(almost) solderless, reusable micro:bit timer

Micro:bit boards are brilliant little platforms.

I needed a fun replacement for a three minutes hourglass timer and imagined a device working with what I had at hand.

Since I wanted to be able to reuse my Micro:bit board for other purposes, soldering wires to connect things like a button, a switch and a battery was a no-go. Until I came with an idea: building some kind of craddle to connect to the Micro:bit ports without soldering them.

And that's the nice part of my design: the Micro:bit connects to whatever component you want without any direct soldering.
I solder brass fasteners to the components. And brads connect to the Micro:bit, just touching the ports.
That way you just slide the Micro:bit board in the holder to make it connect to the components. And you can remove it and reuse it for other projects as you want.

My project is a 3 minutes timer. Three minutes is the default time. Shake it and it's a two minutes timer. Shake it again and it's a one minute timer!