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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 ...

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

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 ...

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

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 ...

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

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

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

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

This tutorial deals with the very basics of transistor amplifiers. Starting with different types of transistors, the video focuses on the ...

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 ...

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

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

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.

Hope this helps and let me know what mistakes you've made in the past in the comments :D If you liked this video, Subscribe for ...

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 ...

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

Table Of Content: 00:05 Introduction 01:31 Resistance measurement (direct method) 05:51 DC voltage measurement 09:39 AC ...