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Crazy Watch – Exploring electronics fundamentals

“It is good to have an end to journey toward; but it is the journey that matters, in the end.” ― Ernest Hemingway A few days ago my son came back from school with something that he had build in a...

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555 Timer Monostable Multivibrator Circuit

This  is a side project from my endeavor to program an Arduino Uno wirelessly (over Bluetooth) using a cheap HC06 JY-MCU Blueetooth Module I got from eBay. In order to kick off the Arduino bootloader...

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A circuit to use 2 single cell li-po / li-on batteries in series and charge...

I was looking for an option to create a circuit with a switch, so I can use two single cell li-on Nokia cell phone batteries in series, but charge them in parallel through a USB charger. The idea is to...

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