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Open Hardware/Modding: Retro, Linux, Arduino, and More

Submitted by Roy Schestowitz on Thursday 23rd of December 2021 11:57:59 PM Filed under
Hardware
  • WS2812s On A 6502 | Hackaday

    We can still remember when the WS2812 LED first came into ourconsciousness, way back in the mists of time. The timing diagrams in the datasheet-of-questionable-veracity made it sound quite tricky, with tight timing tolerances and essentially a high-speed two-bit PWM data protocol at 500 kHz. It was a challenge to bit-bang with an ATtiny85 back then, but there’s no way something as old and crusty as an Apple II would be up to snuff, right?

    [Anders Nielsen] took up the challenge of getting the venerable 6502 processor to drive Neopixels and won! After all, if the chip is good enough for Bender and the Terminator T-800, it should be able to blink some colored LEDs, right? The secret sauce is shift registers!

  • Dual 10GbE router supports WiFi 6 (AX3600) - CNX Software

    There’s no information about software, but we can assume the system runs a Linux OS based on Qualcomm SDK or OpenWrt.

  • Back-to-Back Belts Drive Filament In This Unique Extruder Design | Hackaday

    It’s hard to say when inspiration will strike, or what form it’ll take. But we do know that when you get that itch, it’s a good idea to scratch it, because you might just end up with something like this cool new design for a 3D printer extruder as a result.

    Clearly, the world is not screaming out for new extruder designs. In fact, the traditional spring-loaded, toothed drive wheel on a stepper really does the job of feeding filament into a printer’s hot end just fine, all things considered. But [Jón Schone], aka Proper Printing on YouTube, got the idea for his belt-drive extruder from seeing how filament manufacturers handle their products. His design is a scaled-down version of that, and uses a pair of very small timing belts that run on closely spaced gears. The gears synchronize the movement of the two belts, with the filament riding in the very narrow space between the belts. It’s a simple design, with the elasticity of the belt material eliminating the need for spring pre-loading of the drive gears.

  • Arduino IoT Cloud Scheduler Enhances Automation for Your Projects

    Cloud Scheduler is a brand new feature that’s now live as part of your Arduino Cloud platform. It’s a powerful addition that adds a whole new dimension of automation and control to your projects.

  • Retrofit your light switch with this remote-controlled device | Arduino Blog

    It can be extremely annoying and frustrating to finally get comfortable somewhere only to realize that you forgot to turn off a light, thus requiring a short journey to and from the wall switch. Mechanical engineering student and Instructables user alanmerritt ran into the same problem in his dorm room, so he responded by creating a device that could remotely operate a light switch without any modifications to the switch itself.

    The first step in designing this remote control device was measuring the fixture and modeling it in CAD, after which Alan made a small rack-and-pinion mechanism that uses a servo motor to rotate a gear and thus lift an attached slider up or down. He also 3D printed an enclosure that surrounds the otherwise ugly electronics, hiding them from the view of potential visitors.

  • A Simple 3D Printed Gear Clock Shows Off How It Works | Hackaday

    Analog clocks are beautiful things inside, using ornate gear trains to keep track of time in a dance of mechanical beauty. However, all too often, the complexity is hidden inside. This gear clock design from [Tada3], however, proudly shows off its workings.

    A small stepper motor is used to run the clock’s movement, a small part of the 28BYJ-48 variety. The motor is driven once per second, making the gear train tick along in a rather compelling way that is somehow more visually interesting. Of course, with some modification to the design, continuous motion could easily be done as well.

    The stepper motor is driven by an Arduino Nano, which also handles the timekeeping. One thing that’s missing is a real-time clock, something that should be added to the design if you wish it to keep accurate time. As it is, the included Arduino sketch simply uses the delay() function to time the stepping of the motor. It makes the clock tick along, but will quickly drift out of sync.

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