An Open Hardware Rubber Ducky
https://hackaday.com/2019/07/24/an-open-hardware-rubber-ducky/

No it’s not an open source version of Bert’s favorite bathtime toy (though seriously, let us know if you see one), the PocketAdmin by [Radik Bechmetov] is intended to be an alternative to the well-known “USB Rubber Ducky” penetration testing tool from Hak5. It might look like a standard USB …read more (https://hackaday.com/2019/07/24/an-open-hardware-rubber-ducky/)

Shower Water Monitor Tracks The Dollars and Cents
https://hackaday.com/2019/07/24/shower-water-monitor-tracks-the-dollars-and-cents/

There’s nothing quite as relaxing as a long, hot shower. This has the tendency of making the bather absent minded as to the amount of water being used, which can lead to excessive bills. [LiamOSM] built a device to monitor this instead, and calculate the cost, to boot. 
The device …read more (https://hackaday.com/2019/07/24/shower-water-monitor-tracks-the-dollars-and-cents/)

Reaction Trainer Keeps You On Your Toes
https://hackaday.com/2019/07/24/reaction-trainer-keeps-you-on-your-toes/

In many sports, it’s important for competitors to be light on their feet, and able to react quickly to external stimuli. It all helps with getting balls in goals, and many athletes undergo reaction drills as part of their training regime. To help with this, [mblaz] set out to build …read more (https://hackaday.com/2019/07/24/reaction-trainer-keeps-you-on-your-toes/)

Tea Bot Solves Another First World Problem
https://hackaday.com/2019/07/24/tea-bot-solves-another-first-world-problem/

In the movie Wall-E, future humans live in floating chairs and have everything done for them. Today, we grumble if we have to go to physically find a light switch or a remote control. How far away can floating chairs with screens be? T2, the Tea Bot, gets us one …read more (https://hackaday.com/2019/07/24/tea-bot-solves-another-first-world-problem/)

XFM: A 32-Voice Polyphonic FM Synthesizer On An FPGA
https://hackaday.com/2019/07/24/xfm-a-32-voice-polyphonic-fm-synthesizer-on-an-fpga/

There’s something about Frequency Modulation (FM) synthesizer chips that appeals to a large audience. That’s one of the reasons behind [René Ceballos]’s XFM project, aiming to duplicate on an FPGA the sound of pure-FM synthesizer chips of the past such as the Yamaha DX series, OPL chip series …read more (https://hackaday.com/2019/07/24/xfm-a-32-voice-polyphonic-fm-synthesizer-on-an-fpga/)

MQTT Deep Dive
https://hackaday.com/2019/07/25/mqtt-deep-dive/

If you read Hackaday, it is a good bit you’ve heard of MQTT — Message Queueing Telemetry Transport. If you’ve not used MQTT before, you should check out Ably’s [Kayla Matthews’] post entitled  MQTT: A Conceptual Deep Dive paper. She does mention their MQTT protocol connector at the end, and …read more (https://hackaday.com/2019/07/25/mqtt-deep-dive/)

3D Printer Meets CNC Router to Make Wood Prints
https://hackaday.com/2019/07/25/3d-printer-meets-cnc-router-to-make-wood-prints/

We’ve seen plenty of plywood 3D printers before; after all, many early hobbyist machines were made from laser-cut plywood. But this plywood 3D-printer isn’t made from plywood – it prints plywood. Well, sort of.
Yes, we know – that’s not plywood the printer is using, but rather particleboard, the same …read more (https://hackaday.com/2019/07/25/3d-printer-meets-cnc-router-to-make-wood-prints/)

Airless Tire For Your Car: Michelin Says 2024, Here’s What They’re Up Against
https://hackaday.com/2019/07/25/airless-tire-for-your-car-michelin-says-2024-heres-what-theyre-up-against/

The average motorist has a lot to keep track of these days. Whether its how much fuel is left in the tank, how much charge is left in the battery, or whether or not the cop behind noticed them checking Twitter, there’s a lot on a driver’s mind. One thing …read more (https://hackaday.com/2019/07/25/airless-tire-for-your-car-michelin-says-2024-heres-what-theyre-up-against/)

Popstick Fan Car Is A Fun Bluetooth Build
https://hackaday.com/2019/07/25/popstick-fan-car-is-a-fun-bluetooth-build/

Archer fans already know, but for the rest of the world it bears saying – boats are fine, but fan boats are better. It’s much the same with land vehicles, too. [tinkeringtech] felt the same way, and built a Bluetooth-controlled fan car to scoot around the floor. (YouTube, embedded below.) …read more (https://hackaday.com/2019/07/25/popstick-fan-car-is-a-fun-bluetooth-build/)

One Week Left for Supercon Talk and Workshop Submissions
https://hackaday.com/2019/07/25/one-week-left-for-supercon-talk-and-workshop-submissions/

The Hackaday Superconference is the highest density of the coolest hackers anywhere. Other events may be bigger, but we’ll be so bold to say that none are better. If you love Hackaday, and we know you do, you should really come join us in November in Pasadena, CA.
Far and …read more (https://hackaday.com/2019/07/25/one-week-left-for-supercon-talk-and-workshop-submissions/)

CampZone 2019 Badge Is Begging To Become A Huge Billboard
https://hackaday.com/2019/07/25/campzone-2019-badge-is-begging-to-become-a-huge-billboard/

What has 256 full-colour LEDs, everyone’s favorite Lithium battery form factor, wireless connectivity, and hangs around your neck? It’s the CampZone 2019 badge that turns all attendees into a really fun billboard — but can the attendees hack themselves into one massive display?
One of Europe’s larger events for the …read more (https://hackaday.com/2019/07/25/campzone-2019-badge-is-begging-to-become-a-huge-billboard/)

