Mylar Space Blankets As RF Reflectors
https://hackaday.com/2025/05/15/mylar-space-blankets-as-rf-reflectors/

Metalized Mylar “space blankets” are sold as a survivalist’s accessory, primarily due to their propensity for reflecting heat. They’re pretty cheap, and [HamJazz] has performed some experiments on their RF …read more (https://hackaday.com/2025/05/15/mylar-space-blankets-as-rf-reflectors/)

LACED: Peeling Back PCB Layers With Chemical Etching and a Laser
https://hackaday.com/2025/05/15/laced-peeling-back-pcb-layers-with-chemical-etching-and-a-laser/

https://www.youtube.com/watch?v=RHqN6CTOdzA
" data-image-caption="Exposed inner copper on multilayer PCB. (Credit: mikeselectricstuff, YouTube)
" data-medium-file="https://hackaday.com/wp-content/uploads/2025/05/multilayer_pcb_cnc_machine_mikeselectricstuff.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/05/multilayer_pcb_cnc_machine_mikeselectricstuff.jpg?w=800">Once a printed circuit board (PCB) has been assembled it’s rather hard to look inside of it, which can be problematic when you have e.g. a multilayer PCB of an …read more (https://hackaday.com/2025/05/15/laced-peeling-back-pcb-layers-with-chemical-etching-and-a-laser/)

Automatic Transmission For Manual Transportation
https://hackaday.com/2025/05/15/automatic-transmission-for-manual-transportation/

The drivetrain of most modern bicycles has remained relatively unchanged for nearly a century. There have been marginal upgrades here and there like electronic shifting but you’ll still mostly see …read more (https://hackaday.com/2025/05/15/automatic-transmission-for-manual-transportation/)

Voyager 1’s Primary Thrusters Revived Before DSN Command Pause
https://hackaday.com/2025/05/15/voyager-1s-primary-thrusters-revived-before-dsn-command-pause/

As with all aging bodies, clogged tubes form an increasing issue. So too with the 47-year old Voyager 1 spacecraft and its hydrazine thrusters. Over the decades silicon dioxide from …read more (https://hackaday.com/2025/05/15/voyager-1s-primary-thrusters-revived-before-dsn-command-pause/)

Not a Sewing Machine: A Multimedia Briefcase
https://hackaday.com/2025/05/15/not-a-sewing-machine-a-multimedia-briefcase/

When you think of Singer, you usually think of sewing machines, although if you are a history buff, you might remember they diversified into calculators, flight simulation, and a few …read more (https://hackaday.com/2025/05/15/not-a-sewing-machine-a-multimedia-briefcase/)

Wireless Doorbell Extension Features Home-Wound Coil
https://hackaday.com/2025/05/16/wireless-doorbell-extension-features-home-wound-coil/

Today in the it’s-surprising-that-it-works department we have a ding dong doorbell extension from [Ajoy Raman]. What [Ajoy] wanted to do was to extend the range of his existing doorbell so …read more (https://hackaday.com/2025/05/16/wireless-doorbell-extension-features-home-wound-coil/)

Home-casting Thermoelectric Alloys
https://hackaday.com/2025/05/16/home-casting-thermoelectric-alloys/

If you want to convert heat into electrical power, it’s hard to find a simpler method than a thermoelectric generator. The Seebeck effect means that the junction of two dissimilar …read more (https://hackaday.com/2025/05/16/home-casting-thermoelectric-alloys/)