33 lines
1.2 KiB
Markdown
33 lines
1.2 KiB
Markdown
# On Pin Pressed
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Register an [event handler](/microbit/reference/event-handler) that will execute whenever the user holds the `GND` pin with one hand, and presses pin `0`, `1`, or `2` with the other hand, thus completing a circuit; when you run a script with this function in a web browser, click pins 0 , 1, or 2 on the simulator.
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*Note* that this function works best when the BBC micro:bit is powered by AAA battery.
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```sig
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input.onPinPressed(TouchPin.P0, () => {
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})
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```
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### Example: pin pressed counter
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This example counts how many times the P0 pin is pressed. Each time the pin is pressed, the global count variable is increased by 1 and displayed on the screen.
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```blocks
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let count = 0
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basic.showNumber(count, 100)
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input.onPinPressed(TouchPin.P0, () => {
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count = count + 1
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basic.showNumber(count, 100)
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})
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```
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### Lessons
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[love meter](/microbit/lessons/love-meter)
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### See also
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[BBC micro:bit pins](/microbit/device/pins), [pin is pressed](/microbit/input/pin-is-pressed), [analog read pin](/microbit/pins/analog-read-pin), [analog write pin](/microbit/pins/analog-write-pin), [digital read pin](/microbit/pins/digital-read-pin), [digital write pin](/microbit/pins/digital-write-pin)
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