Macrofab Engineering Podcast

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 hu

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

MEP EP#202: Not Into The Meat LoafParker PinoTaur Revision 2 is ordered! Should be ready early January Cable construction and design Electrical Components where do they come from? COO or Country Of Origin Mouser has a new API Arrow has an API but... Brewery Update Electrical box needs wire management Majority of the fittings arrived Tube straightner Parker's house will end up being half tools and half projects Stephen SMPS design with polygons Another Ti Webench design to the rescue! 12V down to 3.3V Need to test the temperature performance Power up testing - overshoot? Watch out for clearances between components with PCB manufacturers JLC PCB multiple design requirements? Learn more is blank... R.F.O. Ben’s Single Chip Atari 2600 Portable Parker helped figure out how the chip works Werma multicolour LED beacon displays 200,000 colors The colors duke...the colors

MEP EP#201: The Wheels Are Finally OffParker Air Raid Siren Update Ordered Power System for Badge Testing Will post the design when it is verified to work Looking for IC’s for the lithium battery version Type-C USB and power delivery would be nice features Brewery Building Soldered some stainless steel Electrical Box almost completed Need to wire up the pump switches The joke is that brewing is 90% cleaning and 10% paperwork Stephen How easy is it to make a game console? Had the idea from the pi touchscreen Only solder. No electronic design LCD Screen Power boost 1000 Lipo Battery Raspberry pi zero Aluminum - $30 Buttons and dpad? Tactile buttons dont feel right I dont like the idea of sawing up a SNES controller pcb Adafruit ideas R.F.O. DeepPCB: Pure AI-Powered, Cloud-Native Printed Circuit Board Routing 24 hr turn around The hardest part of PCB routing is Placement Solder mask color clearance? Check with your pcb manufacturer!

MEP EP#200: Rotary Alarm SystemParker Air Raid Siren Completed Working on the power sub system for a D.C. Badge Based on the successful DOOM SAO power system USB Type-C for “cable” power 5.1K on both CC pins Gives us 1.5A at 5V which is plenty of juice Alkaline Primary Cells TPS2113 for switching between cable power and the batteries SAO connector implementation with proper current limiting Gonna try a small little buck switcher TLV62568 to knock the USB and battery voltage down to the 3.3V we need. Going to design a lithium powered version that can recharge over the Type-C Brewery Building is next project MacroFab has guided tours in the platform. Let me know how they work. Stephen Multi Layer PCB Finishing up a 6 layer PCB with mixed signal Top GND Inner1 POWER POWER Bot Multi Transformer solution for preamp power supply Should I just go with my already proven SMPS instead? R.F.O. Cheating At Bowling, The Hacker Way Star War

MEP EP#199: High Voltage Gyrators and KiCad PluginsParker 50V power pack update Managed to safely remove the cells Protection circuit is functioning correctly One of the 4 banks is “bad” Scrapping all the 18650’s for future projects Helping Ben debug the Atari Junior 2600 Single Chip system Atari 2600's typically have 3 main ICs 6507 CPU RIOT (RAM and I/O) TIA (Graphics and Sound) Air Raid Siren all printed Needs final fitment and assembly to be completed! Stephen Rackmount case Designed a rackmount case for a 1u preamp New v-score bend method that works great on aluminum A mixture of chamfer and cut relief Can be bent by hand Back to Gyrators 300V 4 band EQ using high voltage Mosfets as gyrators Gyrators first mentioned on Episode 173 of the MEP Wanted to solve the issue of not having to make more power supply rails About +/- 12is db per band 80hz, 220hz, 750hz and 2k R.F.O. KiCad Action Plugins Run your KiCad Python scripts dir

