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I spotted this interesting little G8 style LED light in the clearance bin at a local hardware store and it got me curious. Of course ...

Several people (including me) were curious about that cheap inverter from the latest mailbag, so time to dive in and see what its ...

I've got a nice easy kit to play with today. But it's interesting to see how it does what it does. MISTAKE WARNING: the device at the ...

Back in mailbag#80, I received a gift of this T-12 style soldering iron. Now that I've got my hands on some tips for it, I thought I'd ...

Watch this awesome smd soldering practice project featuring both SMD and through-hole components with LDR (Light ...

Learn the difference between Class A, Class B, Class AB, and Class D audio amplifiers in this short video. See how each amplifier ...

An interesting electronic key / employee tracking device. Turns out, it's not too exciting inside, but you never know these things ...

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 ...

In this tutorial, I'll show you the basic soldering techniques, explain the process, and help you avoid common mistakes. First, I'll ...

There were some questions about the cheap charger from last week's mailbag, so let's take a closer look. Here's the datasheet ...

Another assortment of goodies for your perusal. This time, including one special request from my generous patreon supporters!

No-nonsense breakdown of the original ESP32, ESP32-S3, ESP32-C3 and ESP32-C6, ESP32-H2, and upcoming P-series chips!

In this video tutorial series, young students learn about electronics by making hands-on projects. In this video, we will learn about ...

New version available at: http://www.youtube.com/watch?v=f5fwdGFBrwU Table of content: 00:05 Introduction 00:32 Jacks / test ...

February 24, 2025 -- In this episode of Chalk Talk, Sarah Alqaysi from Siemens and Amelia Dalton investigate the Siemens ...

I found this early '90s era power supply on it's way to the scrap heap, and I got curious about what's under that massive heatsink.

This is a bit more obscure and niche than the stuff I sometimes look at. This is the handheld control keypad from a Harris ...

I haven't done hot-air reflow at home before. Can I manage to get an SOT-23-6 package onto a breakout board?

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 ...