Personal Traffic Light Stops Them In Their Tracks

Working from home can be pretty cool, but if you’re not the only one in the house trying to do it, the whole situation can feel like you’re right back in the office with all those walki…

Little Quadruped Has PCB Spine And No Wiring

Dealing with all the wiring can quickly become a challenge on robots, especially the walking variety which have actuators everywhere. [Eric Yufeng Wu] sidestepped the wiring issue by creating Q8bot…

Building An IR Thermometer That Fits On Your Keychain

Non-contact infrared (IR) thermometers used to be something of an exotic tool, but thanks at least in part due to the COVID-19 pandemic, they’re now the sort of thing you see hanging up near …

ESP-Hosted Turns ESP32 Into Linux WiFi/BT Adapter

While we are used to USB WiFi adapters, embedded devices typically use SDIO WiFi cards, and for good reasons – they’re way more low-power, don’t take up a USB port, don’t re…

Cute Solar Power Gauge Brightens The Day

What’s the first thing you want after installing solar? All the sunshine you can get, of course. Especially if you did it in the wintertime. And what would be more fun than monitoring your po…

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…