Tag: Arduino Pro Mini

Running on Batteries

Featured image by Andreluiz Cunha from Pixabay.

Running on batteries does not carry your Arduino project very far? Well, when you want to run an Arduino project on batteries, you have to spend some thoughts on minimizing power consumption. Here we will look at what you can do when you use an AVR MCU. Often you will be able to reduce the average current consumption to a few microamps!

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Another Piece of the Puzzle

For a recent geocache, which is a tribute to the well-known Tetris game, I wanted people to solve a simple physical puzzle (as shown in the image above). As a reward they get a code that they can use to open a box. So, what do you have to do to make things work? And how do you make sure that you do not have to change batteries for the next 20 years?

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