# Ep071: Measuring Micrometers, the Goldilocks Fit, Little Linear Motors, and 8-bit Games on ESP32

- Show: [Hackaday Podcast](https://hardwarepodcasts.com/podcast/hackaday-podcast)
- Published: 2020-06-11
- Length: 52m
- Page: https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga
- Listen: https://hackaday.libsyn.com/ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-games-on-esp32

## Summary

Hackaday editors Mike Szczys and Elliot Williams review a week of hardware hacks, starting with Lattice Semiconductor's brief attempt to restrict reverse engineering of its FPGA bitstreams, which was quickly retracted. They then examine Mike Rankin's 'ESP32 Berninator,' a microscopic laser cutter utilizing tiny linear motors and surface-mount nuts, and Andrew Khan's CNC scroll saw with complex polar-Cartesian kinematics. The episode also covers Rossum's ESP32-based 8-bit game emulator, Mark Quist's open-source audio modem, and a deep dive into the Turing-complete capabilities of the `printf` function.

## Chapters

- [0:03](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=3) Lattice FPGA Licensing Controversy
- [6:58](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=418) ESP32 Berninator Micro Laser Cutter
- [9:42](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=582) CNC Scroll Saw with Polar Kinematics
- [14:24](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=864) ESP32 8-Bit Game Emulator
- [19:19](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=1159) Open Hardware Audio Modem
- [22:08](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=1328) Abusing printf for Turing Completeness
- [30:55](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=1855) Goldilocks Fit Tolerance Testing in OpenSCAD
- [35:46](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=2146) Quick Hacks and Netbook History
- [47:06](https://hardwarepodcasts.com/podcast/hackaday-podcast/2020-06-11-ep071-measuring-micrometers-the-goldilocks-fit-little-linear-motors-and-8-bit-ga#t=2826) Vernier Calipers and Micrometers

## Topics

- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [Chips, FPGAs & semiconductors](https://hardwarepodcasts.com/topic/chips-and-fpgas)
- [Mechanical engineering](https://hardwarepodcasts.com/topic/mechanical-engineering)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Prototyping & iteration](https://hardwarepodcasts.com/topic/prototyping)
- [Test & measurement](https://hardwarepodcasts.com/topic/test-and-measurement)

## Most relevant to

makers and hobbyists

## Mentioned

- Lattice Semiconductor (company)
- ESP32 (chip)
- iCE40 (chip)
- ice storm (tool)
- simbiflow (tool)
- Digi Key (company)
- Pemnet (company)
- Atari 800 (product)
- Nintendo Entertainment System (product)
- Sega Master System (product)
- ATmega1284 (chip)
- OpenSCAD (tool)
- Mitsutoyo (company)
- Dinu (company)

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- [044 - Scots Army Knife](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2021-01-03-044-scots-army-knife) (Unnamed Reverse Engineering Podcast)
- [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)
- [An Interview with Bart Dring](https://hardwarepodcasts.com/podcast/the-amp-hour/2019-04-15-an-interview-with-bart-dring) (The Amp Hour)
- [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)
- [017 - Supercon 2018 Part 2](https://hardwarepodcasts.com/podcast/unnamed-reverse-engineering-podcast/2018-11-11-017-supercon-2018-part-2) (Unnamed Reverse Engineering Podcast)

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