Ep 124: Hard Drivin' with Graphene, Fooled by Lasers, Etching with Poison Acid, and All The Linux Commands

Hackaday Podcast · 25 Jun 2021 · 52m · Episode 124

What this episode covers

Hackaday editors Elliot Williams and Mike Szczys discuss a mix of hardware hacks, including Huygens Optics' micro-etching of glass with hydrofluoric acid, a debunked laser deflection project, and Caribou Labs' SDR hat for Raspberry Pi. They also cover a teardown of a Xiaomi wireless charger, the potential of graphene in hard drive manufacturing, and a teardown of a vintage France Crystal metronome.

Other shows on the same ground, closest first.

  • The Amp Hour · 1h 28m

    Headless Units and Baseless Batteries - KiCad Kickoff Kopophobia

    Chris Gammell of Contextual Electronics explains his decision to release his KiCad video course to the public domain, citing the rapid evolution of the open-source EDA tool and a desire to give back to the community. Dave Jones from EEV Blog critiques a Kickstarter campaign for a 'graphene' AA battery, demonstrating through basic physics calculations that its claimed charging speed and capacity are impossible. The hosts also discuss the challenges of hardware accelerators, the technical feasibility of Google's micro-inverter competition, and new tools like an automated part-picking solver.

  • The Amp Hour · 52m

    An Interview with MG (Mike Grover)

    Security researcher Mike Grover (MG) explains how he creates cable implants by milling tiny PCBs with an OXO mill to fit inside USB cables. He details the process of designing minimal HID attack circuits using ATtiny microcontrollers and the challenges of home-reflowing BGA components on ultra-thin FR-4 boards. Grover discusses the shift from wired to wireless implants and the importance of rapid iteration in hardware security research.

  • The Amp Hour · 30m

    #440.2 - Interviews with Greg Davill and Michael Ossmann

    Greg Davill, an engineer at an Australian aero surveying company, discusses his hobbyist work with KiCad, detailing how he uses Fusion 360 and Python scripts to create realistic renders of PCBs by converting SVG layers. Michael Ossmann, founder of Great Scott Gadgets, announces the shipping of the GreatFET One, a high-performance USB hacking tool, and discusses the company's transition from garage to scaling, highlighting collaboration challenges and testing failures with the HackRF.

  • Embedded.fm · 1h 03m

    83: The First Time I Was Electrocuted

    Mark Johnson, the anonymous creator of the open-source Raman Pi spectrometer, discusses building a low-cost Raman spectroscopy device using a Raspberry Pi, 3D printed parts, and off-the-shelf components. He details the technical challenges of aligning optics, selecting a linear CCD over the Raspberry Pi camera module, and managing the intense documentation and video production required for the Hackaday Prize. Johnson also shares his background in electronics surplus and his fascination with high-voltage hobbyist projects like fusors.

  • Embedded.fm · 1h 08m

    184: Not Likely, Possible, or Safe

    Ben Krasnow, host of the Applied Science YouTube channel and an engineer at Verily (Google Life Sciences), discusses his work with high-speed cameras, prototyping techniques, and the economics of creator funding. He details the physics of high-speed imaging, his use of the OSH Chip and Processing for BLE prototyping, and his philosophy on failure and education. Krasnow also shares insights on staying current with technology via Hacker News and Twitter, and reflects on the shifting landscape of AI and self-driving cars.

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