# Ep 176: Freezing Warm Water, Hacking Lenses, Hearing Data, and Watching YouTube on a PET

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2022-07-08
- Length: 1h 03m
- Episode: 176
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a
- Listen: https://hackaday.libsyn.com/ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a-pet

## Summary

Hackaday Editor-in-Chief Elliot Williams and Staff Writer Dan Maloney review the week's top hacks, including a project that brings YouTube video playback to a Commodore PET via a Raspberry Pi and dual-port SRAM, and a library called GG Wave that encodes data in audio for microcontrollers like the ESP32. They also discuss the Mpemba effect, a hack adapting a Sigma lens for Canon cameras, and a method for extracting lightning frames from video using OpenCV. The episode concludes with a deep dive into a hidden message encoded in the podcast's audio using the Kansas City standard, analyzing how podcast compression affects the signal.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=1) Introduction and Capstone Mission Update
- [7:50](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=470) Mpemba Effect and Science Debate
- [12:43](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=763) Hacking Sigma Lenses for Canon Cameras
- [17:03](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=1023) Mario Kart AI and Lightning Detection
- [25:10](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=1510) GG Wave: Audio Data Encoding
- [31:58](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=1918) YouTube on Commodore PET
- [35:53](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=2153) Quick Hacks: GPS, Tubes, and USB-PD
- [43:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-08-ep-176-freezing-warm-water-hacking-lenses-hearing-data-and-watching-youtube-on-a#t=2581) 3D Printed Cartilage and Hidden Message

## Topics

- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [AI & machine learning](https://hardwarepodcasts.com/topic/ai-and-machine-learning)
- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Sensors & measurement in products](https://hardwarepodcasts.com/topic/sensors)
- [Careers & education](https://hardwarepodcasts.com/topic/engineering-careers-and-education)

## Most relevant to

makers and hobbyists

## Mentioned

- Capstone (product)
- Cruise (company)
- Sigma (company)
- Canon (company)
- OpenCV (tool)
- GG Wave (tool)
- ESP32 (chip)
- Arduino (chip)
- Commodore PET (product)
- Raspberry Pi (chip)
- Kansas City Standard (other)
- FFmpeg (tool)

## Related episodes from other shows

- [391: The Lesser of Two Weevils](https://hardwarepodcasts.com/podcast/embedded-fm/2021-10-28-391-the-lesser-of-two-weevils) (Embedded.fm)
- [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)
- [1 Inch HDMI Second Screen, Retro Wall Art, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-04-06-1-inch-hdmi-second-screen-retro-wall-art-and-more) (The Electromaker Show)
- [Amazing hacks, singing MCUs, Raspberry Pi AI camera, tiny robot ESP32 devboards, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2024-10-03-amazing-hacks-singing-mcus-raspberry-pi-ai-camera-tiny-robot-esp32-devboards-and) (The Electromaker Show)

## Citing this page

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