- Published in issue 1/2020 on page 59
Thermoelectric Tea Timer
First dealings with energy harvesting
This project controls the brew time of a tea bag in hot water. The mechanics are controlled electronically, and the electrical energy required comes from contemporary energy-harvesting technology, specifically, from the temperature difference between ambient air and the hot water. Meaning batteries (dry or rechargeable), or even a power adapter, are redundant in this project.