The human eye’s color perception is notoriously variable (see, for example, the famous dress), which makes it difficult to standardize colours. This is where spectrophotometers come in: they measure colours …read more (https://hackaday.com/2025/07/19/a-spectrophotometer-jailbreak-to-resolve-colorful-disputes/)

Project Scribe: Receipts for Life
https://hackaday.com/2025/07/20/project-scribe-receipts-for-life/

Here’s a fun project. Over on their YouTube page [Urban Circles] introduces Project Scribe. The idea behind this project is that you can print out little life “receipts”. Notes, jokes, …read more (https://hackaday.com/2025/07/20/project-scribe-receipts-for-life/)

Engine Data Displayed Live On Dash
https://hackaday.com/2025/07/20/engine-data-displayed-live-on-dash/

In the auto world, there are lots of overarching standards that all automakers comply with. There are also lots of proprietary technologies that each automaker creates and uses for its …read more (https://hackaday.com/2025/07/20/engine-data-displayed-live-on-dash/)

8 Bit Mechanical Computer Built from Knex
https://hackaday.com/2025/07/20/8-bit-mechanical-computer-built-from-knex/

Long before electricity was a common household utility, humanity had been building machines to do many tasks that we’d now just strap a motor or set of batteries onto and …read more (https://hackaday.com/2025/07/20/8-bit-mechanical-computer-built-from-knex/)

When a Record Player Doesn’t Work Due to Solid State Grease
https://hackaday.com/2025/07/20/when-a-record-player-doesnt-work-due-to-solid-state-grease/

Normally, mechanical devices like record players move smoothly, with well-greased contact surfaces enabling the tone arm to automatically move, the multi-record mechanism to drop down a fresh disc, and the …read more (https://hackaday.com/2025/07/20/when-a-record-player-doesnt-work-due-to-solid-state-grease/)

Designing an Open Source Multimeter: the HydraMeter
https://hackaday.com/2025/07/20/designing-an-open-source-multimeter-the-hydrameter/

Our hacker [John Duffy] wrote in to let us know about a video he put together to explain the design of his open-source multimeter, the HydraMeter. If you’re interested in …read more (https://hackaday.com/2025/07/20/designing-an-open-source-multimeter-the-hydrameter/)

Hackaday Links: July 20, 2025
https://hackaday.com/2025/07/20/hackaday-links-july-20-2025/

In the relatively short time that the James Webb Space Telescope has been operational, there’s seemingly no end to its list of accomplishments. And if you’re like us, you were …read more (https://hackaday.com/2025/07/20/hackaday-links-july-20-2025/)

Remembering Chiptunes, the Demoscene and the Illegal Music of Keygens
https://hackaday.com/2025/07/20/remembering-chiptunes-the-demoscene-and-the-illegal-music-of-keygens/