Peek Into This Synth’s Great Design (And Abandoned Features)

[Tommy]’s POLY555 is an analog, 20-note polyphonic synthesizer that makes heavy use of 3D printing and shows off some clever design. The POLY555, as well as [Tommy]’s earlier synth designs, are based around the 555 timer. But one 555 is …read more

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Lost a Lightweight Quadcopter? Here Are The Best Ways To Find It

Lost aircraft are harder to find when they are physically small to begin with. Not only are they harder to see, but the smaller units lack features like GPS tracking; it’s not normally possible to add it to a tiny …read more

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buttonpusher Automates Animal Crossing Tasks

Press button, wait, press button again, repeat. There must be a better way! If that kind of interaction drives you nuts, you’ll probably appreciate [Tommy]’s buttonpusher, which has only one job: automate away some of the more boring parts of …read more

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Smart Lid Spies On Sourdough Starter, Sends Data Wirelessly

[Justin Lam] created a wonderfully-detailed writeup of his Smart Sourdough Lid project, which was created out of a desire to get better data on the progress and health of his sourdough starters, and to do so more efficiently. The result …read more

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3D-Printed Macro Pad Ditches the PCB With Slick Wiring Guides

Reddit user [duzitbetter] showed off their design for a 3D-printed programmable macro keyboard that offers a different take on what can be thought of as a sort of 3D-printed PCB. The design is called the Bloko 9 and uses the …read more

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Wireless, Low Power E-Ink Weather Gadget

(1) Weather alert indicator, (2) Current temperature and “feels like” temperature, (3) Relative humidity and wind, (4) 24-hour temperature graph, (5) 24-hour precipitation probability graph

Not that long ago, making a low-power and wireless weather display complete with an e-ink …read more

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Useful Build Tips For Making LED Panel Frames

[NotLikeALeafOnTheWind] has created many LED-based display projects, and shares his method for making attractive LED panel frames and mounts. At first glance it may look as though slapping a rectangle of aluminum extrusion around a display is all it takes, …read more

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Python Settles Bet About Best Strategy in Children’s Board Game

Simulating a tabletop game can be done for several reasons: to play the game digitally, to create computer opponent(s), or to prove someone wrong. In [Everett]’s case, he used Python to prove which adult was right about basic strategy in …read more

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Vintage Calculator Design Shows Just How Much We Take for Granted Today

[Amen]’s Rockwell 920 calculator from the 70s was a very impressive piece of hardware for its time. It sported a 16-digit display, a printer, and it could run programs. It even had a magnetic card reader/writer that could be used …read more

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Software Challenge’s Solution Shows Reverse Engineering in Action

[0xricksanchez] participated in a software reverse-engineering challenge and recently wrote up the solution, and in so doing also documented the process used to discover it. The challenge was called Devil’s Swapper, and consisted of a small binary blob that …read more

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