This function works best when the micro:bit is using batteries for power, instead of the USB cable.
On Pin Released
Start an 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
browser, click and release the pins on the screen instead of the ones on the
micro:bit.
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
through your body and back into the micro:bit. This is called
completing a circuit. It’s like you’re a big wire!
input.onPinReleased(TouchPin.P0, () => {
})
Parameters
name
means the pin that is being released, eitherP0
,P1
, orP2
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.
let count = 0
basic.showNumber(count, 100)
input.onPinReleased(TouchPin.P0, () => {
count = count + 1
basic.showNumber(count, 100)
})
See also
micro:bit pins, pin is pressed, analog read pin, analog write pin, digital read pin, digital write pin