Is it critical for the value of the zener diode as I can only get my hands on a 2.7v jobbie today
No, but a higher voltage zener will mean the potentiometer will be working a bit harder.
I'd set it to zero and connect it up and then bring it up to the voltage you want - this will negate any effects due to the load the ECU puts on the potential divider.
Ahh ok. Well thanks for your help guys I'll try and slap something together today. Cheers :)
Can I ask what car this is for?
It's for a Toyota Corolla Compressor
Well works like a charm on the meter so now to plumb it in.
Last edited by AdCNC; 11-07-2013 at 10:38 PM.
By lakmalp in forum Machine Control SoftwareReplies: 3Last Post: 16-06-2013, 04:52 PM