I'm using the HMC6352 compass module for a navigation project. I was wondering if there is a maximum interface distance beyond which the signal of the compass is degraded. My compass works fine, but b/c of EMI issues, I need to separate it from the rest of the setup.
I've tried connecting the compass and arduino over 4ft of twisted wire, and am not getting a reading. I've checked the setup with a multimeter, and the supply and ground, and have checked for continuity and resistances. Everything seems to be fine. Is this an issue of cable length? or could I be missing something else?
thanks for any input
Twisted pair is a poor choice for signals that are not differential.
This is because the capacitance is high. Try normal cable.
would untwisting the pair be sufficient?
that seems to have been the problem. Everything works now