Electrical whizzes - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Jun 10 at 13:59

i might just make it up and attach a wire to one of the cigarette lighter ones and see what happens

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Registered: 10th Sep 03
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17th Jun 10 at 14:03

quote:
Originally posted by Steve
yes im messing about making a sequential led shift light, the parts are only a few quid and i reckon i might be able to sell a few as the ones you buy cheapest is like 90 quid

But you can use the signal for that on your project.

Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Jun 10 at 14:04

you mean take it from the same place theres does in the fitting instructions? not a bad idea, just need to find out there fitting instructions now lol

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Registered: 10th Sep 03
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17th Jun 10 at 14:08

Yep, the way that IC works is to take a signal and turn it into a voltage. A good place to start would be the existing rev counter wiring. If that doesn't work you can get a signal by wrapping some wire around the HT lead coming from the coil. If that doesn't work then you can get a signal from the ground of the coil pack. The signal from the cigarette lighter will probably be quite noisy and shitty as the alternator will get in there and fuck things up.

Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Jun 10 at 14:11

yep someone has fitted an omex one, red wire in the kit goes to live, black wire to earth then a blue one goes to one of the wires going to the dials, i can only assume this is the pulse one

so getting there, just need to figure out which wire that would be on mine, i guess i could make it and just try all of them until one works lol

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Registered: 10th Sep 03
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17th Jun 10 at 14:14

Haynes manual will have a wiring diagram in the back

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Registered: 10th Sep 03
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17th Jun 10 at 14:15

That IC might still work if it's a pulse signal though I couldn't say for sure. Would a piece of piss to do it with a PICAXE if it is a pulse though...

[Edited on 17-06-2010 by ed]

Steve

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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Jun 10 at 14:17

i dont have any means to program a PIC chip

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Registered: 10th Sep 03
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17th Jun 10 at 14:19

PICAXE is different to a PIC. All you need to program a PICAXE is the serial cable wich costs a couple of quid and then you just stick a 3.5mm stereo socket onto your board for programming. They're pretty useful for little projects like this.

Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Jun 10 at 14:20

could be an option if this fails, only reason i was pursuing that is because the diagram is right there laid out in front of me so me being shit with electronics shouldnt get it too badly wrong

Dom

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Registered: 13th Sep 03
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17th Jun 10 at 17:24

quote:
Originally posted by ed
That IC might still work if it's a pulse signal though I couldn't say for sure. Would a piece of piss to do it with a PICAXE if it is a pulse though...

[Edited on 17-06-2010 by ed]

I already mentioned about using an Arduino (can be had for £8-10) and they are a piece of piss to program. If you could get a gear selector feed (possibly calculate it from the pulse feed to the speedo and from the coil side like most gear indicators do) you could then map RPM to gear (could even have a desktop program to program the arduino board so the end-user could customise it).

Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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17th Jun 10 at 22:57

god knows what your on about

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