215 episodes

MacroFab's Engineering Podcast! Where Electrical Engineers, Parker Dillmann and Stephen Kraig talk about electrical engineering topics, DIY projects, and industry news. Sometimes cool people stop by the podcast to drop some knowledge.

MacroFab Engineering Podcast MacroFab, INC.

    • Technology

MacroFab's Engineering Podcast! Where Electrical Engineers, Parker Dillmann and Stephen Kraig talk about electrical engineering topics, DIY projects, and industry news. Sometimes cool people stop by the podcast to drop some knowledge.

    MEP EP#211: Credit Card Vigilantes - Skim Reaper

    MEP EP#211: Credit Card Vigilantes - Skim Reaper

    MEP EP#211: Credit Card Vigilantes - Skim ReaperPatrick Traynor

    CEO of Skim Reaper
    The Dasburg Family Preeminent Chair in Engineering in the Department of Computer and Information Science and Engineering at the University of Florida

    Christian Peeters

    CTO of Skim Reaper
    Ph.D Student in the Department of Computer and Information Science and Engineering at the University of Florida

    Skim Reaper

    What is Skim Reaper

    How does it work?
    Behind the name

    Did you know that when your PCB's first hit our production line we thought you were manufacturing a skimming device!


    Swipe vs Chip


    How did you start? What was the beginning of the project?
    The hardware itself

    Form Factor challenges
    Engineering Roadblocks you had to overcome?


    Growing your business

    What is your method for getting media coverage to spread the news about the Skim Reaper device
    Plans for future growth and market expansion


    So if someone detects a skimmer..what do they do?

    • 52 min
    MEP EP#210: Valentina Toll Villagra and Kyle Dumont with Allspice.io

    MEP EP#210: Valentina Toll Villagra and Kyle Dumont with Allspice.io

    MEP EP#210: Valentina Toll Villagra and Kyle Dumont with Allspice.ioKyle Dumont

    Experienced electronics designer having launched consumer products at large companies and startups for over 7 years
    Has developed low volume products for government and military applications and high volume commercial products

    Valentina Toll Villagra

    Project Manager exploring the intersection of physical and digital systems at Allspice
    Worked at Amazon expanding its national customer fulfillment network and rolling out internal productivity, collaboration and project management software applications to support the company's growth

    Allspice.io

    Rundown of the platform
    Where did the name come from
    How did it begin?

    The word “Agile” gets thrown around a lot.
    Mechanical engineers have 3D printing and Software developers have great design and test tools.


    What are your roles?

    Kyle – Development, strategy
    Valentina – Operations, customer success, marketing, product


    How big is the team?
    How does Allspice affect the engineer? The manager?
    Diff control? How is this implemented?
    Launch and the future?

    When does it launch?
    Are there plans to expand the offerings to other EDA tools?
    What is next?

    • 44 min
    MEP EP#209: A Bad User Experience

    MEP EP#209: A Bad User Experience

    MEP EP#209: A Bad User ExperienceParker

    Pinotaur REV2 is flipping a machine now

    Light strips using APA-102C-260-NEW


    Brew Cart welded up!

    Gotta design a hoist to lift the grain in and out of the mash tun



    Stephen

    Simulation of the week

    Bandpass with monte Carlo and gaussian tolerance


    Fermentation controller

    More Parts!

    40A Solid State Relay

    BEM-14840DA


    Tactile switch

    700SP7M1QEAP2BLKBLK


    4x4 tactile keypad

    ADC reading?
    RobotDyn Button Keypad 4x4 Module


    4x4 membrane style - kind of industrial

    Yootop 2 pcs 16 Keys Matrix Membrane Switch Keypad Keyboard for Arduino







    Rapid Fire Opinion

    MagicWolfi from the slack channel asks

    "How is it done in the factory and maybe some ideas what to do at home? This is painful if it is more than a few boards."


    The 5 best arduino projects

    • 1 hr 3 min
    MEP EP#208: Brian Kaczynski with Second Sound

    MEP EP#208: Brian Kaczynski with Second Sound

    MEP EP#208: Brian Kaczynski with Second SoundBrian Kaczhnski

    Brian earned his Masters of Science in Electrical Engineering from Stanford University in 2001
    Has worked since 1999 as a mixed-signal/RF ASIC designer focusing mainly on LAN applications such as Wi-Fi, Bluetooth, USB, etc
    His passion for music and desire to bridge the gap between acoustic/electric instruments and music synthesizers (both analog and digital) inspire his current work

    Second Sound

    Why the name Second Sound?

    It sounds cool and refers to a quantum mechanical phenomenon


    How many employees?
    ACO100 and ACO160 ICs

    What is an audio controlled oscillator?

    Frequency detection


    ACO160 vs ACO100
    Moving from custom Ic to Firmware solution?

    What drove this decision?
    How does this differ from the hardware solution?
    Will you be offering the ACO100 IC?


    Development Boards


    Integrated Circuit creation

    How did you go about designing these chips?

    Software?
    Required Files?


    What was your process of getting them manufactured?
    Tips and tricks for people wanting to manufacture Ics?
    Challenges and what to avoid?


    What changed to enable going from a chip design to a MCU firmware based design?

    • 1 hr 4 min
    MEP EP#207: Beating Dragons with Quarters

    MEP EP#207: Beating Dragons with Quarters

    MEP EP#207: Beating Dragons with QuartersParker

    PinoTaur Revision 2

    Passes smoke and programming test
    Onward to shipping it off to testers and programmers
    Have a friend that has a couple empty pinball cabinets
    List for Revision 3

    Change fuse holders to Keystone 3588
    Fix a couple none chamfered traces
    Update Logos
    Full backside artwork




    What is next for the PinoTaur project?

    LED Boards using the APA-102C-NEW-260 that I have been testing
    Wiring Harness Designs
    Audio Amp for the RPI

    PCM5122 + Class D Amp





    Stephen

    Simulation of the Week

    AC analysis
    2nd order low pass filter
    Sallen-Key topology
    Two examples with different cutoffs and Q
    Next week - Monty Carlo and Gaussian distributions of tolerances


    Fermentation Controller

    Resurrecting the walking dead
    Schematic is getting updated
    Modifying system design for buttons instead of membrane switches

    This is for robustness


    Will be milling enclosures

    Most of the layout is complete
    Need to position screen

    • 39 min
    MEP EP#206: The Analog State of Amazon Brand Names

    MEP EP#206: The Analog State of Amazon Brand Names

    MEP EP#206: The Analog State of Amazon Brand NamesParker

    PinoTaur

    PCBA should be done tomorrow when this podcast comes out
    PTH parts ordered from Mouser


    Brewery Setup

    Brewery Pots complete
    Tube straightening
    Need to weld the cart
    Go to a tiered setup just to reduce footprint? Dunno yet.



    Stephen

    Dave Jones to the rescue

    With spit...


    New resistor kit

    3350 1% 1/4W resistors
    134 Different Values
    Breadboard techniques


    LT spice Simulation

    Full Wave Rectifier
    Three different opamp choices

    LM741
    TL072
    OPA1678


    Looking at the differences between the opamps and the diode choice


    Comparators

    Analog and Logic
    Input offset and bias currents
    Propagation Delay
    Overdrive



    Rapid Fire Opinion

    AllSpice
    SecondSound

    Frequency to Voltage converter
    ACO160

    • 1 hr 6 min

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