Tiny Game System is an Experiment in Minimalism
https://hackaday.com/2019/07/25/tiny-game-system-is-an-experiment-in-minimalism/

Many people assumed the smartphone revolution would kill the dedicated handheld game system, and really, it’s not hard to see why. What’s the point of buying the latest Nintendo or Sony handheld when the phone you’re already carrying around with you is capable of high-definition 3D graphics and online connectivity? …read more (https://hackaday.com/2019/07/25/tiny-game-system-is-an-experiment-in-minimalism/)

College Project Nets 360 Degree POV Display
https://hackaday.com/2019/07/25/college-project-nets-360-degree-pov-display/

Senior college projects are the culmination of years of theoretical learning finally put into practice. For many students they are their first experience of doing some proper, real world engineering. [Melangeaddict] chose to take on a persistence of vision display for his final project, and learned plenty along the way. …read more (https://hackaday.com/2019/07/25/college-project-nets-360-degree-pov-display/)

Neopixels Recreate Pinball Color Wheel That Never Was
https://hackaday.com/2019/07/25/neopixels-recreate-pinball-color-wheel-that-never-was/

With what pinball aficionados pay for the machines they so lovingly restore, it’s hard to imagine that these devices were once built to a price point. They had to make money, and whatever it took to attract attention and separate the customer from their hard-earned coins was usually included in …read more (https://hackaday.com/2019/07/25/neopixels-recreate-pinball-color-wheel-that-never-was/)

Deducing Stepper Motor Wiring
https://hackaday.com/2019/07/25/deducing-stepper-motor-wiring/

There are a lot of fun projects you can do with stepper motors salvaged from old printers or disk drives. However, it isn’t always clear how to connect to some strange motor with no markings or schematics. [Corvetteguy50] has a video showing his trick for working out the connections easily, …read more (https://hackaday.com/2019/07/25/deducing-stepper-motor-wiring/)

PC And Console Gaming United Courtesy Of Origin
https://hackaday.com/2019/07/25/pc-and-console-gaming-united-courtesy-of-origin/

When folk at Origin PCs realized that their company was about to celebrate its 10th anniversary of making custom (gaming) PCs, they knew that they had to do something special. Since one thing they did when the company launched in 2009 was to integrate an XBox 360 into a gaming …read more (https://hackaday.com/2019/07/25/pc-and-console-gaming-united-courtesy-of-origin/)

HDMI From Your Arduino
https://hackaday.com/2019/07/26/hdmi-from-your-arduino/

Creating a video signal from a computer, a job that once required significant extra hardware, is now a done deal with a typical modern microcontroller. We’ve shown you more NTSC, PAL, and VGA projects than you can shake a stick at over the years. Creating an HDMI video signal however …read more (https://hackaday.com/2019/07/26/hdmi-from-your-arduino/)

Installing Android On Your Nintendo Switch, Because Why Not?
https://hackaday.com/2019/07/26/installing-android-on-your-nintendo-switch-because-why-not/

In a continuing trend of ‘but does it run Android?’, enterprising folk over at the XDA-Developers forum have found a way to get LineageOS (the successor to CyanogenMod) installed and running on the Nintendo Switch. Promising to release the necessary files to replicate this effort has obviously made other people …read more (https://hackaday.com/2019/07/26/installing-android-on-your-nintendo-switch-because-why-not/)

This Week in Security: Selfblow, Encryption Backdoors, Killer Apps, and the VLC Apocalypse that Wasn’t
https://hackaday.com/2019/07/26/this-week-in-security-selfblow-encryption-backdoors-killer-apps-and-the-vlc-apocalypse-that-wasnt/

Selfblow (Don’t google that at work, by the way) is a clever exploit by [Balázs Triszka] that effects every Nvidia Tegra device using the nvtboot bootloader — just about all of them except the Nintendo Switch. It’s CVE 2019-5680, and rated at an 8.2 according to Nvidia, but that high …read more (https://hackaday.com/2019/07/26/this-week-in-security-selfblow-encryption-backdoors-killer-apps-and-the-vlc-apocalypse-that-wasnt/)

Cheap Speakers Sound Great In A Proper Enclosure
https://hackaday.com/2019/07/26/cheap-speakers-sound-great-in-a-proper-enclosure/

It’s possible to pick up a low-cost set of speakers for a few dollars, but by and large, you don’t get a lot of quality for your money. Expect a small pair of drivers, with tinny sound and ugly noises from the enclosure’s cheap materials. [JSK-koubou] has shown us, however, …read more (https://hackaday.com/2019/07/26/cheap-speakers-sound-great-in-a-proper-enclosure/)

Hackaday Podcast 028: Brain Skepticism Turned Up to 11, Web Browsing in ’69, Verilog For 7400 Logic, 3D Printing in Particle Board
https://hackaday.com/2019/07/26/hackaday-podcast-028-brain-skepticism-turned-up-to-11-web-browsing-in-69-verilog-for-7400-logic-3d-printing-in-particle-board/

Hackaday Editors Mike Szczys and Elliot Williams cover the most interesting hacks over the past week. So much talk of putting computers in touch with our brains has us skeptical on both tech and timeline. We celebrated the 40th Anniversary of the Walkman, but the headphones are the real star. …read more (https://hackaday.com/2019/07/26/hackaday-podcast-028-brain-skepticism-turned-up-to-11-web-browsing-in-69-verilog-for-7400-logic-3d-printing-in-particle-board/)