, I'll need to read first....

[Dave DND]

how much ?

£125 inclusive of postage 

[Andy H]

and a CAN signal from the NCDX tells the CID/GID what to display.

And this is the bit that could be replicated with a bit of programming and a CAN chip. All you need to do is to analyse the CAN data from the head unit, identify the signal that is turning on the display and program up a chip to emulate this signal. This is pretty much what I am doing with the CD70 at the moment using a cheapie CAN BUS analyser

http://www.cananalyser.co.uk/cando.html

Will the CD70 drive the VGA input on the CID?

[Dave DND]

and a CAN signal from the NCDX tells the CID/GID what to display.

And this is the bit that could be replicated with a bit of programming and a CAN chip. All you need to do is to analyse the CAN data from the head unit, identify the signal that is turning on the display and program up a chip to emulate this signal. This is pretty much what I am doing with the CD70 at the moment using a cheapie CAN BUS analyser

http://www.cananalyser.co.uk/cando.html

Will the CD70 drive the VGA input on the CID?

Reckon it just might . . . .   

[Kevin Wood]

They don't get much cheaper than this:

http://uk.farnell.com/microchip/mcp2515dm-bm/kit-demo-can-bus-monitor-board/dp/1676254?Ntt=1676254

Just reprogram the PIC to do what you want. 

2woody: remember that Megasquirt has a CAN interface. I'm still waiting for the long-promised source code so it can be customised, though.

[MaxV6]

why is it , every time someone mentions the VGA input , I start getting ideas involving 12V supplied small form computers,

[Kevin Wood]

why is it , every time someone mentions the VGA input , I start getting ideas involving 12V supplied small form computers,

Hmm. got one of those in the loft, too, and it's a bit bored at the moment.