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PICList Thread
'[OT]Electronic car instruments'
2005\01\03@044233 by Lee McLaren

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Hi,

Does anyone know of a project to build an electronic dash for a car? A
friend of mine has built a sports car and the existing instrument
cluster speedo can't be used.
I have done some searching with Google but don't seem to be able to hit
on the magic search terms!


regards

Lee Mclaren

2005\01\03@051338 by Jinx

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You're in Aussie aren't you ?

Silicon Chip did

http://www.siliconchip.com.au/cms/A_30654/article.html

http://www.siliconchip.com.au/cms/A_30671/article.html

and also advertise these

http://www.vidcam.com.au/sales/bs5080.html

http://www.autospeed.com/cgi-bin/browse.cgi?category=256&product=100770001

2005\01\03@052516 by cdb

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There is someone who did a complete instrument panel for a hot rod.

I recall they were mentioned in Silicon Chips motor magazine.

There is also Ozitronics who did a MPH/KLH/petrol usage time thingy
using a 68HC controller, though the code is proprietry.

A book for the 18F series that has how to make a control panel for
battery powered scooter might be useful for some ideas.

Embedded C programming and the Microchip PIC

ISBN1401837484

If you are in Aus it is much much much cheaper to buy from Amazon UK
and it gets here quicker than getting it posted interstate.

Colin

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2005\01\03@054732 by Lee McLaren

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Thanks Jinx,

Yes I am in Oz, Tasmania to be exact,

I am looking for something a little more sophisticated, something like a
LCD dash with a speedo and odometer, temp, fuel etc.

We have already tried the LED ones but they are unreadable in sunlight
and we need the odo function for insurance, his insurance policy limits
the car to 8k kilometers per year and he is concerned that if there is
no evidence of distance traveled they may shirk their responsibilities!

I the distant past I seem to remember a LCD dash that someone designed
using I think from memory a 16f877 but I can't find it anymore.

regards

Lee McLaren.


Jinx wrote:

{Quote hidden}

2005\01\03@055827 by cdb

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Wouldn't a VFD be better than even a backlit LCD for car purposes?

You can buy drop in VFD replacements for the standard HD44780 LCD's.

If the car already has speedo and tacho sensors, then it would be
quite easy (relatively) to harness this to some extra electronics.

Colin

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cdb, .....cdbKILLspamspam@spam@barnard.name on Monday,3 January,2005

Web presence: http://www.btech-online.co.uk  

Hosted by:  http://www.1and1.co.uk/?k_id=7988359

Light travels faster than sound. That's why some people appear bright
until they speak!



2005\01\03@060449 by Russell McMahon

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A wee amount of relevant top post helps those of us who stumble across
threads late.

> Silicon Chip did
>
> www.siliconchip.com.au/cms/A_30654/article.html
> www.siliconchip.com.au/cms/A_30671/article.html
> http://www.vidcam.com.au/sales/bs5080.html
> http://www.autospeed.com/cgi-bin/browse.cgi?category=256&product=100770001

2005\01\03@062545 by Jinx

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> Yes I am in Oz, Tasmania to be exact,

Ah, a base12er

> I am looking for something a little more sophisticated, something like
> a LCD dash with a speedo and odometer, temp, fuel etc.

> I the distant past I seem to remember a LCD dash that someone
> designed using I think from memory a 16f877 but I can't find it
> anymore.

If it helps, I've got this, which was F84/SP505, is now F628A/VI402
and a little more sophisticated (thanks to various tips picked up over
the years from PIClist)

http://home.clear.net.nz/pages/joecolquitt/0sp505.html

The VI402 has 3 decimal points, colon and ^ annunciator

ICM7211ILP is ~ NZ$7 from Arrow, VI402 is ~ NZ$2.50
from Soanar Plus

And I guess you'll also have seen this in the past few days

http://home.clear.net.nz/pages/joecolquitt/led+lcd.html

2005\01\03@062926 by Jinx

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> Wouldn't a VFD be better than even a backlit LCD for car purposes?

Probably would be, although you could front-light an LCD fairly
easily with white LEDs

2005\01\04@095858 by Michael Rigby-Jones

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{Quote hidden}

The Dash7 springs to mind, http://home.c2i.net/toratlel/Dash7.htm  (so
called as it was designed for use in a Lotus seven replica).  The
firmware is not open source, but given the hardware design it would not
be very difficult to write from scratch.

Regards

Mike

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2005\01\04@114200 by Alex Harford

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What about using an existing one from a production car?  

http://pages.prodigy.net/gearhead43/DavesGP/hud.html

Depending on the output from his tranny, he might need a convertor box
for the Vehicle Speed Signal, GM likes 4000ppm or 2000ppm.

On Mon, 03 Jan 2005 20:36:22 +1100, Lee McLaren <EraseMElmclarenspam_OUTspamTakeThisOuTtasnet.net> wrote:
{Quote hidden}

> -

2005\01\05@030556 by Lee McLaren

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Thanks everyone for the replies,

The Dash7 was the one I was thinking off (thanks Michael)  and seeing
that this car is a Locost which is very similar to a Lotus Seven it may
be a good start for a solution, my friend is scowering the junk yards to
try to find a electronic version of the speedo / odo that may fit the
existing dash for a quick fix (with a pic to count pulses and correct
the count) but I do like the idea of the Dash7, would look very nice
with a graphical VFD etc..


thankyou


Lee McLaren

Michael Rigby-Jones wrote:

>  
>
>>{Original Message removed}

2005\01\05@042945 by Michael Rigby-Jones

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{Quote hidden}

Lee,

I'm currently building a Locost myself (almost at rolling chassis
stage!).  It's well worth signing up to
http://www.locostbuilders.co.uk/index.php even if you are not in the UK.
There has been some discussion on the Dash7 in the "Electrics" forum.

Regards

Mike

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2005\01\06@030201 by Lee McLaren

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Thanks for the info Michael,

My friend Marcus has just registered his lowcost, the site is
http://www.blown7.tasnet.net if you want to have a look at what it looked like
while it was being built (there is a link for photos on the site but
does not display correctly so you have to hover around to find it), for
some reason he hasn't updated the web site since he got the car
registered... :)

regards


Lee McLaren

Michael Rigby-Jones wrote:

>  
>
>>{Original Message removed}

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