# Ep 342: Poopless Prints, Radio in Your Fillings, and One Hyperspectral Pixel at a Time

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2025-10-17
- Length: 1h 12m
- Episode: 342
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t
- Listen: https://hackaday.com/2025/10/17/hackaday-podcast-episode-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-time/

## Summary

Hosts Elliot Williams and Dan Maloney review the week's Hackaday news, starting with the Supercon keynote panel featuring Star Trek designers Michael and Denise Okuda, Rick Sternbach, and others. They discuss Jan Gritz's 'poopless' 4-color co-extruding 3D printer hotend, which uses laminar flow to print multi-colored objects without purging, and infrauctuity's hyperspectral camera that rasterizes a USB spectrometer across a 400x400 frame to capture spectral data. The hosts also cover Ringway's debunking of the 'radio in fillings' myth, Soy Boy Soft's air-powered squishy robot using pneumatic logic gates, and Project 326's use of Americium-241 for x-ray imaging of electronics.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=1) Introduction: Supercon Keynote and Star Trek Designers
- [4:21](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=261) What's That Sound: Lock Picking Audio
- [7:03](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=423) Jan Gritz's 4-Color Co-Extruding 3D Printer Hotend
- [14:06](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=846) Infrauctuity's Hyperspectral Camera and Spectrometer
- [22:50](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=1370) Texas Instruments Analog Design Resources
- [26:21](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=1581) Ringway's Analysis of Radio Signals in Dental Fillings
- [33:44](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=2024) Soy Boy Soft's Air-Powered Squishy Robot
- [45:27](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=2727) Project 326's Americium-241 X-Ray Imaging
- [51:39](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=3099) Quick Hacks: Algol 68, ADCs, and Floppy RFID
- [54:04](https://hardwarepodcasts.com/podcast/hackaday-podcast/2025-10-17-ep-342-poopless-prints-radio-in-your-fillings-and-one-hyperspectral-pixel-at-a-t#t=3244) Rubik's Wow Cube Review and Meshtastic Network Report

## Topics

- [Mechanical engineering](https://hardwarepodcasts.com/topic/mechanical-engineering)
- [Sensors & measurement in products](https://hardwarepodcasts.com/topic/sensors)
- [Wireless & RF](https://hardwarepodcasts.com/topic/wireless-and-rf)
- [Analog & power electronics](https://hardwarepodcasts.com/topic/analog-and-power-electronics)
- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Industrial & consumer product design](https://hardwarepodcasts.com/topic/industrial-design)

## Most relevant to

makers and hobbyists

## Mentioned

- Supercon (other)
- Star Trek (other)
- Michael Okuda (other)
- Denise Okuda (other)
- Rick Sternbach (other)
- Jan Gritz (other)
- infrauctuity (other)
- Texas Instruments (company)
- Analog Devices (company)
- Ringway (other)
- Soy Boy Soft (other)
- Project 326 (other)
- Meshtastic (other)
- Lucille Ball (other)
- Rubik's Wow Cube (product)

## Related episodes from other shows

- [58. Metadata Embedded Hardware & Flexible OLED Screens](https://hardwarepodcasts.com/podcast/the-next-byte-podcast/2022-02-22-58-metadata-embedded-hardware-flexible-oled-screens) (The Next Byte Podcast)
- [Incredible LoRa and 3d Printing Breakthroughs, Best SBCs for AI, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2024-04-04-incredible-lora-and-3d-printing-breakthroughs-best-sbcs-for-ai-and-more) (The Electromaker Show)
- [Space Difficulties and Lost Heroes - Wanzing Workshop Whemmle](https://hardwarepodcasts.com/podcast/the-amp-hour/2014-11-06-space-difficulties-and-lost-heroes-wanzing-workshop-whemmle) (The Amp Hour)
- [73: That's a Waste of Bits](https://hardwarepodcasts.com/podcast/embedded-fm/2014-10-22-73-thats-a-waste-of-bits) (Embedded.fm)
- [New Arduino Board, No More Pi Shortages, Absurdly Tiny Resin Printers, and More!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2023-01-12-new-arduino-board-no-more-pi-shortages-absurdly-tiny-resin-printers-and-more) (The Electromaker Show)

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