# Ep 238: Vibrating Bowl Feeders, Open Sourcery, Learning to Love Layer Lines

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2023-09-29
- Length: 1h 01m
- Episode: 238
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines
- Listen: https://hackaday.libsyn.com/ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines

## Summary

Hosts Elliot Williams and Tom Nardi discuss a DIY vibrating bowl feeder built by France, the open-source licensing debate surrounding Precious Plastics' exclusive design releases, and a reverse oscilloscope synthesizer by Mitzela. They also analyze the absurdity of Apple's new MacBook lid angle sensors, the philosophy of cooperative scheduling in embedded systems, and the evolving aesthetic acceptance of 3D print layer lines. The episode concludes with quick hacks on nickel-hydrogen batteries, a Teddy Ruxpin animatronic, and a discussion of David Macaulay's architecture books and the history of microwave oven turntables.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=1) Introduction: OSIRIS-REx Asteroid Sample Return
- [8:02](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=482) DIY Vibrating Bowl Feeder by France
- [13:34](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=814) Precious Plastics and Open Source Licensing Debate
- [20:10](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=1210) Mitzela's Arbitrary Waveform Generator Synthesizer
- [24:54](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=1494) Apple MacBook Lid Sensor Calibration Issues
- [30:44](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=1844) Cooperative Scheduling and Fibers in Embedded Systems
- [36:51](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=2211) Smoothing 3D Prints and Embracing Layer Lines
- [44:52](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=2692) Quick Hacks: Batteries, Teddy Ruxpin, and Passive Components
- [50:36](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-09-29-ep-238-vibrating-bowl-feeders-open-sourcery-learning-to-love-layer-lines#t=3036) David Macaulay's Architecture Books and Microwave History

## Topics

- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Open-source hardware](https://hardwarepodcasts.com/topic/open-source-hardware)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Debugging & failure analysis](https://hardwarepodcasts.com/topic/debugging-and-failure-analysis)
- [Maker community & events](https://hardwarepodcasts.com/topic/maker-community)

## Most relevant to

makers and hobbyists

## Mentioned

- OSIRIS-REx (other)
- Bennu (other)
- France (other)
- Precious Plastics (company)
- Mitzela (other)
- Apple (company)
- Teddy Ruxpin (product)
- David Macaulay (other)
- Al Williams (other)

## Related episodes from other shows

- [523: Bad Experience With Donuts](https://hardwarepodcasts.com/podcast/embedded-fm/2026-04-02-523-bad-experience-with-donuts) (Embedded.fm)
- [Barilla Embraces Open Source, Tinycircuits Kickstarter, Pi Pico Iron Man, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-10-28-barilla-embraces-open-source-tinycircuits-kickstarter-pi-pico-iron-man-and-more) (The Electromaker Show)
- [Ep. 16 - Open Hardware with Thea Flowers](https://hardwarepodcasts.com/podcast/open-hardware-manufacturing-podcast/2024-03-14-ep-16-open-hardware-with-thea-flowers) (Open Hardware Manufacturing Podcast)
- [Open Circuits with Eric Schlaepfer and Windell Oskay](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-11-14-open-circuits-with-eric-schlaepfer-and-windell-oskay) (The Amp Hour)
- [Two and a Half Orders of Magnitude](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-07-12-two-and-a-half-orders-of-magnitude) (The Amp Hour)

## Citing this page

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