# Ep102: Raspberry Pi Microcontroller, Microphone Killswitch, and a 45-Degree 3D-Printer

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2021-01-22
- Length: 53m
- Episode: 102
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin
- Listen: https://hackaday.libsyn.com/ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-printer

## Summary

Hackaday editors Elliot Williams and Mike Szczys review the Raspberry Pi Pico microcontroller, highlighting its RP2040 chip, dual Cortex-M0+ cores, and unique Programmable IO (PIO) hardware for precise bit-banging. They also discuss an Amazon Echo Flex teardown revealing a hardware-based microphone killswitch, and a 45-degree 3D printer that eliminates the need for support structures by angling the nozzle. The episode covers various community hacks, including a wall-sized pen plotter, an open-source RC protocol, and a Dubai LED bulb design focused on longevity.

## Chapters

- [0:02](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=2) Introduction and Remoticon Workshops
- [5:59](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=359) 45-Degree 3D Printer and Support-Free Printing
- [10:37](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=637) Dubai LED Bulb and Under-Driving LEDs
- [15:53](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=953) Wall-Sized Pen Plotter and Core XY Build
- [20:32](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=1232) Amazon Echo Flex Microphone Killswitch Teardown
- [25:53](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=1553) Express LRS Open Source RC Protocol
- [28:46](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=1726) 3D Printer Enclosure and Quick Hacks
- [37:18](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=2238) Raspberry Pi Pico and PIO Deep Dive
- [47:33](https://hardwarepodcasts.com/podcast/hackaday-podcast/2021-01-22-ep102-raspberry-pi-microcontroller-microphone-killswitch-and-a-45-degree-3d-prin#t=2853) TV Detector Vans and Show Close

## Topics

- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Fabrication & craft](https://hardwarepodcasts.com/topic/fabrication-and-craft)
- [Open-source hardware](https://hardwarepodcasts.com/topic/open-source-hardware)
- [Security & privacy](https://hardwarepodcasts.com/topic/security-and-privacy)

## Most relevant to

makers and hobbyists

## Mentioned

- Raspberry Pi (company)
- RP2040 (chip)
- Amazon (company)
- Echo Flex (product)
- Philips (company)
- Big Clive (other)
- Express LRS (product)
- STM32 (chip)
- LoRa (other)
- Ultimaker (product)
- HEPA (other)
- SAMD21 (chip)
- bladeRF (product)
- Apple II (product)
- Farkel (product)
- 555 timer (chip)
- ESP32 (chip)
- BeagleBone (product)

## Related episodes from other shows

- [Embedded Hardware with the Raspberry Pi Team](https://hardwarepodcasts.com/podcast/the-amp-hour/2021-02-08-embedded-hardware-with-the-raspberry-pi-team) (The Amp Hour)
- [Productive Pi Hacks, Amazing Arduino Inventions, New Hardware Galore!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2023-07-27-productive-pi-hacks-amazing-arduino-inventions-new-hardware-galore) (The Electromaker Show)
- [Raspberry Pi Pico 2 released! Particle Tachyon 5G SBC! So Many RP2350 devkits! Hoorah!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2024-08-14-raspberry-pi-pico-2-released-particle-tachyon-5g-sbc-so-many-rp2350-devkits-hoor) (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)
- [ESP32 vs Pi Pico, ShaRPiKeebo Tiny Linux Deck, new Arduino kit and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-05-13-esp32-vs-pi-pico-sharpikeebo-tiny-linux-deck-new-arduino-kit-and-more) (The Electromaker Show)

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