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/)

Axial Flux Motors for Electric Vehicles
https://hackaday.com/2021/10/10/axial-flux-motors-for-electric-vehicles/

In the everything old is new again folder, [Lesics] has a good overview of axial flux motors. These are promising for electric vehicles, especially aircraft, since the motors should have …read more (https://hackaday.com/2021/10/10/axial-flux-motors-for-electric-vehicles/)

A Bike Trailer For Any Expedition
https://hackaday.com/2021/10/10/a-bike-trailer-for-any-expedition/