Hello, hoping to get a bit of help design a circuit to asses complexity and cost. I spent a bit of time searching google etc but may not know the proper keywords to return relevant circuit info. I can't imagine I'm the first person to want to do this.
I current have a throttle position sensor (tps) which is a potentiometer. It takes +5v as input and outputs anywhere from about +0.2v to +4.7v. I'm retrofitting it into a car that uses a more archaic style of tps, grounding toggle switches to indicate two absolute cases, closed and wide open. I would prefer to not hack apart the wiring loom and install custom mounting brackets for two microswitches, instead opting to install a circuit between the tps and ecu.
I'm wondering if there is an easily constructed circuit that will read the potentiometer voltage, and trigger relays at 2 specific voltage values (closed and wide open)?
I understand a comparator circuit can tell me if the tps voltage is above 4.6. then it's at wide open, but how would one construct a comparator circuit in tandem to tell me if the voltage is below 0.3v?
I suppose I could hack apart the potentiometer, insolate/remove the strip and solder in two absolute connection points where the wiper is at min and max....but again I'd rather destroy as little as possible because I would like to use it in the near future.
I current have a throttle position sensor (tps) which is a potentiometer. It takes +5v as input and outputs anywhere from about +0.2v to +4.7v. I'm retrofitting it into a car that uses a more archaic style of tps, grounding toggle switches to indicate two absolute cases, closed and wide open. I would prefer to not hack apart the wiring loom and install custom mounting brackets for two microswitches, instead opting to install a circuit between the tps and ecu.
I'm wondering if there is an easily constructed circuit that will read the potentiometer voltage, and trigger relays at 2 specific voltage values (closed and wide open)?
I understand a comparator circuit can tell me if the tps voltage is above 4.6. then it's at wide open, but how would one construct a comparator circuit in tandem to tell me if the voltage is below 0.3v?
I suppose I could hack apart the potentiometer, insolate/remove the strip and solder in two absolute connection points where the wiper is at min and max....but again I'd rather destroy as little as possible because I would like to use it in the near future.