MEP EP#198: Digital RazorbladesParker Pinotaur REV 2 REV 1 is being tested inside of a pinball machine ABC (Automotive Butt Cooler) Idea for DEFCON? Lithium battery pack fix? Mother’s electric bicycle 50V pack all 18650s The pack is good but no output Carburetor rebuilding trick? Stranded copper wire as a "brush" 4 wheeler Generator Stephen Beer monitor Still need a name Parker's parts have arrived Need to get solid state relays in Mount to or case? Need to look further into heat transfer Going to machine the cases soon R.F.O. Check Your Halloween Candy For Malicious Payloads USB sticks instead of razor blades and drugs in your kids candy Yageo buying KEMET? 1.8 Billion Dollaros USI MT7697H Development Kit for Alexa Connect Kit Custom hardware for Alexa Arduino Zero Compatible $196.98 192 MHz Cortex-M MCU and a WiFi/Bluetooth module Plea deal for man who sold fake chips to US military He instructed supplier

MEP EP#197: Designing in Color – Greg Paulsen on 3D PrintingEpisode 200 is Coming Up! Question / Answer setup like Episode 100 Send them via Audio Format to podcast@macrofab.com Greg Paulsen The leader of the Application Engineering team at Xometry an online instant quoting platform for custom manufacturing projects, which utilize a professional network of thousands of manufacturers His background is in applied additive manufacturing, having experience as an engineer, running machines, and ultimately using the parts Was last on the podcast for episode 181 where we talked Xometry, Pizza, and digital manufacturing 3D Printing as a Service What is 3D printing, what makes it different from CNC, molding? Specifications for 3D printing How does the designer give the specifications/tolerance? Screws: 3d printing threads, self tappers, inserts Does and don'ts of designing stuff for 3D printing 3D printing in scale - how do you scale up? The pros and cons of running your own 3D printer ve

MEP EP#196: Foamy Power Factors - Electrolytic Capacitors with KEMETEpisode 200 is Coming Up! Question / Answer setup like Episode 100 Send them via Audio Format to podcast@macrofab.com Ivan Quiroz Over 19 years of electronic design and development experience in different industries ranging from aviation to industrial automation His technical expertise surrounds the intrinsic requirements and detailed development of circuits In his down time, he likes to develop escape room puzzles, sensors, and anything he can 3D print Suzana Jankuloska Is an electrical engineer from Macedonia Has been with KEMET for 7 years and as a Product Manager of Electrolytic Capacitors for 3 years Loves solving problems and sudoku and is a fan of martial arts and the movie Ip Man Electrolytic Capacitors Discuss ESR, ESL, Dissipation factor, Tan Delta, Ripple current, and life span How to read the datasheet for an electrolytic capacitor beyond the value/voltage/dimensions impedance at a known switching fr

MEP EP#195: Mach 5 Sandpaper - MIT Rocket TeamEpisode 200 is Coming Up! Question / Answer setup like Episode 100 Send them via Audio Format to podcast@macrofab.com Charlie Garcia Attended space camp as a kid every year he could and became one of the counselors Enjoys sharing his love of space exploration with people of all ages and walks of life through various mediums In 2018 he lead the MIT Rocket Team as President to launch Project Hermes to 32,400 f Now, as the Publicity Chair of the MIT Rocket Team, Charlie hopes to inspire others to explore the heavens When Charlie isn’t building rockets, he is using his telescope, tinkering with his 3D printer, or enjoying a fantasy novel Luka Govedič Is a 20y old sophomore from Slovenia Majoring in Electrical engineering and Computer science Joined the MIT Rocket Team last fall Currently the leader of the avionics subteam Also part of the MIT varsity soccer team Likes to play frisbee, drums, and compose music What is the MIT Rocket Tea

MEP EP#194: Adult supervision not required - Tilt 5 with JeriEpisode 200 is Coming Up! Question / Answer setup like Episode 100 Send them via Audio Format to podcast@macrofab.com Jeri Ellsworth Self-taught electrical engineer and entrepreneur with over 20 plus years experience designing and building mass market consumer electronics Assembled the initial hardware R&D team for the Valve Software and was a key contributor to the technology used in the popular HTC Vive While at Valve, she began work on the AR technology that would later become the basis for the technology behind Tilt Five, where Jeri serves as CEO and Co-Founder Topics What is Tilt Five? Kickstarter Campaign How does it function? The Industrial design behind the project? How important was getting the weight to < 90 grams? How did you do it? You have brought lots of products to consumer markets: Prototyping your “finalized” product or first article Parts with High NRE fees like Injection molding Elec

