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This week I felt like doing a nice relaxing soldering kit. This is a version of the good old "clapper" circuit. You can clap your hands ...

After seeing that LED light bulb kit in the last mailbag, I knew I wasn't going to wait very long to build it. And, since there has been ...

A whistle-stop tour of how computers work, from how silicon is used to make computer chips, perform arithmetic to how programs ...

I sat down to sort out the assortment of zener diodes from a mailbag a while back, and this is the result. Sadly, the result is a bit ...

Today I'm building an interesting kit that I got from Universal Solder a few months ago. This is their PLC MEGA328 kit, which has ...

Have you ever wondered what's in those "45 in one sensor kit for Arduino" sets you can find on ebay (and other places)? Me too ...

00:00 - Device Overview 04:56 - ADF4351 Synthesizer Update 06:57 - Device Walk-Through 12:22 - Teardown 18:13 - Frequency ...

I found a beautiful electromechanical calculator at Goodwill in phenomenal condition for once (usually they're filthy and broken ...

Nanotechnology, design, solving problems for diverse target groups, high-tech skills and knowledge of various disciplines are ...

After showing over 90 watts can be output using one of these kit iterations. Elecifun is trying different Op-Amps, different output ...

There are a lot of opinions on the cheap DSO138 oscilloscope, few of them positive. The best thing you can say about it is that it's ...

This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Electronic_engineering 00:01:42 1 Relationship to ...

My good friends at Deft gave me a guided tour of one of their datacenters where I learned about the power, cooling, and backup ...

Let's take a closer look at that cheap USB powered soldering iron I pulled out of this week's mailbag. Can it be fixed? Does it work ...

It's Monday. I'm the guy with mail. Opening time! --- The Links: 10PCS HT7333-A HT7333 3.3V SOT-89 Low Power Consumption ...

Don't do engineering just because other people tell you to. https://discord.gg/xBCj6XzC62 for free extra videos: ...

If you like my stuff please consider supporting me on Patreon: https://www.patreon.com/JohnElliotV Super big thank you to my ...

If you like my stuff please consider supporting me on Patreon: https://www.patreon.com/JohnElliotV Super big thank you to my ...

This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Electrical_engineering 00:01:58 1 History 00:02:46 ...

This video attempts to answer the age-new question: "Can you solder to a silver trace pen on photo paper?" It's also a cursory ...