Hackaday Podcast 102: Raspberry Pi Microcontroller, Microphone Killswitch, and a 45-Degree 3D-Printer

Hackaday editors Elliot Williams and Mike Szczys sift through a week of excellent hacks. Big news is of course the Raspberry Pi microcontroller which Elliot had a few weeks to play around with on the bench before the announcement — it has some fascinating programmable modules (PIO) built in! Philips designed an LED light bulb that under-drives the LEDs for efficiency and long life. And Amazon added a nice little hardware disable circuit for the microphone in the Echo Flex — a rather extreme teardown shows how they did it. Plus we talk about an open source long-range RC protocol, wall-sized pen plotter art, and a 3D printer that angles the nozzle to avoid needing support.

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Direct download (~65 MB)

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Episode 102 Show Notes:

New This Week:

• All Remoticon workshop videos have now been published: 2020 Hackaday Remoticon
• Here are some of our favorites:
  • Keynote: Alfred Jones Talks About the Challenges of Designing Fully Self-Driving Vehicles
  • Remoticon Video: Circuit Sculpture Workshop
  • Remoticon Video: Learning The Basics Of Software-Defined Radio (SDR)
  • Remoticon Video: Learn How To Hack A Car With Amith Reddy
  • Remoticon Video: How To Reverse Engineer A PCB
  • Remoticon Video: Basics Of RF Emissions Debugging Workshop

Interesting Hacks of the Week:

• 3D Printing Without Support Material Thanks To An Additional Axis
  • 3D Printing In Five Axes Makes The World Flat
  • 3D Printering: Non-Planar Layer FDM
• LEDs From Dubai: The Royal Lights You Can’t Buy
  • What Happened To The 100,000-Hour LED Bulbs?
• Pen Plotter Draws Maps Directly On The Wall
• Is Your Echo Flex Listening?
• ExpressLRS: Open Source, Low Latency, Long Range RC Protocol
  • GitHub – pascallanger/DIY-Multiprotocol-TX-Module: DIY Multiprotocol TX Module
• 3D Printing Air Filter System Does A Lot

Quick Hacks:

• Elliot’s Picks:
  • The (Probably) Most Thoroughly Commented Linker Script For The SAM D21 MCU
  • Doing WiFi With Software Defined Radio
  • Apple II Prints Off The Breaking News
• Mike’s Picks:
  • Handheld Farkle Really Sparkles
  • Arduino Wannabe Should Have Used A 555. Oh Wait, It Does.
  • DIY LEGO Record Cleaner Is Revolutionary

Can’t-Miss Articles:

• Raspberry Pi Enters Microcontroller Game With $4 Pico
• TV Detector Vans Once Prowled The Streets Of England
• Second-Hand Television SHINEs, Takes Down Entire Village’s Internet