Collaborate Disseminate
For an old CPU, finding all the valid instructions wasn’t very hard. You simply tried them all. Sure, really old CPUs might make it hard to tell what the instruction …read more Continue reading Undocumented x86 Instructions Allow Microcode Access
[Thomas] is always up to some kind of 3D printing project. His latest? A fully 3D printed speaker. This is possible because of designs by [Paul Ellis] that use 3D …read more Continue reading Speaker is Fully 3D Printed
Early 3D printers used ABS, but bad fumes and warping made most people go to PLA. However, PETG has a lot of the great properties of ABS along with some …read more Continue reading PCTG Filament Has Interesting Properties
[Mr Innovative] needed to wind some coils, and decided to make a machine to do the work. Making such machines has become a lot easier over the years. There was …read more Continue reading Coil Winding Machine Makes it Easy
Last month in my hands-on review of the Ortur Laser I hinted that I had done a few things to make it work a little better. I made three significant …read more Continue reading Hacking the Ortur Laser with Spoil Board, Z-Height, and Air Assist
We wonder if [Carl Bugeja] was looking at a 3D printer’s heated bed when he got the idea to create a PCB reflow heater using a PCB. He tried a …read more Continue reading PCB Reflow with a PCB
FPGA guru [Max Maxfield] recently took a look at the XLR8 (pronounced accelerate) board from a company called Alorium. On the surface, it looks like another Arduino UNO clone. But …read more Continue reading Arduino and FPGA Done Differently
[Ted] recently demonstrated the analysis of an RL circuit using a piece of paper, Octave, and LTSpice. If you prefer, the Octave code should work fine in MATLAB, as well. …read more Continue reading Phasors in LTSpice
If you watch many espionage or terrorism movies set in the present day, there’s usually a scene where some government employee enhances a satellite image to show a clear picture …read more Continue reading Science Officer…Scan for Elephants!
If you enjoy simulating circuits, you’ve probably used LTSpice. The program has a lot of powerful features we tend to not use, including the ability to make custom components that …read more Continue reading Custom Components in LTSpice