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The comprehensive GPIO pinout website for the BBC micro:bit


P11: Onboard Button B

P11 (the other being P11) is one of the two pins wired directly to the micro:bits onboard A and B push buttons.

This pin is pulled up to 3V via a 10K resistor (R22), and connected directly to 0V/GND when the button is pushed. Therefore it will read logic HIGH when not pressed, and logic LOW when pressed.

Part of pinout.xyz. Not affiliated with the Micro:bit Educational Foundation.
Created by Phil Howard & Joshua Lowe.