Steering wheel remote control switch modification
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Steering wheel remote control switch modification
The steering wheel switches are the rocker type that (presumably) conduct current only when held. Is it possible to change this to a standard on/off feed? For instance, push the "volume up" rocker and it switches on a circuit, push a second time and it switches off? Is there a simple or common device/relay I could get from maplins for instance?
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You would need either an RS flip-flop or a bistable latch for this Mike.
These are implemented in 74 series TTL or 4000 CMOS logic ICs or you could make up sets of latching relays to implement a bistable.
What is your idea Mike? I'm curious
These are implemented in 74 series TTL or 4000 CMOS logic ICs or you could make up sets of latching relays to implement a bistable.
What is your idea Mike? I'm curious
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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Initially, just an activation switch for arming/disarming the nitrous circuit.
Later I may get a progressive controller which has (four I think) front panel mounted push buttons which I presume won't need such a modification. I'm currently in liason with the manufacturer to see if they are indeed push & hold type controls and if I can tap into these in which case the steering wheel rocker switches will be ideal without modification.
The freed space below the radio will make a neat hidey hole for the controller and with the steering controls connector being behind the radio, would allow minimal and neatly hidden wiring.
Later I may get a progressive controller which has (four I think) front panel mounted push buttons which I presume won't need such a modification. I'm currently in liason with the manufacturer to see if they are indeed push & hold type controls and if I can tap into these in which case the steering wheel rocker switches will be ideal without modification.
The freed space below the radio will make a neat hidey hole for the controller and with the steering controls connector being behind the radio, would allow minimal and neatly hidden wiring.
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Mike,
Wiki is your friend...
http://en.wikipedia.org/wiki/Multivibrator
No giggling at the title of the subject Look down the page for Bistable Multivibrators...
You need two transistors.
As Dan says, the same can be done with a small relay but much more elegant with transistors or even TTL or CMOS Logic ICs. You can make a Bistable using NAND gates, either using a 7400 (TTL) or a 4011 (CMOS)..
Wiki is your friend...
http://en.wikipedia.org/wiki/Multivibrator
No giggling at the title of the subject Look down the page for Bistable Multivibrators...
You need two transistors.
As Dan says, the same can be done with a small relay but much more elegant with transistors or even TTL or CMOS Logic ICs. You can make a Bistable using NAND gates, either using a 7400 (TTL) or a 4011 (CMOS)..
Jim
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...
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Jim, I did read about RS flip flop and bistables last night and even went on to read about the IC's but I can't see any that flip from the one input only, they all appear to require two or am I missing something?
I may as well abandon that idea and just fit the kit activation switch in a xantia switch blank. I can then use the steering wheel switches to control the black box instead - I've been told it uses unlatched buttons that I can hack into at the pcb But in doing so will have to pass up on the extended warranty it has.
I may as well abandon that idea and just fit the kit activation switch in a xantia switch blank. I can then use the steering wheel switches to control the black box instead - I've been told it uses unlatched buttons that I can hack into at the pcb But in doing so will have to pass up on the extended warranty it has.