If you’ve worked on a project with small LEDs, you know the frustration of determining their polarity. This ingenious LED Probe from [David] packs a lot of useful features into …read more (https://hackaday.com/2025/06/14/led-probe-a-smart-simple-solution-for-testing-leds/)

Laptop Brick is Brought Back from the Brink
https://hackaday.com/2025/06/14/laptop-brick-is-brought-back-from-the-brink/

We’ve all been there. [Kasyan TV] had a universal adapter for a used laptop, and though it worked for a long time, it finally failed. Can it be fixed? Of …read more (https://hackaday.com/2025/06/14/laptop-brick-is-brought-back-from-the-brink/)

Meowsic Keyboard MIDI Adapter Aims for Purrfection
https://hackaday.com/2025/06/14/meowsic-keyboard-midi-adapter-aims-for-purrfection/

Both small children and cats have a certain tendency to make loud noises at inopportune times, but what if there were a way to combine these auditory effects? This seems …read more (https://hackaday.com/2025/06/14/meowsic-keyboard-midi-adapter-aims-for-purrfection/)

The PCB Router You Wish You Had Made
https://hackaday.com/2025/06/14/the-pcb-router-you-wish-you-had-made/

The advent of cheap and accessible one-off PCB production has been one of the pivotal moments for electronic experimenters during the last couple of decades. Perhaps a few still etch …read more (https://hackaday.com/2025/06/14/the-pcb-router-you-wish-you-had-made/)

Adaptive Keyboards & Writing Technologies for One-Handed Users
https://hackaday.com/2025/06/15/adaptive-keyboards-writing-technologies-for-one-handed-users/

After having been involved in an accident, [Kurt Kohlstedt] suffered peripheral neuropathy due to severe damage to his right brachial plexus — the network of nerves that ultimately control the …read more (https://hackaday.com/2025/06/15/adaptive-keyboards-writing-technologies-for-one-handed-users/)

An RC Car Driven with Old 3D Printer Motors
https://hackaday.com/2025/06/15/an-rc-car-driven-with-old-3d-printer-motors/

With the newer generation of quick and reliable 3D printers, we find ourselves with the old collecting dust and cobwebs. You might pull it out for an emergency print, that …read more (https://hackaday.com/2025/06/15/an-rc-car-driven-with-old-3d-printer-motors/)

Smart Lamp Keeps Students on Track with Image Recognition
https://hackaday.com/2025/06/15/smart-lamp-keeps-students-on-track-with-image-recognition/

It’s a common enough problem: you’re hitting the books, your phone dings with a notification, and suddenly it’s three hours later. While you’ve done lots of scrolling, you didn’t do …read more (https://hackaday.com/2025/06/15/smart-lamp-keeps-students-on-track-with-image-recognition/)

Upgrade Your Filament Dryer With a Swiveling Filament Port
https://hackaday.com/2025/06/15/upgrade-your-filament-dryer-with-a-swiveling-filament-port/