MEP EP#193: Robots Have Fall DamageEpisode 200 is Coming Up! Question / Answer setup like Episode 100 Send them via Audio Format to podcast@macrofab.com Matthew Prater Started out as a radiochemist making diagnostic Positron Emission Tomography agents for 15 years Went to teach chemistry and research classes in public schools for 5 years Now teaching at the University of Advanced Technology in Tempe, AZ as a professor of robotics and embedded systems Topics What did you do as a radiochemist? Antimatter? Your roll at UAT? Research Robotics and embedded systems degree? Student Innovation Projects and Performance studio projects What are they? What is your contribution? Are they assigned or do students pick them?

MEP EP#192: The Fourth Rule of RoboticsEpisode 200 is Coming Up! Question / Answer setup like Episode 100 Send them via Audio Format to podcast@macrofab.com Parker Hayward Tigershark Hasn’t electrocuted anyone yet! Ordered PinoTaur REV 2 Slight layout tweaks Fixed the Relay problem Silkscreen labeling changes Air Raid Siren Stephen Eepartpicker Thinking of what comes first Probably a resistor Would like to see opamps Template? Fermentation controller Moar parts arriving Level Shifter for the screen? R.F.O. Analog engineer's calculator Filter calculations Amplifier calculations Parasitics A/D noise calculations Inspect AR Workbench of the future The Little Robot that Lived at the Library The Illusion of a Personality

MEP EP#191: Fork Lift Adventures Narrated by Daniel HienzschDaniel Hienzsch Founder of Rheingold Heavy and Manufacturing Reports Is passionate about education, and works every day to demystify technology and teach how to measure the world around you Rheingold Heavy and Manufacturing Reports is Dan’s effort to provide the community materials he wished he had when he was first getting started in electronics and technology Also drove a forklift for a living and suggests you should give it a try PCB Manufacturer Reviews What is Manufacturing Reports? Brief overview. What is Rheingold Heavy and how did that evolve to form Manufacturing Reports PCB Manufacturers Reviews What Criteria do you look at? Things like “How good does it look” are subjective. How do you eliminate this? Is there a test PCB? Has a PCB manufacturer come back about all the “interesting” features What things are on the test pcb? Why HASL? One criteria I would like to see is resistance to reworking Board hous

MEP EP#190: Sealed TigersharksRecap of the Design Contest 29 entries Judge List Charlyn Gonda Joe Grand Sophi Kravitz Whitney Merrill Winner List 1st : Parker Newman with the Room Temperature Cup Holder 2nd : Dillon with the Clap-Activated Applause Machine Third : SirDan with the Unpluginator Podcast Fav: Jeffrey Bernath with the Mouse Controlled Mouse Controller Parker Fixing Hayward Tigershark One motor not working Motor is a “sealed” unit MC33887PEK UHE1H222MHD6 Winter Project Upgrading a golf cart to 48V EZ-GO TFT Gotta go fast! Stephen Fermentation controller Got enclosure in Screen still not fully working Kingst LA2016 16 channel @ 200MHz Can decode 8080 parallel Rapid Fire Opinion (Or something...) Discrete Pong! We talked about this way back in episode 108 Was a bunch of posts on the EEVblog forum Now there is a good website with a bunch of good info and schematics Discrete op amps! Field guide to tran

MEP EP#189: Not Even My Final Form - Jeff Garoon on Industrial Product DesignJeff Garoon Y-Combinator alumni from the Winter 2016 batch Currently serves as COO of FlowCommand At FlowCommand, Jeff is responsible for all hardware design, firmware development, and operations Spent his early career as a Production Engineer and Lead Completion Engineer at Oxy USA Has been on Y-Combinator’s alumni application review committee for the last 3 cohorts, has raised three rounds of financing, and manages a staff of 17 engineers Member of Incubate USC, where he has assisted in writing undergraduate coursework on accelerators and incubators Industrial product design and testing What makes a product an industrial device? Prototyping Industrial Hardware Arduino and development boards -> First Article What kind of regulations and certifications do you have to work with? How to make it work when you are bootstrapping Class 1 Div 1/2 Testing/validation/documentation Explosion Proof Devices and C

