Technology

Back to Basic – Mini CNC Plotter

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There are many projects and tutorials related to recycle old CD/DVD players into a mini CNC Plotter based on Arduino.

I have become too concerned with complicated details or new things, and now I should concentrate on basic, simple and important ideas. Getting back to basics, to start learning CNC, today I’d like to share how to easily build your own low-cost Arduino Mini CNC Plotter. With my version, I used the spring part of stapler as a main component for pen lift. During the process of doing this, I have referenced from many sources, studied & tried to clarify some point hard to grasp.

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TinyPilot: Build a KVM Over IP for Under $100

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TinyPilot is my inexpensive, open-source device for controlling computers remotely. It works even before the operating system boots, so I use TinyPilot to install new OSes and debug boot failures on my bare metal homelab servers.

This post details my experience creating TinyPilot and shows how you can build your own for under $100 using a Raspberry Pi.

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S42B closed loop stepper motors – No more layer shifts!

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If you’ve ever had a failed print from a layer shift, you know how frustrating it can be. Traditionally 3D printers use open loop stepper motors, which means if they lose steps, the printer doesn’t know and can’t compensate. The Bigtreetech S42B is a closed loop stepper motor, which means it monitors the position of the stepper and will compensate for errors. This means no more layer shift failures.

The Ultimate Storage Monster: 32 SATA Ports On A Single Motherboard

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Onda has two very peculiar motherboards in the company’s arsenal. The B250 D32-D3 and B250 D32-D3 IPFS motherboards both sport up to 32 SATA ports each.

Chinese motherboard vendors are widely known for creating unorthodox products. For example, Soyo put out an H310C motherboard that supports up to four generations of Intel processors, or Huananzhi, which slapped DDR3 and DDR4 slots on an X99 motherboard. The list of unconventional motherboards continues to expand with Onda’s B250 D32-D3 motherboard.

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Scientists Transform Bricks Into Supercapacitors

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Researchers from Washington University St. Louis have developed a way to turn everyday construction bricks into supercapacitors capable of storing energy. The proof of the concept for transforming ordinary bricks that have been made the same way for thousands of years could hold applications in powering homes or even used as sensors. For example, the bricks could be wired to solar panels to store energy for times when homes lose power.

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