# Ep 175: Moonrocks and Cockroach Chyme, A Raspberry Pi iPad, and a Retro-Respectful Tape Deck

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2022-07-01
- Length: 49m
- Episode: 175
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful
- Listen: https://hackaday.libsyn.com/ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful-tape-deck

## Summary

Editors Elliot Williams and Kristina Panos review the week's hacks, highlighting Jason Knight's open-source machine for recycling plastic into skateboard decks and the 'Trash Printer' for low-grade plastics. They discuss a retro-respectful tape deck built with an ESP32 that mimics injection molding details, and Evan's ambitious project to upgrade an original iPad with a Raspberry Pi Compute Module 4. The episode also covers a binary toggle-switch keyboard, a pocket PDA built on an Arduino Nano, and a deep dive into the history of smartphone lens design.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=0) Contest News and Recycling Machines
- [7:41](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=461) Moon Rocks, Cockroach Chyme, and Stolen Moon Rocks
- [15:20](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=920) Retro-Respectful ESP32 Tape Deck
- [19:15](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=1155) Extruded Resin FDM Printing with Lasers
- [25:12](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=1512) Binary Toggle Switch Keyboard
- [26:57](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=1617) Raspberry Pi CM4 iPad Upgrade
- [31:42](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=1902) Pocket PDA and Quick Hacks
- [37:51](https://hardwarepodcasts.com/podcast/hackaday-podcast/2022-07-01-ep-175-moonrocks-and-cockroach-chyme-a-raspberry-pi-ipad-and-a-retro-respectful#t=2271) History of Smartphone Lenses and Teddy Ruxman

## Topics

- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Industrial & consumer product design](https://hardwarepodcasts.com/topic/industrial-design)
- [AI & machine learning](https://hardwarepodcasts.com/topic/ai-and-machine-learning)

## Most relevant to

makers and hobbyists

## Mentioned

- Jason Knight (other)
- Precious Plastic (other)
- Trash Printer (product)
- ESP32 (chip)
- Raspberry Pi Compute Module 4 (chip)
- Arduino Nano (chip)
- RTL SDR (product)
- Teddy Ruxpin (product)
- Casey Baraphone (product)
- Hackaday Prize (other)

## Related episodes from other shows

- [MNT Pocket Reform, Apple E-Ink display, Pi Pico Midi Step Sequencer, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-09-28-mnt-pocket-reform-apple-e-ink-display-pi-pico-midi-step-sequencer-and-more) (The Electromaker Show)
- [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)
- [Raspberry Pi 500, Robot Roadies, Huge 3d Printers and Car Hacking!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2023-11-26-raspberry-pi-500-robot-roadies-huge-3d-printers-and-car-hacking) (The Electromaker Show)
- [ESP32 iPod, Super Fast E-Ink, Generative AI on the Edge, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2023-10-25-esp32-ipod-super-fast-e-ink-generative-ai-on-the-edge-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)

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