pxt-calliope/docs/reference/input/on-pin-released.md

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# On Pin Released
Start an [event handler](/reference/event-handler) (part of the
program that will run when something happens, like when a button is
pressed). This handler works when you release pin `0`, `1`, or `2`
together with `GND`. When you are using this function in a web
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browser, click and release the pins on the screen instead of the ones on the
@boardname@.
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If you hold the `GND` pin with one hand and touch pin `0`, `1`, or `2`
with the other, a very small (safe) amount of electricity will flow
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through your body and back into the @boardname@. This is called
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**completing a circuit**. It's like you're a big wire!
```sig
input.onPinReleased(TouchPin.P0, () => {
})
```
## ~hint
This function works best when the @boardname@ is using batteries for power,
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instead of the USB cable.
## ~
## Parameters
* ``name`` means the pin that is being released, either `P0`, `P1`, or `P2`
### Example: pin pressed counter
This program counts how many times you release the `P0` pin.
Every time you release the pin, the program shows the number of times on the screen.
```blocks
let count = 0
basic.showNumber(count, 100)
input.onPinReleased(TouchPin.P0, () => {
count = count + 1
basic.showNumber(count, 100)
})
```
### See also
[@boardname@ pins](/device/pins), [pin is pressed](/reference/input/pin-is-pressed), [analog read pin](/reference/pins/analog-read-pin), [analog write pin](/reference/pins/analog-write-pin), [digital read pin](/reference/pins/digital-read-pin), [digital write pin](/reference/pins/digital-write-pin)
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