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Open Hardware/Modding: Arduino and RISC-V

Submitted by Roy Schestowitz on Tuesday 21st of June 2022 10:07:59 PM Filed under
Hardware
  • This high-speed Arduino pen plotter creates drawings in mere minutes | Arduino Blog

    Pen plotting projects are everywhere nowadays, with the vast majority using a couple of stepper motors for moving the writing utensil and a servo to raise or lower it. But they are quite slow due to the lack of rigid assembly and because the servo motor takes around a second to move the pen. This problem is what drove YouTuber IV Projects to create a very novel design that swaps out the servo for another stepper motor and drastically increases drawing speed.

    Just like most other pen plotters, the X-axis is driven by a NEMA17 stepper motor with a timing belt attached to the central pen carriage. However, the Y-axis takes a different approach by relying on a pair of rollers that are covered in 120-grit sanding bands, which help to grab the paper securely and move it whenever the stepper motor rotates the drive wheel. This helps to minimize slipping compared to rubber rollers and is much faster than a belt-driven design.

  • RISC-V Announces First New Specifications of 2022, Adding to 16 Ratified in 2021 | RISC-V International
  • Think Silicon to Unveil Industry’s First RISC-V 3D GPU at Embedded World 2022

    Think Silicon®, a leader in ultra-low power graphics IP, will showcase the industry’s first RISC-V-based GPU – the NEOX™ G-Series & A-Series – at Embedded World 2022. The company will also introduce the NEMA®|pico-VG, the latest in the NEMA®|GPU-Series for MCU-driven SoCs – which supports rich vector graphics and improves system efficiency by offloading CPU utilization up to 95%.

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