Most of us have printed a few benchies to test our 3D printers. The intrepid little boat has a variety of features that tax different parts of the printing process. …read more (https://hackaday.com/2021/10/09/when-benchies-fly/)

Hackers and China
https://hackaday.com/2021/10/09/hackers-and-china/

The open source world and Chinese manufacturing have a long relationship. Some fifteen years ago, the big topic was how companies could open-source their hardware designs and not get driven …read more (https://hackaday.com/2021/10/09/hackers-and-china/)

Making Coffee with Hydrogen
https://hackaday.com/2021/10/09/making-coffee-with-hydrogen/

Something of a Holy Grail among engineers with an interest in a low-carbon future is the idea of replacing fossil fuel gasses with hydrogen. There are various schemes, but they …read more (https://hackaday.com/2021/10/09/making-coffee-with-hydrogen/)

Drive High-Impedance Headphones With This Stylish USB DAC
https://hackaday.com/2021/10/09/drive-high-impedance-headphones-with-this-stylish-usb-dac/

For anyone with an interest in building audio projects, it’s likely that an early project will be a headphone amplifier. They’re relatively easy to build from transistors, ICs, or tubes, …read more (https://hackaday.com/2021/10/09/drive-high-impedance-headphones-with-this-stylish-usb-dac/)

Single Event Upsets: High Energy Particles From Outer Space Flipping Bits
https://hackaday.com/2021/10/09/single-event-upsets-high-energy-particles-from-outer-space-flipping-bits/

Our world is constantly bombarded by high-energy particles from various sources, and if they hit in just the right spot on the sensitive electronics our modern world is built on, …read more (https://hackaday.com/2021/10/09/single-event-upsets-high-energy-particles-from-outer-space-flipping-bits/)

Dial A for Arduino
https://hackaday.com/2021/10/09/dial-a-for-arduino/

A lot of phrases surrounding phones don’t make sense anymore. With a modern cellphone, you don’t really “hang up” and there’s certainly no “dial” to be had. However, with [jakeofalltrades’] …read more (https://hackaday.com/2021/10/09/dial-a-for-arduino/)

Borehole Camera Rig Makes Life Easier In Mining
https://hackaday.com/2021/10/09/borehole-camera-rig-makes-life-easier-in-mining/

Much of mining involves digging and drilling holes in the ground. Often, these holes need inspecting, but [Dean Harty] found that existing borehole inspection solutions weren’t up to snuff. Resolution …read more (https://hackaday.com/2021/10/09/borehole-camera-rig-makes-life-easier-in-mining/)

1981 Called, Here’s Your Software
https://hackaday.com/2021/10/10/1981-called-heres-your-software/