HOME › Forums › Input/Output › EZIOxx › EZIO2X4 – How to use I3/I4 as simple "dry contacts" › Reply To: EZIO2X4 – How to use I3/I4 as simple "dry contacts"
I’m the original poster of this thread and I’m back with a new but very related question… I’m enabling my first analog sensor on I4 (ATS2000a temperature sensor). I connected it per the diagram to I4 and I removed the pull-up resistor I previously had on the input (to keep it from bouncing around when it was unused). Everything works perfectly and I’m reading accurate temperatures. The problem is that I have a simple dry contact device connected to I3 per the method described in this thread. Even with the pullup resistor on I3, it’s bouncing around because *both* I3 and I4 are switched into analog mode. Is there a recommended approach that I can use to keep I3 functioning like a dry contact when I3/I4 are enabled as analog inputs?