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Open Hardware/Modding: ESP32, Raspberry Pi Etc.
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CNX Software ☛ Desktop operating systems for ESP32-P4-based “PCs” – Meet Sylphide OS and Bare Metal, Do Stuff (BMDS)
We’ve recently written about the P4 Launcher project that offers a desktop PC-like and/or retro-gaming experience to ESP32-P4 boards with applications stored on a microSD card and loaded into PSRAM when they run. However, I’ve recently been tipped about two new projects that go even further and aim to provide a desktop OS for microcontrollers, both currently focusing on the Olimex ESP32-P4-PC board with HDMI, Ethernet, and USB ports: Sylphide OS and Bare Metal, Do Stuff (BMDS). Sylphide OS – A Macintosh-like desktop for ESP32-P4, RP2350, and ESP32 Thomas Capricelli (Orzelf) has developed Sylphide OS as an operating system for computers based on microcontrollers.
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Tom's Hardware ☛ Mechatronics student builds 3D printer made from 92% LEGO for less than $180
A mechatronics engineering student made an open-source 3D printer, 92% of which is LEGO, and can print a decent benchy despite the imprecise LEGO leadscrews.
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peppe8o ☛ 10-Segment LED Bar with Raspberry Pi Pico 2 W: MicroPython, Wi-Fi & Current Benchmarks
In this tutorial, I will connect a 10-segment LED bar to a Raspberry Pi Pico, display patterns and percentages with MicroPython, and add optional browser control with a Pico 2 W.
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Hackaday ☛ Making CO₂ Sensors Fail Visibly, Not Silently
The solution was for [William] to change how the sensors are treated so a faulty sensor isn’t hidden behind apparently-good values, and the sensor itself flashes a visible fault LED in the case of a problem.
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Hackaday ☛ A Hazeltine 1420 Lives Again
There was a time when buying a computer also meant picking out a compatible terminal. There were many to choose from, some good and some bad. While we were partial to TeleVideo, other well-known names included Lear Siegler and ADDS. There was also Hazeltine, a well-known brand that could emulate many other terminals. [The Byte Attic] had an unusable Hazeltine 1420, and finally got around to getting it working again.
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Sal ☛ Fixed our gas fireplace insert
Once I got into the lower back of the unit, I saw that the wire carrying the spark charge was indeed shorting out against a metal base plate. In fact, the insulation around that wire had completely baked off, so the bare wire was resting against that plate. Not great.