Some of you may remember a recent project that featured on these pages, a 555 timer reproduced using vacuum tubes. Its creator [Usagi Electric] was left at loose ends while waiting for a fresh PCB …
Human respiration takes in oxygen and in turn, we exhale carbon dioxide. Thus, an uptick of carbon dioxide levels around us can indicate we’re in the presence of other humans, and also, perha…
We’ve grown to expect seeing mechatronics project incorporate a standard complement of components, things like stepper motors, Arduinos, lead screws, timing belts and pulleys, and aluminum ex…
I have developed a hardware and software system that displays the equatorial coordinate system of an astronomical telescope mount using the self-made computer PERSEUS-9. The features of this development are as follows. 1) The equatorial mount for the astronomical telescope is made by myself using a motorized rotary stage. 2) I made my own motor controller for an equatorial mount with a simple logic configuration. 3) Display the right ascension, declination and sidereal time of the equatorial mount on my homemade computer PERSEUS-9. As a result, the self-built mount system obtained a slewing speed of up to 1024 times faster than the tracking speed and a positional accuracy of about 1% with respect to the amount of movement. A position display update rate of 1.1 times per second is obtained.
ZX81 Mechanical Keyboard. Contribute to swetland/zx81-keyboard development by creating an account on GitHub.
Linux is generally considered the go-to OS for under powered computers. Wanting to challenge the preconceived notion that Linux requires ‘a computer made in the last 20 years,’ [Dmitry]…
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[Sergey Lyubka] put together this epic guide for bare-metal microcontroller programming. While the general concepts should be applicable to most any microcontroller, [Sergey]s examples specificall…
Last month we brought word of the IKEA VINDRIKTNING, a $12 USD air quality sensor that could easily be upgraded to log data over the network with the addition of an ESP8266. It only took a couple o…
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They lie at the heart of every fidget spinner and in every motor that runs our lives, from the steppers in a 3D printer to the hundreds in every car engine. They can be as simple as a lubricated bu…
A two-storey rear addition to a classic Edwardian-era home is sympathetic to its origins, but unashamedly modern at the same time.
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