Collaborate Disseminate
Reading is big in Québec, and [pepelepoisson]’s young children have access to a free mini library nook that had seen better days and was in dire need of maintenance and refurbishing. In the process of repairing and repainting the little outdoor book nook, he took the opportunity to install a …read more
Continue reading Mini Library for Kids Gets Blinky Lights and Solar Upgrade
[Erich Styger] owns a Charmhigh CHM-T36VA pick and place machine, which he describes as well-built and a great value of hardware for the money. However, the software end is less impressive, with a proprietary controller that is functional but not great. The good news is that it is possible to …read more
Continue reading How To Retrofit a Pick and Place Machine For OpenPnP, in Detail
[Nick Price] had a wonderful concept for a DEFCON badge: a device that worked a lot like a directional Geiger counter, but chirped at detecting WiFi deauthentication packets instead of radiation. That’s a wild idea and it somehow slipped past us last year. Why detect such a thing? Well, the …read more
Continue reading Great Badge Concept: A “Geiger Counter” for WiFi Deauthentication Frames
Not long ago, Boston Dynamics’ Spot finally went on sale, meaning the dog-like robot can now be purchased online. Previously it was available only to be leased by early adopters willing to pay to see what the robot had to offer. Pricing was tucked behind an NDA, and Spot could …read more
Continue reading Boston Dynamics’ Spot Robot Gets a Price Tag
E-paper displays are unusual in that power is only needed during a screen update. Once the display’s contents have been set, no power whatsoever is required to maintain the image. That’s pretty nifty. By making the display driver board communicate wirelessly over near-field communication (NFC) — which also provides a …read more
Continue reading Hands On With a Batteryless E-Paper Display
The demo code for [XTronical]’s ESP32-based SD card music player is not even 40 lines long, though it will also require a few economical parts before it all works. Nevertheless, making a microcontroller play MP3s (and other formats) from an SD card is considerably simpler today than it was years …read more
Continue reading ESP32 Becomes Music Player In Under 40 Lines of Code
Dremel has been helping people fit square pegs into round holes for years, and [concretedog] saw that the Dremel 220 Workstation — a piece of hardware similar to a drill press — could be convinced to hold a cheap soldering iron just as easily as it holds a rotary tool. …read more
Continue reading Dremel Workstation’s New Job: Applying Threaded Inserts With Cheap Soldering Iron
[Facelesstech] owns an SJCAM SJ4000 action camera, but the internal battery was no longer functional. Not wishing to buy a replacement and unwilling to hook up an ungainly USB cable to feed power, the solution was to design and 3D print an adapter to power the camera from a single …read more
Continue reading External Battery Mod for Action Camera Does It Non-destructively
There is something to be said for brute force or trial-and-error approaches to problems, especially when finding a solution has an empirical element to it. [Tommy] perceived that to be the case when needing to design and 3D print servo horns that would fit factory servos as closely as possible, …read more
Continue reading Finding Perfect Part Fits with the Goldilocks Approach (and OpenSCAD)
[Nicholas Carlini] programmed a C implementation of two-player Tic Tac Toe, and he did it in a single call to printf(). The arguments for that single function call get mind-bendingly complex, so it may come as no surprise that it was written for The International Obfuscated C Code Contest …read more
Continue reading Tic-Tac-Toe Implemented in Single Call to printf()