Category Archives: gears

Harmonic Analyzer Does It With Cranks And Gears

Before graphic calculators and microcomputers, plotting functions were generally achieved by hand. However, there were mechanical graphing tools, too. With the help of a laser cutter, it’s even possible to make your own!

The build in question is nicknamed the Harmonic Analyzer. It can be used to draw functions created …read more

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Posted in gears, harmonic, laser cutter, mechanical computer, misc hacks, wood | Leave a comment

Bend some Bars with a Flywheel

The ability to look at a pile of trash, and see the for treasure is a skill we hold in high regard around here. [Meanwhile in the Garage] apparently has this skill in spades and built himself a metal bar bending machine using an old flywheel and starter pinion gear. …read more

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Posted in bar bending, gears, lathe, metal working, milling, rollers, tool hacks, welding | Leave a comment

Steampunk Radio Looks The Business

Radios are, by and large, not powered by steam. One could make the argument that much of our municipal electricity supply does come via steam turbines, but that might be drawing a long bow. Regardless, steampunk remains a popular and attractive aesthetic, and it’s the one that [Christine] selected for …read more

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Posted in gears, radio, radio hacks, steampunk | Leave a comment

Home Made Gears Save This Shredder

It’s very likely that a majority of readers will have had a gear fail in a piece of equipment, causing it to be unrepairable. This is a problem particularly with plastic gears, which shed teeth faster than a child who has discovered the financial returns of the Tooth Fairy.

[BcastLar] …read more

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Posted in freecad, gears, news, plastic gears, repair hacks | Leave a comment

3D-Printed Mobius Strip of Gears

Exploring the mathematics behind everyone’s favourite unorientable single-sided surface can be quite the mind-bending exercise, so it’s nice that it’s so easy to make a Mobius strip out of paper and a single piece of tape. That demonstration was far from enough for [elmins]. who printed this Mobius strip of …read more

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Posted in 3d Printer hacks, gears, mobius strip | Leave a comment

A Word Clock, The Hard Way

We’ve all seen word clocks, and they’re great, but there are only so many ways to show the time in words. This word clock with 114 servos is the hard way to do it.

We’re not sure what [Moritz v. Sivers] was aiming for with this projection clock, but he …read more

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Posted in clock hacks, DS3231 RTC, gears, led, nano, neopixel, PCA9685, projection, rack and pinion, servo, word clock, ws2812 | Leave a comment

Learning Through Play Hack Chat with Greg Zumwalt

Join us Wednesday at noon Pacific time for the Learning Through Play Hack Chat!

You may think you’ve never heard of Greg Zumwalt, but if you’ve spent any time on Instructables or Thingiverse, chances are pretty good you’ve seen some of his work. After a long career that ranged from …read more

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Posted in automata, automaton, cams, gears, Greg Zumwalt, Hack Chat, Hackaday Columns, mechanism, pulleys, toy | Leave a comment

7-Segment Display is 3D Printed and Hand Cranked

[Peter Lehnér] has designed a brilliant 7-segment flip-segment display that doesn’t really flip. In fact, it doesn’t use electromagnets at all. This one is 3D printed and hand cranked. It’s a clever use of a cam system to set the segments for each digit (0-9) makes it a perfect entry in the Hackaday 3D Printed Gears, Pulleys, and Cams contest.

We find the nomenclature of these displays to be a bit confusing so let’s do a quick rundown. You may be most familiar with flip-dot displays, basically a dot-matrix grid of physical pixels that are black on one side and …read more

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Posted in 3d Printer hacks, 7-segment display, cams, contests, gears, mechanical display, seven segment display | Leave a comment

Hackaday Podcast Ep3 – Igloos, Lidar, And The Blinking LED Of RF Hacking

It’s cold outside! So grab a copy of the Hackaday Podcast, and catch up on what you missed this week.

Highlights include a dip into audio processing with sox and FFMPEG, scripting for Gmail, weaving your own carbon fiber tubes, staring into the sharpest color CRT ever, and unlocking the secrets of cheap 433 MHz devices. Plus Elliot talks about his follies in building an igloo while Mike marvels at what’s coming out of passive RFID sensor research.

And what’s that strange noise at the end of the podcast?

Direct Download (59.2 MB MP3)

Places to follow Hackaday podcasts:

  • Google

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Posted in 433 mhz, dot matrix printer, ffmpeg, gears, Hackaday Columns, igloo, lidar, podcast, Podcasts, rfid, rfid sensors, sox, Toki Pona | Leave a comment

New Contest: 3D Printed Gears, Pulleys, and Cams

One of the killer apps of 3D printers is the ability to make custom gears, transmissions, and mechanisms. But there’s a learning curve. If you haven’t 3D printed your own gearbox or automaton, here’s a great reason to take the plunge. This morning Hackaday launched the 3D Printed Gears, Pulleys, and Cams contest, a challenge to make stuff move using 3D-printed mechanisms.

Adding movement to a project brings it to life. Often times we see projects where moving parts are connected directly to a server or other motor, but you can do a lot more interesting things by adding some …read more

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Posted in 3d printed, 3d Printer hacks, automata, cams, classic hacks, contests, gear box, gears, Hackaday Columns, Mechanisms, Original Art, pulleys | Leave a comment