Cited as a reference · for some experience
What are the input voltage thresholds for the Raspberry Pi's GPIO pins?
Why people recommend it
Measures the input voltage thresholds of Raspberry Pi GPIO pins; often cited for the roughly 1.2 V switching point, though it tests an older Pi model.
Watch for: measured on an older Pi model
In their words
Watching this video (for an older Pi) I get:
Dennis on raspberrypi.stackexchange.com, Apr 2015. CC BY-SA.
The GPIO gets high at around 1.34 volts according to this YouTube experiment.
Aloha on raspberrypi.stackexchange.com, Jan 2016. CC BY-SA.
The tripping point for the gpio seems to be around 1.2v ([video]).
Gerben on raspberrypi.stackexchange.com, Oct 2013. CC BY-SA.
