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Step 8Achtung!
A short video of this circuit operated with the lemon battery is available on YouTube.
AVR Microcontrollers are very frugal devices and can operate at voltage down to 1.8V. The current consumption is also very small and the entire circuit including the LED current can be managed with a fruit battery.
Take care to dispose the materials, specially the zinc strips carefully without contaminating your surroundings. Do not reuse the lemons for any purpose after the experiment. Specifically, do not eat the used lemons after the experiment. Although this experiment is harmless and can be performed by children, it is best done under adult supervision. The authors cannot be held responsible for any injury resulting out of such an experiment.
AVR Microcontrollers are very frugal devices and can operate at voltage down to 1.8V. The current consumption is also very small and the entire circuit including the LED current can be managed with a fruit battery.
Take care to dispose the materials, specially the zinc strips carefully without contaminating your surroundings. Do not reuse the lemons for any purpose after the experiment. Specifically, do not eat the used lemons after the experiment. Although this experiment is harmless and can be performed by children, it is best done under adult supervision. The authors cannot be held responsible for any injury resulting out of such an experiment.
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Can you use the lemons for the same experiment again?