(almost) solderless, reusable micro:bit timer
Description
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! A demo and step-by-step building instructions is available here: https://youtu.be/lHQFzX9xagM The brads system can be used for any other project without having to sacrifice a Micro:bit board. This project only uses the 3V, Ground and #0 ports but the Connector and Micro:bit-Holder parts can be used to connect any other available ports. Parts list: * PLA * one BBC micro:bit™ v2 board (I use v2 because it can play sound without any external speaker) * short brads (brass fasteners) * one arcade-style push button * one switch button * one coin-battery holder * one CR2032 3V coin battery * wires and solder Some references on [Amazon](Amazon.fr): [Micro:bit board](https://www.amazon.fr/gp/product/B08QW82B4F) [Coin battery holder](https://www.amazon.fr/gp/product/B0823WK4CN) [Brads](https://www.amazon.fr/gp/product/B08748CKF4) [Arcade push button](https://www.amazon.fr/gp/product/B0819ZZRKC) [Switch button](https://www.amazon.fr/gp/product/B08HH21DL2) My code for the Timer can be found on [GitHub](https://adamow6.github.io/timer/).
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