Weekends can be busy for a lot of us, but sometimes you have one gloriously free and full of possibilities. If that’s you, you might consider taking a gander at …read more (https://hackaday.com/2025/09/06/no-plans-for-the-weekend-learn-raytracing/)

Camera and ChArUco Keep the Skew Out of Your 3D Prints
https://hackaday.com/2025/09/06/camera-and-charuco-keep-the-skew-out-of-your-3d-prints/

Do you or a loved one suffer from distorted 3D prints? Does your laser cutter produce parallelograms instead of rectangles? If so, you might be suffering from CNC skew miscalibration, …read more (https://hackaday.com/2025/09/06/camera-and-charuco-keep-the-skew-out-of-your-3d-prints/)

Reverse Engineering a (Toy) Fire Engine
https://hackaday.com/2025/09/06/reverse-engineering-a-toy-fire-engine/

Your kid has a toy remote control fire truck. You have an RTL SDR. See where this is going? [Jacob] couldn’t resist tearing into the why and how of the …read more (https://hackaday.com/2025/09/06/reverse-engineering-a-toy-fire-engine/)

Teardown of a Cheapish EBL Multi-Cell NiMH Charger
https://hackaday.com/2025/09/06/teardown-of-a-cheapish-ebl-multi-cell-nimh-charger/

People think about NiMH cell chargers probably as much as they think about batteries, unless it’s time to replace the cells in whatever device they’re installed in. This doesn’t make …read more (https://hackaday.com/2025/09/06/teardown-of-a-cheapish-ebl-multi-cell-nimh-charger/)

Anker Soundcore Space A40 Earbuds Teardown
https://hackaday.com/2025/09/07/anker-soundcore-space-a40-earbuds-teardown/

Wireless earbuds are notoriously tiny. Want to see inside? [MCH170] did and published a Soundcore Space A40 Teardown. In this teardown, you’ll see inside the charging case and one of …read more (https://hackaday.com/2025/09/07/anker-soundcore-space-a40-earbuds-teardown/)

Theremin-Style MIDI Controller Does It With Lasers
https://hackaday.com/2025/09/07/theremin-style-midi-controller-does-it-with-lasers/

Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at [aritrakdebnath2003]’s MIDI THEREMIN, we see it works differently, but it …read more (https://hackaday.com/2025/09/07/theremin-style-midi-controller-does-it-with-lasers/)

Image Recognition on 0.35 Watts
https://hackaday.com/2025/09/07/image-recognition-on-0-35-watts/

Much of the expense of developing AI models, and much of the recent backlash to said models, stems from the massive amount of power they tend to consume. If you’re …read more (https://hackaday.com/2025/09/07/image-recognition-on-0-35-watts/)

Retrotechtacular: Exploring the Moon on Surveyor 1
https://hackaday.com/2025/09/07/retrotechtacular-exploring-the-moon-on-surveyor-1/