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/

You don’t have two ears by accident. [Stoppi] has a great post about this, along with a video you can see below. (The text is in German, but that’s what …read more (https://hackaday.com/2021/11/16/binaural-hearing-modeled-with-an-arduino/)

Jigglypuff Sensor Breathes CO2 So You Don’t Have To
https://hackaday.com/2021/11/16/jigglypuff-sensor-breathes-co2-so-you-dont-have-to/

We’ve seen a lot of environmental monitoring projects here at Hackaday. Seriously, a lot. They usually take the form of a microcontroller, a couple sensors, and maybe a 3D printed …read more (https://hackaday.com/2021/11/16/jigglypuff-sensor-breathes-co2-so-you-dont-have-to/)

Quick and (Not Very) Dirty Negative Voltage Supply
https://hackaday.com/2021/11/16/quick-and-not-very-dirty-negative-voltage-supply/