Free Fresh Article: Thermoelectric Tea Timer
With the compliments of the Elektor Labs and Editorial teams, here comes another previously unpublished article that's free to download by all registered Elektor e-zine readers. "Free Fresh Articles" articles are published on a fortnightly basis in the Elektor e-zine. This time we have a contraption that automatically lifts a tea bag from a cup or glass of hot water after a preset time. It employs energy harvesting meaning the circuit works off the heat energy taken from the hot cup. And yes it contains a microcontroller, this time the extremely accessible ATmega169PA, with an LC display as a peripheral.