On Tue, 12 Jun 2018 21:23:25 +0100, mm0fmf wrote:

> On 12/06/2018 11:17, Mark J wrote:
>> If that meter is registering 0v between 5v and a GPIO pin, then that
>> implies/both/  leads are at 5v,
>
> Really?
>
> When my meter leads are unconnected the meter registers 0V. Does that
> imply both leads are also at 5V?
>
> ;-)

no it means the voltage difference between the 2 leads is 0. in other
words they are both the same voltage
now back to the original statement, measuring between a GIPO & 5v reads
0v, so they are both the same voltage.





--
Logic doesn't apply to the real world.
  -- Marvin Minsky

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