Harry buscema Posted May 23, 2020 Report Share Posted May 23, 2020 hi there, ive currently got a evo 4 running an evolink and im trying to wireup a brake switch as a clutch switch, ive wired one side into DI 5 and the other to ground, but with the software i canrt get any reading from the switch when its clicked in or out. my settings within pclink: function GP input input off pullup off on level high active edge rising , Thanks Quote Link to comment Share on other sites More sharing options...
Davidv Posted May 23, 2020 Report Share Posted May 23, 2020 Do you have the other half of it connected to 12v? I've done the same where I removed the factory stopper switch and put another brake switch in. But the problem was that I really needed the switch to activate on/off closer to the engagement/bite point of the clutch, rather than right at the end of travel. So it didnt work so great for launch control etc. So I'm going to redo it with an adjustable mount somehow. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 23, 2020 Report Share Posted May 23, 2020 Since one side of your switch is ground, you will need the DI pull-up turned on. Quote Link to comment Share on other sites More sharing options...
Harry buscema Posted May 23, 2020 Author Report Share Posted May 23, 2020 Hi there, Thanks for the reply I thinks that's my issue, are the digital inputs 12v or 5v?,if they are 5v I'm guessing I'd need a voltage regulator? Thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 23, 2020 Report Share Posted May 23, 2020 No, the wiring is fine as it is, just turn the pull-up on Quote Link to comment Share on other sites More sharing options...
Harry buscema Posted May 23, 2020 Author Report Share Posted May 23, 2020 3 hours ago, Adamw said: No, the wiring is fine as it is, just turn the pull-up on Hi there, sorry I forgot the mention I tryed ever combination with the setup I had, but there was no voltage running through the wire out the ecu and nothing coming from the switch, which now makes sense from Davidv's post. Thanks Would still like to know if the digital inputs will take 12v, thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 23, 2020 Report Share Posted May 23, 2020 Yes they will take 12V. But you dont need 12V. If you turn the pull-up on, the DI will already be connected to 12V internally, so it sees 12V when the switch is open, then your switch closes it grounds it. So you have two states, 12V & 0V, on and off. If you see no change in status when you have the pull up turned on then either your switch is not working or you have a wiring problem. Quote Link to comment Share on other sites More sharing options...
Harry buscema Posted May 23, 2020 Author Report Share Posted May 23, 2020 11 minutes ago, Adamw said: Yes they will take 12V. But you dont need 12V. If you turn the pull-up on, the DI will already be connected to 12V internally, so it sees 12V when the switch is open, then your switch closes it grounds it. So you have two states, 12V & 0V, on and off. If you see no change in status when you have the pull up turned on then either your switch is not working or you have a wiring problem. thanks for clearing that up for me, ill give that a go next and come back to you if i get stuck again hahah, thanks again Quote Link to comment Share on other sites More sharing options...
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