# Bubblegum Tap Shoes

- Show: [The Amp Hour](https://hardwarepodcasts.com/podcast/the-amp-hour)
- Published: 2022-01-23
- Length: 1h 04m
- Episode: 574
- Page: https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes
- Listen: https://theamphour.com/574-bubblegum-tap-shoes/

## Summary

Dave Jones of EEVblog and Chris Gammell of Contextual Electronics discuss the technical nuances of 1N400x diodes, specifically why manufacturers produce multiple voltage ratings for the same package, and Gammell’s transition from Fusion 360 to FreeCAD. They also cover the internal operation of the LM317 linear regulator, the ongoing global semiconductor shortage affecting parts like the RP2040, and the importance of lab organization and measurement traceability.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=0) Introduction: Dave Jones and Chris Gammell
- [5:14](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=314) 1N400x Diode Voltage Ratings and Binning
- [22:52](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=1372) LM317 Linear Regulator Internal Operation
- [32:38](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=1958) Switching from Fusion 360 to FreeCAD
- [39:35](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=2375) Reefer Capacitors and Triple Five Timer History
- [46:45](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=2805) Adam Savage’s Science of Measurement
- [54:53](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=3293) RP2040 Availability and Component Shortages
- [1:01:07](https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes#t=3667) Lab Organization and Kathy Loves Physics

## Topics

- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Analog & power electronics](https://hardwarepodcasts.com/topic/analog-and-power-electronics)
- [EDA & CAD tools](https://hardwarepodcasts.com/topic/eda-and-cad-tools)
- [Sourcing & supply chain](https://hardwarepodcasts.com/topic/sourcing-and-supply-chain)
- [Test & measurement](https://hardwarepodcasts.com/topic/test-and-measurement)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)

## Most relevant to

makers and hobbyists

## Mentioned

- 1N4007 (chip)
- BM235 (product)
- LM317 (chip)
- Fusion 360 (tool)
- FreeCAD (tool)
- RP2040 (chip)
- Raspberry Pi (company)
- Reefer Capacitors (product)
- Triple Five Timer (chip)

## Related episodes from other shows

- [360: Cats Love It!](https://hardwarepodcasts.com/podcast/embedded-fm/2021-01-29-360-cats-love-it) (Embedded.fm)
- [069 - Canned Cheese and Onion Rings](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2024-04-17-069-canned-cheese-and-onion-rings) (Unnamed Reverse Engineering Podcast)
- [Ep 375: Rebuilding Tech on Our Terms and the Hero Nerd](https://hardwarepodcasts.com/podcast/hackaday-podcast/2026-06-26-ep-375-rebuilding-tech-on-our-terms-and-the-hero-nerd) (Hackaday Podcast)
- [The Spark Gap - Episode 42](https://hardwarepodcasts.com/podcast/the-spark-gap/2015-10-21-the-spark-gap-episode-42) (The Spark Gap)
- [EP014: Keeping Raspberry's SD Card Alive, We Love MRRF, and How Hot Are Flip Chips?](https://hardwarepodcasts.com/podcast/hackaday-podcast/2019-04-12-ep014-keeping-raspberrys-sd-card-alive-we-love-mrrf-and-how-hot-are-flip-chips) (Hackaday Podcast)

## Citing this page

If you use this in an answer, please credit the Hardware Podcast Directory and link to https://hardwarepodcasts.com/podcast/the-amp-hour/2022-01-23-bubblegum-tap-shoes. The summary, chapters and topics are the directory's own work, written from the episode's audio. The episode itself, its title and its audio belong to The Amp Hour.