Migrate docs from the other repo

docs/reference/input/on-pin-pressed.md

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+# On Pin Pressed
+
+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.
+
+*Note* that this function works best when the BBC micro:bit is powered by AAA battery.
+
+```sig
+input.onPinPressed(TouchPin.P0, () => {
+})
+```
+
+### Example: pin pressed counter
+
+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.
+
+```blocks
+let count = 0
+basic.showNumber(count, 100)
+input.onPinPressed(TouchPin.P0, () => {
+    count = count + 1
+    basic.showNumber(count, 100)
+})
+```
+
+### Lessons
+
+[love meter](/microbit/lessons/love-meter)
+
+### See also
+
+[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)
+