Putting the C in C64
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
Author Archives: Al Williams
Recreating the Jupiter ACE
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
[Thomas Sanladerer] Gets New Threads
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
A Look Inside the Smallest Possible PNG File
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
No DAC? Try PDM
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
Pinball with No Computers
Pinball machines were the video games of their day. Back when they were king, there were no microcontrollers — everything was electromechanical. We know from experience that fixing these was …read more Continue reading Pinball with No Computers
You Wouldn’t 3D Print a Toilet…
[Emily The Engineer] wanted a 3D printing project, so naturally, she decided to print a working toilet. Check out the colorful contraption in the video below. At the start, we …read more Continue reading You Wouldn’t 3D Print a Toilet…
Peltier Mini Fridge for Class by Class
How do you keep a few sodas in your classroom cool? Well, if you are teacher [Ethan Hunt], you have your students design and build a solid-state mini refrigerator that …read more Continue reading Peltier Mini Fridge for Class by Class
Your Home Mainframe
We miss the days when computers looked like computers. You know, blinking lights, rows of switches, and cryptic displays. [Phil Tipping] must miss those days too since he built PlasMa, …read more Continue reading Your Home Mainframe
Copper Coating 3D Prints
We would all like to 3D print in metal, but for now, the equipment to do that is out of reach for most of us. Instead of dealing with powder …read more Continue reading Copper Coating 3D Prints