Saturday 19 October 2019

How to measure voltage of a floating GPIO (Raspberry Pi)


I would like to measure that voltage of a floating GPIO on a Raspberry Pi 3. When I use a multi meter or an oscilloscope it looks like the pin is pulled to ground and shows 0.


Another way of asking the question is, 'How can I determine if a GPIO pin is floating using an oscilloscope or multi-meter?"


How can I use an oscilloscope to measure the voltage of a floating GPIO pin on a Raspberry Pi?




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