Hackaday Podcast 128: 3D-Printing Injection Molds, Squiggly Audio Tape, Curvy Mirrors, and Space Cadets



Hackaday editors Elliot Williams and Mike Szczys bubble sort the best hardware hacks so you don’t miss ’em. This week we’re smitten by the perfection of a telephone tape loop message announcer. We enjoyed seeing Blender’s ray tracing to design mirrors, and a webcam and computer monitor to stand in for triple-projector-based fractal fun. There’s a bit of injection molding, some Nintendo Switch disassembling, and the Internet on a calculator. We close the show with a pair of Space stories, including the happy news this week that Wally Funk finally made it there!

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!
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Episode 128 Show Notes:

What’s that Sound?

That sound was Legend of Zelda: Ocarina of Time
[Big Mike Cupka] was randomly drawn from more than 30 correct responses and wins the shirt!
This week’s random numbers generated by a reverse-biased 2N3904 .  (Scroll all the way down for the circuit. Mine’s capacitively decoupled at the output.)

New This Week:

The Fix Is In: Hubble’s Troubles Appear Over For Now
Samsung Shuttering Original SmartThings Hubs

Interesting Hacks of the Week:

Injection Molds From Your 3D Printer

The Hidden Sounds Of The Past

Tape Loop Announcer Featured on Techmoan Fixed And Wired Up! – YouTube
Roland RE-201 – Wikipedia


Finding Fractals In The 1930’s
Fixing Joy-Con Drift With Recycle Bin Parts
Tales From The Global Chip Shortage: Smoothieboard

Making Custom Curved Mirrors At Home

Optical Sensor Keeps Eye On Wandering Saw Blade



Quick Hacks:

Elliot’s Picks

Extracting The WiFi Firmware And Putting Back A Keylogger
The Internet – On A Casio Calculator!
MIDI Mouse Makes Marvelous Music


Mike’s Picks:

An OLED Photo Frame Powered By The ATtiny85
Ball Balancing Wheel Puts A Spin On Inverted Pendulums
Faulty Electrolytic Caps Don’t Always Look Bad



Can’t-Miss Articles:

A Look Back On A Decade Of Kerbal Space Program

This Group Of Women Tried To Break Into Astronaut Program In 1960s; One Just Made It

The Flight Of The Seagull: Valentina Tereshkova, Cosmonaut



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