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

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 ...

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 ...

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

#electronics #inventory #stock I moved from a spreadsheet system to PartsBox to list all my electronics parts list and connect ...

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

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

The mail is here! The mail is here!! -----links----- Arduino keypad 4 Button Key Module Switch Keyboard for UNO MEGA2560 ...

Want to start building electronics but don't know where to start? In first video, we'll take the first step by learning about the ESP32, ...

The Dacometer 908 is a mechanical calculator made in Denmark between 1950 and 1952. It is a key-driven machine similar to ...

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

The pile of stuff continues to grow with another mailbag. As promised, here's the links: ...

'twas the mailbag before Christmas and all through the shop, the tinkerers were drinking and checking the mail. The links: New ...

Semiconductors are in everything from your cell phone to rockets. But what exactly are they, and what makes them so special?

Invented back in the 1960s, CMOS became the technology standard for integrated circuits in the 1980s and is still considered the ...

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

There are multiple ways to drive a MOSFET and each has it's own usecase. But what are the differences, the pros and the cons?

I love yard sale season. So many interesting thing and such cheap prices (most of the time). This week I picked up this used ...

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.

Another Monday, another beer. Oh yeah. And the mail... ----- Auto Universal Connector Electrical Drill Bit Cable Wire Quick ...

D'ya remember that super cheap fiberoptic power meter I got in the last mailbag? It's back for a closer look and a quick ...

Time to take a closer look at that cheap 3 port USB charger that I got in mailbag #57. Several people in the comments pointed out ...

This tutorial deals with the very basics of resonance circuits. Starting with an explanation of capacitances, inductors and their ...

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