Collaborate Disseminate
[Mr Innovative] likes to keep his wire harnesses tidy, but it is a pain to neatly wrap cables. So, he automated the process using a combination of milled acrylic and …read more Continue reading Wiring Harness? That’s a Wrap!
We are spoiled with multimeters today. Even the cheapest meter you will get these days is almost surely digital with a tremendous input impedance. But a few decades ago, meters …read more Continue reading In Praise of Old Meters
If you aren’t old enough to remember, the title of this post refers to an old game show where contestants would try to name a tune using the fewest possible …read more Continue reading Linux Fu: Name That Tune
In the 2020s photocopiers are getting a bit exotic, although they are not gone yet. But these days, you are more likely to simply print multiple copies of a document. …read more Continue reading 19th Century Copy Machine: The Cyclostyle
Everyone interested in electronics should build at least one Tesla coil. But be careful. Sure, the high voltage can be dangerous, but the urge to build lots of coils is …read more Continue reading Another Tesla Coil Starts
Older CPUs and some fairly modern microcontrollers are not made to readily support C compilers. Among those are the 1802, some 8-bit PICs, and the 6502 at the heart of …read more Continue reading Putting the C in C64
What looks like a Sinclair ZX81 but runs Forth? If you said a Jupiter ACE, you get a gold star. These are rare because ordinary people in 1982 didn’t want …read more Continue reading Recreating the Jupiter ACE
If you do much practical 3D printing, you eventually need some sort of fastener. You can use a screw to bite into plastic. You can create a clearance hole to …read more Continue reading [Thomas Sanladerer] Gets New Threads
What’s inside a PNG file? Graphics, sure. But how is that graphic encoded? [Evan Hahn] shows you what goes into a single black pixel inside a 67-byte file. Why so …read more Continue reading A Look Inside the Smallest Possible PNG File
Ever notice that the ESP32-S3 doesn’t have a digital-to-analog converter? [Chris] did and asserts that he doesn’t care because he can just use the PDM system to get the same …read more Continue reading No DAC? Try PDM