How long can you keep an Arduino circuit running on three AA batteries? With careful design, [educ8s] built a temperature sensor that lasts well over a year on a single charge of three 2250 mAH ...
This is the simple Arduino program that detect knock and display the Hello World text to Nokia 5110 LCD. Then, you can find some where to hide your knock module, for me, I put it inside my wood cover ...
These days everyone’s excited about transparent OLED panels, but where’s the love for the classic Nokia 5110 LCD? As the prolific [Nick Bild] demonstrates in his latest creation, all you’ve got to do ...
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