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/

How many of us who have a few decades of adulthood under our belts would like to talk to our 17 year old selves? “Hey kid, it’s all gonna be …read more (https://hackaday.com/2021/10/10/1981-called-heres-your-software/)

Autonomous Ground Effect Vehicle Demonstrator Aims To Speed Up Maritime Shipping
https://hackaday.com/2021/10/10/autonomous-ground-effect-vehicle-demonstrator-aims-to-speed-up-maritime-shipping/

Ground effect vehicles, or ekranoplans, have the advantage of being more efficient than normal aircraft and faster than boats, but so far haven’t been developed beyond experimental prototypes. Fortunately, this …read more (https://hackaday.com/2021/10/10/autonomous-ground-effect-vehicle-demonstrator-aims-to-speed-up-maritime-shipping/)