212 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#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
    MEP EP#205: Disgusting Surge

    MEP EP#205: Disgusting Surge

    MEP EP#205: Disgusting SurgeParker

    MacroFab PCB Specification Update



    PCBs now have advanced PCB specifications
    Stack Ups
    Advanced Via management
    UL Logo control
    Surface Finish




    PinoTaur REV 2 PCBs arrive

    Assembled Soon to a pick and place near you



    Stephen

    Hellhound preamp Episode 199

    Doing a partial product design prototype. Split into two.
    Back to back transformer design works well but has some unpredictable operation

    The primaries are not regulated as well as the secondaries

    Gyrator episode 173




    Looked at the 4 band equalizer on my scope and compared to the SPICE simulations

    Almost 1:1 with simulation


    $10 dollar switch

    Alternative?
    1004P6T1B4M7RE





    Rapid Fire Opinion

    Our favorite podcast episodes of 2019?

    Discrete Atomic Luffa Control

    Ben and Chris talking about 3D printers and Luffas


    Ken and Chip Gracey of Parallax Inc

    Chip and Ken are super passionate about semiconductors!


    Honorable Mention: The Fourth Rule of Robotics


    Thank you so much to our guests that have joined us on the podcast!

    Ben Heckendorn
    Chris Kraft
    Cliff Schecht
    Jason Cerundolo
    Al Williams
    Christopher Howell
    Phil Bresnahan
    Dillon Nichols
    Ken and Chip Gracey
    Kevin Beller
    Danny Rankin
    Roz
    Nickolas Peter Chelyapov
    Chrissy Meyer
    Greg Paulsen
    Shruthi Soora
    Gerard Hayes
    Zapp, Hyron, and the AND!XOR Team
    Joe Grand
    Mike Geyer
    Jeff Garoon
    Daniel Hienzsch
    David Guiness

    • 1 hr 11 min
    MEP EP#204: Forth Annual MacroFab Star Wars Christmas Special – C3PO Steals the Show

    MEP EP#204: Forth Annual MacroFab Star Wars Christmas Special – C3PO Steals the Show

    Spoiler Alert: This podcast contains HEAVY SPOILERS for Star Wars Episode 9 and The Madalorian series up to Episode 7. If you do not want spoilers turn back now.
    Josh Rozier

    By day, Roz is a spreadsheet slinger for the Umbrella Corporation
    When he is not wasting way too much time playing Star Wars RPG with your gracious hosts, he is typically doing his best not to burn down his shed with whatever project his ADHD allows him to focus on

    Hyr0n

    From 9 to 5 Hyr0n is security researcher, systems engineer, and corporate advisor of First Order security policy via Corellian power points
    From 5 to 9 he is a hardware hacker, designer of AND!XOR embedded system puzzles, and Shyriiwookian voice over of droid holiday VR porn

    Topics

    Episode 9 Thoughts

    This became the majority of the podcast somehow


    Why does it seem that all the power in the ship flows through the control panels?

    When ships get damaged, control panels explode

    This is more obvious in Star Trek if anything


    Lack of proper human to machine isolation
    Poor supply chain risk management


    Hardware hacking C3-PO
    Does StarWars have HeathKits for droids?

    Anakin supposedly built C3PO but there are lots of protocol droids like him so is C3PO a kit?
    C3PO is a protocol Droid, essentially a logic analyzer with ML


    The Mandalorian

    What are your thoughts so far (Storyline, length, fan service)?
    IG11 vs IG88
    Fan Service Differences
    Thoughts on manufacturing Mandalorian Armor
    Mando Rifle Scope


    Data Pad Security

    Resistance Reborn book
    New Disney EU meant to bridge EP8 and EP9


    The Energy of a Lightsaber

    How much total energy does the power source in the hilt need to hold?
    How fast does the energy need to be delivered (what is the wattage)?
    What is the total energy needed to cut darth maul in half?

    • 1 hr 43 min
    MEP EP#203: Lizard Brain Information - David Gunness of Fulcrum Acoustic

    MEP EP#203: Lizard Brain Information - David Gunness of Fulcrum Acoustic

    MEP EP#203: Lizard Brain Information - David Gunness of Fulcrum AcousticDavid Gunness

    Vice President of R&D at Fulcrum Acoustic
    Lead Product Designer
    Photographer
    Copy Writer
    Ambassador to Italy
    Facilities Maintenance
    Director of Calculus
    Technical Writer
    Lead Coffee Maker

    Fulcrum Acoustic

    Who are they and what do they do?
    What does it take to get into sound design?

    Education?
    Frequency Theory


    Passive Cardioid Technology

    Technology to eliminate rear low frequency radiation

    Where is this an issue?


    Active solution
    Passive solution
    Patent 10,123,111 B2 “Loudspeaker with passive low frequency directional control”


    Building a better coaxial speaker

    What is a coax?
    Beamwidth
    How is this validated/tested?


    Manufacturing enclosures with wood

    Why wood?
    Sourcing materials
    General Design
    Tolerancing considerations?
    Finishing and Covering

    Sanding
    Painting
    Spraying materials

    • 1 hr 3 min

Customer Reviews

JNaso ,

Awesome

Still awesome!

Whopperjaw MD ,

Skookum as frig

This podcast sets the standard for electrical engineering podcast. Always looking forward to listening to this podcast.

23gs ,

Enlightening and entertaining.

I don’t think there’s been an episode were I haven’t learned something new or pick up a tip...and had a chuckle at the same time. Great job guys!

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