f**k hell mna, thats a freaking aweosme effort.

Firstly, I would love to have this idea in my dash. Maybe situated inside the analogue presented speedometer.

Seocndly, what sort of background do you have in thsi stuff? Not being a smart a** but im curious to know how hard it is to do for Joe Citizen like myself.

Thirdly, I would turn this into a doco.

Keep up the awesome work amte. I didnt know half the stuff you guys are on about.

tested mine, stays the same all the time, 8 secs for slowest setting, stopped or 100kph .... had to get a new BEM a while back, should've got an EL one, wonder what else is different

and back on topic, i think it was a shame they dropped the digital dashes, the only b**ch i had with mine was the tacho, that was just a series of leds with a number next to it.., that was pretty crappy, but the speedo was great

at one time i had an after market digital clock that also had a tacho function as well (numerical display), i cut a part of the dash out in the car i had at the time and set this thing into it and it was great, easy to read and precsise

2 days to go on the eBay cluster with broken speedo, I hope I get it.



When I'm finished the software, I will draw a schematic, document, and provide the software so anyone
can make it. I'm not trying to make money out of it. I started out programming to help me steal
pay TV. I have no professional background with it.. or I'd have it finished by now
It does take some time to get a grip on assembler, but you can start with BASIC and go from there.



The EL smartlock document on this site covers that, it also has to be at least Futura I think...
"Mid Series Features (Red EF / Blue EL Colour)
The Mid series Body Electronics Module had all the features of the Low series, and additional features such as,
Dome Lamp Delay/Fade
Power Window Operation with Key off
Variable vehicle speed sensitive intermittent Wipe (EL Only)"


I would have finished it by now if I could use PWM, but since it's a multiplexed LED display,
It has to be constantly driven, If I timed a pulse it would make the display flicker at a rate that varied with the speed of the car,
and I couldn't handle that. I'm using a 16F84A for this, so I can use timer tmr0 in the background, or interrupts.


I'm going back to this way, with some good advice from dang who gave me an easier formula (2 in fact).
waiting around for serial data would also neglect the display routine.
Cheers, Art.

There is a schematic in my gallery of a simplified digital speedometer.
I used orange displays for this one since they closely match the colour
of the odometer in the cluster. Blue LED displays can be used with this
design.

Drop me an email if you would like to try the project, and I'll email you
d**k Smith/ Jaycar catalogue numbers for major parts, circuit notes,
and hex file for pic microcontroller. The cost of the bare electronics is
about $30.

Cheers, Art
art@austech.info

ps. If you don't have a pic programmer, and want to biuld the project,
I will send a pre-programmed microcontroller for a reasonable price.

I also have a completed unit that I am prepared to sell.
It has red displays, and will connect straight to an EF or EL Falcon
without the need for any adjustment. The unit is callibrated to the
digital speedometer that appears on the instrument cluster in
diagnostic mode.
Cheers, Art
art@austech.info

Finally got it installed into my instrument cluster,
although only the display part is mounted in the cluster.
There is ribbon cable runnng from the display routed through
to an area under the stereo where the speedometer electronics is.







The question is whether to replace my tachometer as well....
Cheers, Art.

That's very cool @rt. Great little modification you've knocked up.

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Last edited by blackjack_original on Fri Jun 06, 2014 3:14 pm, edited 1 time in total.

I still have the needle
Email me, and I will provide parts list & schematic when complete.
art@austech.info
I am not sure if it affects roadworthiness to replace the original speedo yet.
worst case scenario is I have to replace with original from the wreckers
when it comes to selling the car.
My insurance company was OK with it.
Art.

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Last edited by blackjack_original on Fri Jun 06, 2014 3:18 pm, edited 1 time in total.

I mean replacing an original speedo with one that you made
may not be acceptable. ZL digital speedo is original.

Green & blue displays are both available, although you have
to got to Jaycar to get blue ones. I haven't seen white seven
segment displays yet..
Art.

Good effort
You could have a slightly smaller display mounted above or under a working speedo gauge. From memory, there is some room as the gauge motor is the same size as the other gauge motors in the cluster and all are rather small

Also why not a factory looking reverse LCD with black numbers on an amber backgroung like the oddometer ?

Cheers

yeah that would be cool , to have the original one and the digital readout

What about the strip at the bottom that houses the cruise and economy lights as a potential location? Surely there is some room somewhere down there?

The analogue speedometer is small, and the display could be
mounted above it, but at some speeds, the needle would be
in the way.

Mounting the display where the high series voltmeter would be
is another possibility, but the downside of this is that the steering
wheel is in the way of this when I have my seat & steering wheel
adjusted to my preference.
Art.