I get potential differences 100 mV among my connections and measure one potentia

[jschwartz]

Hi Mark,

 Could you please describe your problem a little more?  What hardware are you using?  What software are you using to program?  What driver and version are you using?  What operating system are you using?  What are you using to measure this potential?  What pins are you measuring between?All this information will be very helpful in diagnosing the problem.