A Telegraph Interface For The Hacker Hotel 2024 Badge

Hacker Hotel is a small Dutch hacker event that takes place, as its name suggests, in a hotel. It’s a welcome high point in the damp of a north-west-European winter, and attendees come to its…

DIY Pocket PONG Breaks The Mobile Spell

[Minikk], aka [Athul] is about to enter 10th grade and reports that they and their contemporaries are eschewing boring mobile games for 90s stuff and old games like PONG. Well, we already knew the …

Tiny Motion Detection Alarm Does The Trick

If you have mischievous children or forgetful elderly in your life, you might want to build a couple of these tiny motion detection alarms to help keep them out of harm’s way. Maybe you want …

The Egyptian Coin Box ‘Trick’

[James Stanley] likes to spend time making puzzles and gadgets for escape rooms, and decided for a change to try their hand at a bit of magic. The idea was to construct a ‘magic box’, i…

Tiny Orrery Keeps The Planets In Their Places

[Frans] claims to have made the world’s smallest orrery. We won’t take a position on that — such things are best left up to the good folks at Guinness. But given that the whole th…

Run Linux By Emulating RISC-V On A RISC-V Microcontroller

For years it was a given that it was impossible to run a Linux based operating system on a less powerful computer whose architecture lacked a memory management unit. There were projects such as uCL…

A Fancy Connected Caliper For Not A Lot

An essential for the engineer is a decent caliper, to measure dimensions with reasonable accuracy. Some of us have old-fashioned Vernier scales, while many up-to-date versions are electronic. When …

Low-Power Wi-Fi Includes E-Paper Display

Designing devices that can operate in remote environments on battery power is often challenging, especially if the devices need to last a long time between charges or battery swaps. Thankfully ther…