EP#393: Recyclable PCBs, EOL Design, Cold Cuts

EP#393: Recyclable PCBs, EOL Design, Cold Cuts

Parker and Stephen discuss Infineon’s use of recyclable PCBs from Jiva Materials to create a soluboard, a recyclable and biodegradable PCB substrate, and its ecological and efficiency implications, an examination of the new Arduino Uno, which replaces the ATMEGA328P with two new models, Minima and Wifi, plus a CNC update and an extended meditation on saw blades and what they can and cannot actually cut.


More on these topics:


Infineon uses recyclable PCBs from Jiva Materials

  • The fibers are natural and have a lower impact than traditional glass based fibers.
    • 7.1kg and the carbon footprint of one square meter of standard FR-4 PCB is estimated to be 17.7kg.
    • Does anyone really know what “carbon footprint” means?
  • The non-toxic polymer that binds the fibers dissolves when immersed in hot water, leaving only compostable organic material. The polymer in the water can be disposed of in normal waste water.
    • 7.1kg and the carbon footprint of one square meter of standard FR-4 PCB is estimated to be 17.7kg.
    • A 60% waste reduction
    • Electronic devices can last FOREVER
    • Bad reviews vs. pollution vs. boiling the boards vs. useless promo items

Jiva Materials

  • Compatibility with current PCB Assembly processes
  • Repair, don’t replace!
  • Hoping for some Jiva experimentation
  • Board Mould
  • Mmmm, PCB soup…
  • Making puzzle badges but also, BOIL YOUR BADGE
  • But is the PCB Spaceworthy?

New Arduino Uno:

  • The ATMEGA328P is no more! Replaced with a 32-bit ARM Cortex M4.
  • Comes in two flavors:
    • Minima which looks to just be the MCU and supporting hardware.
    • WiFi which has 2.4Ghz capabilities and a LED Matrix?
  • The Minima has a proper SWD debug connector where the WiFi version does not?
  • Gripes with Arduino
  • Super crisp silkscreening
  • USB and HID Support
  • Raspberry Pie has bit the bullet

Once Year Since the CNC Project Began: An Update

  • We are cutting!
  • Getting garbage plywood and the state of Baltic Birch
  • Building the interior of the box truck
  • Always find a local source
  • Using the wrong blade can feel so right
  • SAW (blades)
  • Metal and wood and cold cuts
  • WARNING: PODCAST DANGER ZONE AHEAD

Good links:


Thank you for listening to the MacroFab Engineering Podcast! We’d love to hear what you think of the show so please tweet at us @MacroFab and join our slack channel at Macrofab dot com / slack or email us at podcast@macrofab.com.


Jaksot(448)

EP#8: Bits That Don’t Quit

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EP#7: The Art of Retention Force

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EP#5: Tilting Tubes

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EP#4: Linear Effects of Licensing

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Audio quality of the podcast leveled up! Stephen and Parker went over to The Pharmacy Recording Studio which is run by Josh Moore. He hooked them up with 2 (!) microphones and a nice an acoustically p...

26 Helmi 201617min

EP#3: Liquid Toroidal Electrons

EP#3: Liquid Toroidal Electrons

Stephen and Parker have been testing the main opamp for the OPA541. Stephen wrote a blog post detailing the opamp tests with simulation and real world testing.GitHub link to the repository for the SSP...

19 Helmi 201622min

EP#2: Mechanical MultiSIM Monsters

EP#2: Mechanical MultiSIM Monsters

Stephen continues his work on the Stupid Simple Power Supply (SSPS). He decided to go digital voltage control over analog. Also he has been trying out MultiSIM BLUE by Mouser for circuit simulation. S...

10 Helmi 201620min

EP#1: Opamp-timal Power Supply

EP#1: Opamp-timal Power Supply

Stephen talks about the Stupid Simple Power Supply (SSPS). He designed a OPA541 breakout board for testing. See figure 1.OPA541 Datasheet : Street price of $21.88.Parker brings up that blinky LEDs are...

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