Hackaday Podcast Ep 314: It's Pi, but Also PCBs in Living Color and Ultrasonic Everything
Mar 28, 2025
The hosts dive into the quirky world of ultrasonic technology, discussing its uses from detecting mosquitoes to cutting cheese. They explore the evolution of PCBs, showcasing vibrant, full-color designs and innovative applications. A journey into automation reveals new techniques for 3D printer calibration using affordable endoscopes. Nostalgia meets tech as they reminisce about classic computers and inventive projects like creating dynamic lamps. Plus, the intrigue of plasma in a bottle gets a unique twist with kombucha and silicone!
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Angle Grinder Sound Recognition
- Dan Maloney and Elliot Williams discuss identifying the sound of an angle grinder.
- Jenny, who grew up in a blacksmith shop, correctly recognized it instantly, illustrating expertise's value.
Innovative Ultrasonic Mosquito Detection
- Alex Toussaint developed a high-resolution ultrasonic microphone array using MEMS microphones for precise 3D ultrasonic imaging.
- It can detect and differentiate mosquitoes from other insects using Doppler frequency shifts.
Automating Fiber Optic Lamp Fabrication
- Dan Maloney and Elliot Williams explore a lamp with embedded fiber optics made via automated drilling and glue dispensing.
- Dan cites his lab automation experience that high volume tasks justify automation effort.