Dog Plays Chess On ESP32

The ESP32 is s remarkably powerful microcontroller, where its dual-core processor and relatively high clock speed can do some impressive work. But getting this microcontroller designed for embedded…

Building A Diet Coke Button

[mars91] had an interesting problem to solve—his girlfriend often requested Diet Coke, but yelling for one across the apartment was frustrating and impractical. A dedicated Diet Coke button seemed …

Back To The Future Of Texting: SMS On A Panasonic Typewriter

Among us Hackaday writers, there are quite a few enthusiasts for retro artifacts – and it gets even better when they’re combined in an unusual way. So, when we get a tip about a build l…

From Felt To Fate: Building Your Own Sorting Hat

Ever wondered how it feels to have the Sorting Hat decide your fate? [Will Dana] wanted to find out, so he conjured a bit of Hogwarts magic, and crafted a fully animatronic Sorting Hat from scratch…

Hacked Ultrasonic Sensors Let You See With Sound

If you want to play with radar — and who could blame you — you can pretty easily get your hands on something like the automotive radar sensors used for collision avoidance and lane dete…

Exercise Wheel Tracker Confirms Suspicions About Cats

What do cats get up to in the 30 minutes or so a day that they’re awake? Being jerks, at least in our experience. But like many hackers, [Brent] wanted to quantify the activity of his cat, an…

CapibaraZero firmware enables low-cost Flipper Zero alternatives based on ESP32-S3 hardware - CNX Software

CapibaraZero open-source firmware offers a low-cost alternative to Flipper Zero for ESP32-S3 hardware such as the LilyGO T-Embed CC1101.

Fully Submerge This Modernized PH Sensor

There’s a school of thought that says you shouldn’t mess around with a solution that’s already working, but that’s never seemed to stop anyone in this community. When [Skye]…

Keebin’ With Kristina: The One With The TRON Keyboard

[Folaefolc] was craving a new keyboard build a few weeks ago and got inspired by the humble 3.5″ floppy disk. So much so that he decided to make a split keyboard with each half having the exa…

ESP32 Hosts A USB Keyboard In This Typewriter

Did you know the ESP32 can be a USB host? Well it can, and [Volos] uses host mode to build this fun little word processor. The venerable ESP32 has a well-known USB device mode. Anyone who has progr…

WiFi Status Indicator Keeps Eye On The Network

These days, most of us take the instant availability of a high-speed link to the Internet for granted. But despite all of the latest technology, things still occasionally go pear-shaped — mea…

Open-Source Robot Transforms

Besides Pokémon, there might have been no greater media franchise for a child of the 90s than the Transformers, mysterious robots fighting an intergalactic war but which can inexplicably change int…

Flaming Power Wheels Skeleton Wins Halloween

When the project description starts with the sentence “I use an RC remote and receiver, an esp32, high-current motor drivers, servos, an FPV camera, and a little propane”, you know that…

How Purdue Hackers Made A Big Sign That They’re Really Proud Of

Let’s say you’ve got a fun little organization that does things together under a collective branding or banner. Maybe you want to celebrate that fact with some visually appealing signag…

Bakelite To The Future – A 1950s Bluetooth Headset

A decade ago, [Jouke Waleson] bought a Dutch ‘model 1950’ PTT (The Dutch Postal Service) rotary-dial telephone of presumably 1950s vintage manufactured by a company called Standard Elec…

An International Hackerspace Map

If you’re looking for a hackerspace while on your travels, there is more than one website which shows them on a map, and even tells you whether or not they are open. This last feature is powe…

Pac-Man Ghost Helps With Air Quality Sensing

In the past, building construction methods generally didn’t worry much about air quality. There were enough gaps around windows, doors, siding, and flooring that a house could naturally &#822…

The Design Process For A Tiny Robot Brain

As things get smaller, we can fit more processing power into devices like robots to allow them to do more things or interact with their environment in new ways. If not, we can at least build them f…

Forget Flipper, How About Capybara?

One of the hacker toys to own over the last year has been the Flipper Zero, a universal wireless hacking tool which even caused a misplaced moral panic about car theft in Canada. A Flipper is cool …