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Hey mate - Sorry to hear about your loss... Off topic, but can you check in that haynes manual which wire/connector in the speedo/dials loom on non-sports is for the RPM feed?
Left the haynes at home, but think i've found it from the other thread. Dont really want to hijack that other thread but you mentioned the signal may be affected? would leds really draw that much power away? even if they were ran in parralel to the clocks?
Yeah they cost alot compared to diy... plus im not really interested in a shift light really; but will be using the same curcuit/principle to change the colour of my dials at certain rpm :)
Ok scrap what that guy said then!
Whats the conclusion then? Whats the easiest way to use the RPM signal in the car to create a sequencial shift light (eg 1, then 2, then 3, then 4 leds lit up)
Do these help?
Ok think im gnna try to do this by using the signals from the rpm signal already in the cars wiring...
Page 8 bottom diagram. Would that work with the frequency>voltage thing that Dink recommended in the first few posts?
Also - does any of this make sense to you guys?
^thats limited because of the length of the lever yes? Just had the idea as well that the resistance from pressing this switch would maybe affect the accuracy of the rpm reading? (if it need significan resistance fromthe needle to move the fin)
What about the following? (applies to a shift...
^In which case I could just lie on the these on there side, attach something to the bottom of the needle to activate it?
But that would only switch one circuit on (red leds). How could I then switch the first circuit off? Maybe it would be an idea to just use bright red leds to give a dark...
Edit... just had an idea. Why can't i do something simular to how heater controls work in a ph1? (various resistance rings attached to rotating face)...
Basically I've been in contact with the person who did this...
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Who did it all mechanically. He explained how to do it but i dont want just the needles.
Why would I have to mount something in front of the dials? the needle has a black cap where 1cm ish of the needle is...
Anyone got any ideas? Hooking it up to the speed pulse seems a bit more complicated tbh.... im tempted towards finding some sort of mechanical method...
Another idea. I could mount a micro switch to the circuit board so that when the needle passed over it (the part under the black cover ie not seen) it would hit the micro switch at a certain rpm (depending where the switch was located) then activate the other circuit (red)
^can the signal not be taken from the loom?
Why do I need to do a tri-colour led driver? Why not just wire up two differend LED circuits (one blue... one red) and use two seperate signals from speed pulse in opposite polarities? (if that makes any sense)
Was discussing this with someone who has done it on other cars, but his approach is to mount 3 smds in a triangle under the needle so depending on the angle (and rpm) different colours could be done. Seems a easy way to do it but I was thinking of doing it so the whole dials changed colour not...
Got a few questions; thought someone on CS must know about these specifics:
- Clio mk2 speedo - how does the needle turn? is it motor driven?
- is there such thing as a micro trip switch? Something that will change between circuits depending on the position of the needle?
Thanks.