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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 ...

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

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

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, ...

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

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

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

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 ...

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

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

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 mechanical calculator is the Corema Portative MC 15. It was made in Geneva, Switzerland, from 1952 till maybe 1960.

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

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