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.


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EP#32: Erroneous Enclosures of Enormous Energy

EP#32: Erroneous Enclosures of Enormous Energy

Podcast NotesStephen brewed a batch of beer over the last weekend with his new electric brewing setup. It is not complete yet but it does work. Stephen converted his brew kettle to include a 4500W hea...

9 Syys 201627min

EP#31: Embedded Brewing with Arduinos

EP#31: Embedded Brewing with Arduinos

Podcast NotesParker designed the Macro Duino! Basically a Arduino clone using Type C USB, a FT230X as the USB UART bridge, and proper power switching with the Ti TPS2113A. See Figure 1. Also supports ...

2 Syys 201633min

EP#30: You won’t believe this ONE WEIRD Engineering trick

EP#30: You won’t believe this ONE WEIRD Engineering trick

Podcast NotesParker is working on streamlining the Selective Solder Process at MacroFab. Writing a script that will take XYRS data and generate the G-Code for the machine.Design work on a calibration ...

26 Elo 201634min

EP#29: Modular Toilet Humor

EP#29: Modular Toilet Humor

Podcast NotesStephen is currently working on DipTrace part libraries and templates for DRC and CAM file generation. Should have an article out next week about it. GitHub repository for DipTrace files ...

19 Elo 201627min

EP#28: Dissolving Energon Cubes

EP#28: Dissolving Energon Cubes

Podcast NotesStephen has been running tests on the Energon Cube for the SSPS. So far everything is working great. Check out Stephen's blog post update:  Super Simple Power Supply "SSPS" Design (Part 3...

12 Elo 201631min

EP#27: If There is a Bug, You Can Fix It

EP#27: If There is a Bug, You Can Fix It

Podcast NotesOur Guest this week is Kwabena Agyeman who runs OpenMV. See Figure 1.The OpenMV project is about creating low-cost, extensible, Python powered, machine vision modules and aims at becoming...

5 Elo 201636min

EP#26: Super Simple Buss Bars of Power

EP#26: Super Simple Buss Bars of Power

Podcast NotesStephen has been working on making the copper buss bars for the SSPS Energon cube. See Figure 1.We calculated that the resistance of the copper buss bars is 0.00458 ohms or 4.58 mohm. Our...

29 Heinä 201631min

EP#25: Lousy Datasheet Buyouts

EP#25: Lousy Datasheet Buyouts

Podcast NotesStephen has completed the SSPS Analog board. See Figure 1. Testing will begin early next week.The Macro Amp that Stephen has been working on is almost done. He just needs to solder the th...

22 Heinä 201631min

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