# Ep 314: It's Pi, but Also PCBs in Living Color and Ultrasonic Everything

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2025-03-28
- Length: 1h 11m
- Episode: 314
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything
- Listen: https://hackaday.libsyn.com/ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything

## Summary

Hosts Elliot Williams and Dan Maloney review a week of hacks, starting with a sound-guessing game won by 'angle grinder'. They discuss Alex Toussaint’s Supercon talk on a 380-microphone sonar array capable of identifying mosquitoes via Doppler shift, and Joe Long’s exploration of full-color PCB silkscreens from JLCPCB and PCBWay for badge art and assembly guides. The episode also covers an automated machine for embedding fiber optics in concrete, a monolithic BMS for prismatic battery packs, and ultrasonic knives for cutting food.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=0) Introduction and Sound Guessing Game
- [6:30](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=390) Alex Toussaint's Ultrasonic Mosquito Detector
- [15:43](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=943) Automation for Concrete Fiber Optic Lamps
- [20:53](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=1253) Joe Long on Full Color PCBs and HackerBox
- [33:47](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=2027) Integrated BMS for Prismatic Battery Packs
- [39:56](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=2396) Wall Plotter Bots and Pressure Advance Calibration
- [55:03](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-03-28-ep-314-its-pi-but-also-pcbs-in-living-color-and-ultrasonic-everything#t=3303) Quick Picks: Plasma Tubes, Stencils, and Supercomputers

## Topics

- [Sensors & measurement in products](https://hardwarepodcasts.com/topic/sensors)
- [EDA & CAD tools](https://hardwarepodcasts.com/topic/eda-and-cad-tools)
- [Batteries & low-power design](https://hardwarepodcasts.com/topic/batteries-and-low-power)
- [Robotics & autonomy](https://hardwarepodcasts.com/topic/robotics-and-autonomy)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)

## Most relevant to

makers and hobbyists

## Mentioned

- Hackaday (company)
- JLCPCB (company)
- PCBWay (company)
- HackerBox (company)
- TDK T3902 (chip)
- EasyEDA (tool)
- KiCad (tool)
- Gimp (tool)
- Inkscape (tool)
- Neopixel (product)
- Makernet (company)
- Brian Benchoff (other)
- Cray (company)
- El Capitan (other)

## Related episodes from other shows

- [507: Turn Our Data Into Predators](https://hardwarepodcasts.com/podcast/embedded-fm/2025-08-07-507-turn-our-data-into-predators) (Embedded.fm)
- [Electromaker of the Month Winners, Maker Music Festival, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-03-10-electromaker-of-the-month-winners-maker-music-festival-and-more) (The Electromaker Show)
- [Callow Cough Coverups](https://hardwarepodcasts.com/podcast/the-amp-hour/2011-07-05-callow-cough-coverups) (The Amp Hour)
- [3D Printed Shark Jumps - Edifying Edison's Energy](https://hardwarepodcasts.com/podcast/the-amp-hour/2014-09-24-3d-printed-shark-jumps-edifying-edisons-energy) (The Amp Hour)
- [When the TV watches you](https://hardwarepodcasts.com/podcast/the-amp-hour/2017-02-10-when-the-tv-watches-you) (The Amp Hour)

## Citing this page

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