On Wed, 13 Jun 2018 15:16:22 +0200, R.Wieser wrote:

> Alister,
>
>> measuring between a GIPO & 5v reads 0v, so they are both the same
>> voltage.
>
> And as the OP (correctly) stated, they are (thus) both at 5v.
>
> And if his measurement is correct (and it is), and he reads 0v
> difference, than, as Mark has got the same result on his voltage meter,
> his leads should logically be at 5v too (even though they are not
> touching anything but air).
>
> In other words, your reply doesn't *explain* why the OP would be right,
> and Mark wouldn't be.
>
> Hint: voltage reference.
>
> Regards,
> Rudy Wieser

I think you will find i did
I stated that there was no voltage difference between the 2 leads.
they would not both be at 5V as Voltage is a difference between points so
this is an invalid measurement.



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