Design Contest Wrap Up - Thanks so much to our sponsor, Mouser Electronics for sponsoring the contest. Our Judges will be wrapping up there choices by the next podcast. Thanks to our judges: Joe Grand Whitney Merrill Charlyn Gonda Sophi Kravitz Announcements for the winners the Judges pick will be on the Blog and normal Social Media places Winner of the MacroFab Engineering Podcast Favorite is.... jeffreybernath with the Mouse Controlled Mouse Controller! Thank you to everyone that entered! There is still a chance to win a prize based on who the judges pick. To see all the entries check out Hackaday.io Parker Finishing the Design Contest Trophy Raspberry Pi with the Touch 7” screen Guizero as the application framework WiFi connectivity handling with RaspiWiFi Hiding the cursor with unclutter Getting Mars Weather Data Keeping the Pi from turning off the display and sleeping Stephen Fermentation Controller (still needs a name) Processor: STM32F091RCT

Removing the Waterworld from Product DevelopmentThe MacroFab Engineering Podcast Design Contest sponsored by Mouser Electronics ends this Friday August 31st! Enter your Useless Machines now! We have cash prizes up to $1000 for the winners. More information can be found here! Mike Geyer Leads Marketing & Business Development for Fictiv True passion lies in transforming the manufacturing industry Having worked at Caterpillar, Autodesk, and Kaiser Aluminum, he has seen first hand the waste and inefficiencies that permeate the market From large Fortune 500 manufacturers to emerging technology startups, Mike has worked to solve a wide array of business challenges across the industry Experience with hardware entrepreneurs, manufacturing venture capital firms, large format additive manufacturing, closed-loop sensor networks, and fabrication of generative automotive chassis provide him a unique perspective on the rapidly changing landscape of manufacturing. At Fictiv he is currently focused on the d

So You Want To Eat Electrons?The MacroFab Engineering Podcast Design Contest sponsored by Mouser Electronics date has been extended! The contest is to design Useless Machines! We have cash prizes up to $1000 for the winners. The deadline is August 31st and it is closing fast! More information can be found on here! Parker Been taking a break from Electronics post Defcon Doom SAO Dash Installed aftermarket A/C into the Wagon Stephen Fermentation controller for brewing Processor STM32F - maybe 0 family because UART AMW007 Serial Wifi Module Takachi Fc series Aluminum Control Box 6 DS18B20 probe inputs via an XLR style connector Mindprint DTC The first one is fixed! Woohoo! R.F.O. How not to Light Pipe -HAD Fail of the week Making PCB light pipes and unique lighting effects This can be done well The right LEDs Brightness Reminds Parker of SAO style backlit PCBs The “terrible” 3 cent MCU – a short survey of sub $0.10 microcontrollers Are cheap MCU's terrib

MEP EP#185: What You Are Designed To Do – A Joe Grand Manufacturing AdventureThe MacroFab Engineering Podcast Design Contest sponsored by Mouser Electronics deadline has been extended! We have cash prizes up to $1000 for the winners. The deadline is August 31st and it is closing fast! More information can be found on here! Joe Grand Also known as Kingpin Computer engineer, hardware hacker, product designer, teacher, advisor, runner, daddy, honorary doctor, TV host, member of legendary hacker group L0pht Heavy Industries Proprietor of Grand Idea Studio. Has been creating, exploring, and manipulating electronic systems since the 1980s Previous podcast appearance was on MEP EP#73: Joe Grand: The Origin Story On-shore Verse Off-shore Manufacturing Pros and cons? Dealing with the difficulties Time difference Language barrier Cultural differences Impact of tariffs Supply Chain Security Delivering instructions for unique and custom designs Production: What is it like to spin up 30