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There's nothing micro about this super-sized Arduino Uno

It's 7x the size of the regular board Arduino boards power everything from robots to RGB lights, but they're a little on the ...
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VU meter DIY kit with LEDs | LM3915N-1 LED driver

This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels into the LEDs just like any audio level bar indicator will do. It is simple ...

I tested 3 simple energy-monitoring tools to find my home's biggest power drains

Using the ATX 9801 is easy -- plug one end into a mains outlet, and it acts like a short extension lead with a digital display. The socket on the front accepts pretty much every power plug worldwide, ...

How I monitored my home's biggest power drains in real time - 3 simple methods you can use

Using the ATX 9801 is easy -- plug one end into a mains outlet, and it acts like a short extension lead with a digital display. The socket on the front accepts pretty much every power plug worldwide, ...