In the 125 years since Marconi made his first radio transmissions, the spectrum has been divvied up into ranges and bands, most of which are reserved for governments and large …read more (https://hackaday.com/2021/10/19/the-low-down-on-long-wave-unlicensed-experimental-radio/)

The Quadrivium EnsembleBot Is A Labour Of Love
https://hackaday.com/2021/10/19/the-quadrivium-ensemblebot-is-a-labour-of-love/

https://hackaday.com/wp-content/uploads/2021/10/Snap-2021-10-10-at-22.29.25-rect.png
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2021/10/Snap-2021-10-10-at-22.29.25-rect.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2021/10/Snap-2021-10-10-at-22.29.25-rect.png?w=800">The Quadrivium EnsembleBot project is a mashup between old school musical instruments and the modern MIDI controlled world. Built by a small team over several years, these hand crafted instruments …read more (https://hackaday.com/2021/10/19/the-quadrivium-ensemblebot-is-a-labour-of-love/)

VCF East Roars Back to Life
https://hackaday.com/2021/10/19/vcf-east-roars-back-to-life/

It didn’t take long to realize that the 2021 Vintage Computer Festival East — returning to the InfoAge Science and History Museum in Wall, New Jersey after being held virtually …read more (https://hackaday.com/2021/10/19/vcf-east-roars-back-to-life/)

Turning Old Masks into 3D Printer Filament
https://hackaday.com/2021/10/19/turning-old-masks-into-3d-printer-filament/

Disposable masks have been a necessity during the COVID-19 pandemic, but for all the good they’ve done, their disposal represents a monumental ecological challenge that has largely been ignored in …read more (https://hackaday.com/2021/10/19/turning-old-masks-into-3d-printer-filament/)

ESP32 Clock Pushes Outrun Graphics over Composite
https://hackaday.com/2021/10/19/esp32-clock-pushes-outrun-graphics-over-composite/

We’ve covered plenty of clocks powered by the ESP32, but this one from [Marcio Teixeira] is really something special. Rather than driving a traditional physical display, the microcontroller is instead …read more (https://hackaday.com/2021/10/19/esp32-clock-pushes-outrun-graphics-over-composite/)

The Calls Are Coming From Inside the House (or Workshop)
https://hackaday.com/2021/10/19/the-calls-are-coming-from-inside-the-house-or-workshop/

Hot on the heels of their carbon microphone build a few years ago, [Simplifier] strung up a two-phone network between the house and the workshop. Both telephones are completely DIY …read more (https://hackaday.com/2021/10/19/the-calls-are-coming-from-inside-the-house-or-workshop/)

Sign Detects RF to Show You are on the Air
https://hackaday.com/2021/10/19/sign-detects-rf-to-show-you-are-on-the-air/

Like a lot of hams, [Stuart] wanted an “on the air” sign. These signs often connect to a PTT switch or maybe an output from the transmitter that also does …read more (https://hackaday.com/2021/10/19/sign-detects-rf-to-show-you-are-on-the-air/)

Flickering Jack o’ Lantern Is An Easy Beginner Build
https://hackaday.com/2021/10/19/flickering-jack-o-lantern-is-an-easy-beginner-build/