Build your own kitchen timer with a dual alarm

Kitchen Helper

© Lead Image © besjunior, 123RF.com

© Lead Image © besjunior, 123RF.com

Article from Issue 237/2020
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A simple kitchen helper with two timers assists budding chefs in coping with dishes that are unlikely to be ready at the same time.

Not all the recipes you cook likely need to be ready at the same time, especially if everyone in the household has their own idea of how long you need to boil eggs for breakfast. A simple dual timer solves the problem.

This project uses a Pi Zero and some cheap components sold by the usual mail order companies for a few euros, dollars, or pounds. In principle, it is possible to build the project from scratch on a breadboard without any soldering, which makes it perfect as a starter project for your own experiments.

On the Pi Zero you need to install Raspbian "Buster" up front; the Lite version will do the trick. The only additional package you need to install for the time being is wiringPi [1], which uses a numbering system different from the header pin and GPIO systems. If you want to work with a graphical user interface, you could switch to a Raspberry Pi 3 or 4, but these platforms are oversized for this use case.

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