# Ep 287: Raspberry Pi Woes, Blacker than Black, and Printing with Klipper

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2024-09-06
- Length: 1h 05m
- Episode: 287
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper
- Listen: https://hackaday.libsyn.com/ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper

## Summary

Hosts Elliot Williams and Al Williams discuss the RP2350 microcontroller erratum, where a hardware bug causes GPIO pins to latch high, forcing designers to use external pull-down resistors or software workarounds. They also explore a laser-based lawn care prototype, the rooting of cheap Wi-Fi repeaters via OpenWRT vulnerabilities, and a new ultra-black material made from plasma-treated wood. Finally, they debate the merits of Klipper firmware for 3D printing, highlighting its Linux-based architecture and modularity over traditional Marlin firmware.

## Chapters

- [0:01](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=1) Introduction: Hackaday Contests and What's That Sound
- [6:31](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=391) RP2350 GPIO Erratum and Hardware Bug Workarounds
- [18:36](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=1116) Laser Lawn Care and Wi-Fi Repeater Hacking
- [28:34](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=1714) Ultra Black Wood Material and Floating Displays
- [41:44](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=2504) Quick Hacks: 555 Timers, Silicone Prototypes, and Foot Keyboards
- [45:40](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=2740) Klipper Firmware: Linux-Based 3D Printing and Modularity
- [1:02:28](https://hardwarepodcasts.com/podcast/hackaday-podcast/2024-09-06-ep-287-raspberry-pi-woes-blacker-than-black-and-printing-with-klipper#t=3748) FCC OTARD Rule and Ham Radio Antenna Restrictions

## Topics

- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Security & privacy](https://hardwarepodcasts.com/topic/security-and-privacy)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Policy, trade & tariffs](https://hardwarepodcasts.com/topic/policy-trade-and-tariffs)
- [Mechanical engineering](https://hardwarepodcasts.com/topic/mechanical-engineering)

## Most relevant to

makers and hobbyists

## Mentioned

- Raspberry Pi (company)
- RP2350 (chip)
- Bus Pirate (product)
- OpenWRT (other)
- Klipper (other)
- Marlin (other)
- Vanta Black (other)

## Related episodes from other shows

- [The RP2350 with the Raspberry Pi Team](https://hardwarepodcasts.com/podcast/the-amp-hour/2025-01-28-the-rp2350-with-the-raspberry-pi-team) (The Amp Hour)
- [Rubber Duck Incarnate](https://hardwarepodcasts.com/podcast/the-amp-hour/2026-01-26-rubber-duck-incarnate) (The Amp Hour)
- [The Spark Gap - Episode 32](https://hardwarepodcasts.com/podcast/the-spark-gap/2015-05-06-the-spark-gap-episode-32) (The Spark Gap)
- [Moving House (And Lab)](https://hardwarepodcasts.com/podcast/the-amp-hour/2024-09-03-moving-house-and-lab) (The Amp Hour)
- [319: Squidly Tentacles](https://hardwarepodcasts.com/podcast/embedded-fm/2020-02-07-319-squidly-tentacles) (Embedded.fm)

## Citing this page

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