Pluto Spectrum Analyzer Uses Command Line
https://hackaday.com/2021/11/15/pluto-spectrum-analyzer-uses-command-line/

If you don’t care about shortwave frequencies, the PlutoSDR is a great deal. The device is supposed to be an evaluation board for Analog Device’s radio chips, but it does …read more (https://hackaday.com/2021/11/15/pluto-spectrum-analyzer-uses-command-line/)

Making Your Own Touchpad With PWM and Rust
https://hackaday.com/2021/11/16/making-your-own-touchpad-with-pwm-and-rust/

The modern touchpads are incredible feats of engineering, with everything from complex signal processing for noise and tremendous economies of scale driving prices low. So [Kevin] decided to see if …read more (https://hackaday.com/2021/11/16/making-your-own-touchpad-with-pwm-and-rust/)

For All Their Expense, Electric Cars Are Still The Cheapest
https://hackaday.com/2021/11/16/for-all-their-expense-electric-cars-are-still-the-cheapest/

A criticism that we have leveled at the move from internal combustion vehicles to electric ones is that their expense can put them well beyond the range of the not-so-well-heeled …read more (https://hackaday.com/2021/11/16/for-all-their-expense-electric-cars-are-still-the-cheapest/)

Tech in Plain Sight: Eyeglasses
https://hackaday.com/2021/11/16/tech-in-plain-sight-eyeglasses/

Glasses wearers, try a little experiment. Take off your glasses and look at this page or, at least, at something you can’t see well without your glasses. Now imagine if …read more (https://hackaday.com/2021/11/16/tech-in-plain-sight-eyeglasses/)

3D Printed Marble Music Machine Looking Good Already
https://hackaday.com/2021/11/16/3d-printed-marble-music-machine-looking-good-already/

https://www.youtube.com/watch?v=6uTZwiOGUgo
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2021/11/Snap-2021-11-14-at-17.19.33.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2021/11/Snap-2021-11-14-at-17.19.33.png?w=800">Inspired by the enormous marble music machines from the staggeringly talented [Wintergatan] and the marble run builds by [Daniel de Bruin], [Ivan Miranda] has been busy again building a largely …read more (https://hackaday.com/2021/11/16/3d-printed-marble-music-machine-looking-good-already/)

Microplastics Are Everywhere: Land, Sea and Air
https://hackaday.com/2021/11/16/microplastics-are-everywhere-land-sea-and-air/

Plastics took off in the 20th century, with the new class of materials finding all manner of applications that metal, wood and paper simply couldn’t deliver on. Every field from …read more (https://hackaday.com/2021/11/16/microplastics-are-everywhere-land-sea-and-air/)

Binaural Hearing Modeled with an Arduino
https://hackaday.com/2021/11/16/binaural-hearing-modeled-with-an-arduino/