# Ep 203: Flashlight Fuel Fails, Weird DMA Machines, and a 3D Printed Prosthetic Hand Flex

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2023-01-27
- Length: 1h 12m
- Episode: 203
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand
- Listen: https://hackaday.libsyn.com/ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand-flex

## Summary

Hackaday editors Elliot Williams and Tom Nardi discuss the 2023 Low-Power Challenge, highlighting Bruce Land's RP2040 DMA hack that creates a virtual CPU core using direct memory access hardware. They review a community-driven reliability database for resin 3D printers, a teardown of a Soviet Globus mechanical space computer, and Ian Davis's 3D-printed prosthetic hand. The episode concludes with speculation on NASA's Flashlight mission fuel issues and the failed Mattel ThingMaker 3D printer.

## Chapters

- [0:02](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=2) Introduction: 2023 Low-Power Challenge and Community Response
- [4:41](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=281) Sound Guess: Daniel Shimu's Clappermobile
- [8:13](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=493) Bruce Land's RP2040 DMA Virtual Core and DMA ASM
- [17:05](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=1025) Vogman's Community 3D Printer Reliability Database
- [23:13](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=1393) Manuel Caldera's Capacitor Leakage Tester and Ken Shirriff's Soviet Globus
- [32:45](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=1965) Ian Davis's 3D Printed Prosthetic Hand and Open Source Access
- [41:38](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=2498) Secure LoRa Mesh Communication Network and Interoperability
- [53:50](https://hardwarepodcasts.com/podcast/hackaday-podcast/2023-01-27-ep-203-flashlight-fuel-fails-weird-dma-machines-and-a-3d-printed-prosthetic-hand#t=3230) Mattel ThingMaker Failure and NASA Flashlight Mission Issues

## Topics

- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [Medical & health devices](https://hardwarepodcasts.com/topic/medical-devices)
- [Wireless & RF](https://hardwarepodcasts.com/topic/wireless-and-rf)
- [Materials & manufacturing processes](https://hardwarepodcasts.com/topic/materials-and-processes)
- [Energy & climate tech](https://hardwarepodcasts.com/topic/energy-and-climate-tech)

## Most relevant to

makers and hobbyists

## Mentioned

- Hackaday (company)
- RP2040 (chip)
- Elegoo (company)
- Anycubic (company)
- Formlabs (company)
- Prusa (company)
- Soviet Globus (product)
- Ian Davis (other)
- LoRa Mesh (product)
- Mattel (company)
- ThingMaker (product)
- NASA (company)
- Flashlight (product)

## Related episodes from other shows

- [PI Day, DOOM on the RP2040, Pockit Modular Computer, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-03-17-pi-day-doom-on-the-rp2040-pockit-modular-computer-and-more) (The Electromaker Show)
- [New Arduino Board, No More Pi Shortages, Absurdly Tiny Resin Printers, and More!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2023-01-12-new-arduino-board-no-more-pi-shortages-absurdly-tiny-resin-printers-and-more) (The Electromaker Show)
- [73: That's a Waste of Bits](https://hardwarepodcasts.com/podcast/embedded-fm/2014-10-22-73-thats-a-waste-of-bits) (Embedded.fm)
- [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)
- [Pi Powered Jägermachine, Anti-tracking hardware, Trojans inside AVR bootloaders, and more!](https://hardwarepodcasts.com/podcast/the-electromaker-show/2022-10-03-pi-powered-jagermachine-anti-tracking-hardware-trojans-inside-avr-bootloaders-an) (The Electromaker Show)

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