MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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ive been thinking of making my own shift light for the revs....
how would i go about making a "shift light" my self, what parts and tools would i need exactly? besides wires, leds and soldeiring?
would i need to modify or do somthin to the rev counter?
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
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would be a bit of a shit i think, doesnt the tacho wire provide AC current?
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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im not sure mate 
their must be a way to do it
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N90ATH
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Registered: 10th Sep 03
Location: Boreham, Essex
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well all the shift light come with some unit that triggers the light at a certain rev range so guessin it is the ac current. y not just buy onw would still be the same rice and a hell of a lot less messin round
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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hmmm, i guess no ones done it too the standard rev counter then
i dont want a whole new rev counter/tacho to mount up as im good with electronics so want to try this my self, but not too sure how the rev counter works, i have a spear one handy that i can test on, but just need lil advice were to start you see??
am i right, that i may need some sort of device/circuit that measures the rev and can send a current/signal to which i can wire the shift light??
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MJ
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Registered: 18th Sep 03
Location: Hampshire Drives: ITR DC2 + Skoda Felicia
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i made one at college for an AS project, well simalar, as the speed went up the voltage went up this causing more leds to light up. very easy to do.
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modded_corsa
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Registered: 9th May 03
Location: Middlesbrough
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cud u not use small electro magnets......on placed about 4500-5500rpm...and one places on the needle....and wen the go near each other the pass current and allow the shift light to light up...
?
just how i would do it.....but probably wouldnt work
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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quote:
Originally posted by mark_jarman1
i made one at college for an AS project, well simalar, as the speed went up the voltage went up this causing more leds to light up. very easy to do.
hmmm interesting 
could you explain some more, how would it be wired up exactly and to were??
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Ian
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Registered: 28th Aug 99
Location: Liverpool
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Electromagnets is a daft ideal, would fail after a week.
You'd be far better taking the pulse from the coil and running that through a diode to make sure you're only getting DC, then smooth it with fairly big capacitor and transistorise the result. You may have to play about with a variable resistor to calibrate it first of all but you could swap that for a regular one when you've worked out what resistance is required.
Edit - yeah, multiple LEDs very easy also, just run different resistance on each transistor.
[Edited on 20-01-2005 by Ian]
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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hmmm sounds complicated but i will give it a go with the spear rev counter ive got
anyone else
TTT
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j0hn
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Registered: 12th Apr 04
Location: Amersham, Buckinghamshire/Kingston-upon-Thames
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off topic: ahhh u from hayes i been to the all u can eat chinese ther lol
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MoNkEy MaGiC
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Registered: 12th Apr 03
Location: West - London Drives: Corsa GSi
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quote:
Originally posted by j0hn
off topic: ahhh u from hayes i been to the all u can eat chinese ther lol
alright mate,
nah not the one in hayes, were abouts is it? ive heard theirs a few about here near yeading?
i see you go "kingston" uni, im always in kingston! its a really Really nice place init!
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j0hn
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Registered: 12th Apr 04
Location: Amersham, Buckinghamshire/Kingston-upon-Thames
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yeh man kingston is quality in the summer loads of birds n that. Duno wer in hayes but its shite lol!
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Waldbrand
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Registered: 22nd Mar 05
Location: Bavaria, Germany :-)
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maybe i can give you a circiut layout, for all the DIY-experts. Tell me if you are interested...
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