Circuit Break - A MacroFab 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 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?

25 Joulu 20191h 43min

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

18 Joulu 20191h 3min

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

11 Joulu 20191h 5min

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! Has the water analogy gone too far?

4 Joulu 201957min

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 Wars BB8 style robot inside a bowling ball Controlled by leaning your body! Digikey - Now with more Vacuum! Tube Depot - stock on digikey NOS Matching Toshiba TCKE8xx eFuse ICs Datasheet is tough to find atm Parker has used the Ti TPS25926 in previous projects which is similar

27 Marras 20191h 21min

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 direct inside the UI now! RF tools - a very cool curved trace plugin Parker's major complaint about Zoom Centering in KiCad hasn't been an issue for atleast 2 years now Why did no one tell Parker :( EE Web - now with more TOOLS! All about Arrow More EDA tools then you can shake a stick at! Apple H1 Chip? Silly marketing wank Its just a custom MCU

20 Marras 20191h 12min

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 suppliers in China to repaint and remark “old, used and/or discarded ICs” to make them appear as new. He also told a testing laboratory in China to provide two versions of test reports – one to Vasquez with all the test results, and another “sanitized version” that had could give to the purchaser. 60 years in prison RPI 4 issues fixed? July 17th - RPI Forum Released an update package that “solves” a lot of the initial rpi4 launch issues. Lower USB power consumption Booting over network is now a possibility Hat reboot fixes

13 Marras 20191h 4min

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 versus say using a service to order things

6 Marras 20191h