Louis Rossmann’s fresh start in Austin, Tx Moved his business from New York to Austin, Texas Learn how to open and fix things Classes will be free Mercedes Makes Better Performance a $1,200 Subscription in Its EVs Subscription to make your car vroom vroom faster Acceleration from 0-60 mph is said to improve by 0.8-1.0 seconds and the overall characteristics of the electric motors are supposed to change as well Microjet Spray System Started 3d modeling the idea Amazon link Venturi Mist system wit...
Nov 28, 2022•57 min•Ep. 354
Jeep Prop Fan Thingy Jeep Prop Fan thingy Spec Sheet Connectors The Quest for 25 Amps TE Connectivity 1-1418362-3 Pg 63 of this catalog Haltech released a new PDM 10 8A 4 25A 2 Push Pull Arduino Opta Arduino's First Micro PLC supporting standard languages including LD (Ladder Logic Diagram) and FBD (Function Block Diagram) STMicro STM32H747XI dual-core microcontroller Opta Lite, Opta RS485, Opta WiFi High-power relay switching (4 x 2.3 kW) Manim Episode 340 Necrobiotic Synthesizers Finally got i...
Nov 18, 2022•55 min•Ep. 353
November 5, 2022 - Extra Life Recap Improvements to the script Thank you to everyone that hung out, supported, and donated! What is next for CNC Parametric cnc model in fusion Model by Ed Frazier https://grabcad.com/library/parametric-cnc-router-1 Changed to a 5x5 cutting surface All 8020 construction with good bit of milled aluminum Added a 40 series table ATP-5 aluminum by vista metals https://www.vistametals.com/assets/pdfs/products/atp-5-precision-tooling-plate.pdf Precision tooling plate Ca...
Nov 16, 2022•57 min•Ep. 352
Python Demo for Extra Life API Stream Date: November 5th, 2022 Python to OBS functioning! Websockets. What are they? HTTP is unidirectional where the client sends the request and the server sends the response Websocket data is continuously pushed/transmitted into the same connection OBS has a built in local server that you can establish a websocket with another application Python module obswebsocket Provides a wrapper for all the OBS websocket functions Can basically control anything in OBS it s...
Nov 04, 2022•46 min•Ep. 351
Python Demo for Extra Life API Stream Date: November 5th, 2022 Functionality so far Check Extralife API for donations This is done with the requests module This endpoint seems to return old and new donations There isn't a “new donation” end point it seems Get the donation IDs and compare them to a local file Local file is made with the pickle module Pickle allows you to take any data structure in python and “package it” into a binary file for storage. If there is a new donation ID that isn’t in ...
Oct 28, 2022•1 hr 1 min•Ep. 350
November 5, 2022 - Extra Life Haven't had a chance to work on this yet Going to stream working on it? Adventures in injection molding PINNACLE 5112C3 8% haze - this is pretty low. Any lower and it would be considered “clear” Low melt flow, excellent processability - Voids Two ways to create diffusion Haze Surface Texture Jeep Prop Fan Half bridges for each output Current sensing INA219 Inputs Found a product that will do the thermocouples on canbus Instead of that crazy LTC2986 chip Just expose ...
Oct 23, 2022•1 hr 2 min•Ep. 349
November 5, 2022 - Extra Life Content for the stream API for Extralife Custom plugin that goes to a Duke Nukem Sound Board Trying to get it to play gifs Working with Open Broadcast Software now Live podcast Nov 22 in Houston Microchip woes? Microchip has got back to us about the firmware - no issues on their end Suggested using the command line interface Originally thought pullups on the reset line but they are not needed Tried them with no luck Jeep Prop Fan Recently talked about designing a PC...
Oct 14, 2022•59 min•Ep. 348
November 5, 2022 - Extra Life I play games for children's hospitals Raised $5,169.42 last year Was the number one raiser for the Texas Children's Hospital What game for this year? What should I make for the stream? API for Extralife Duke Nukem Forever and Aliens Colonial Marines Custom Stream plugin for the games Live podcast Nov 22 in Houston Hacking FR4 for light transmission Using FR4 as a light diffuser Things to consider FR4 material Yellow Blue Green Gray Distance LED Angle LED brightness ...
Oct 07, 2022•44 min•Ep. 347
November 5, 2022 - Extra Life I play games for children's hospitals Raised $5,169.42 last year Was the number one raiser for the Texas Children's Hospital What game for this year? CNC Calibration 90 Dust Collection 2/4/5/6 in pipe Thinking I will do an overhead PVC solution Have to design a skirt capable of interfacing with a 4 in hose Battleship Texas Going to try to get someone on to talk about the restoration PCB Ruler Redux What do people want to see on them? What makes it actually useful? L...
Sep 30, 2022•53 min•Ep. 346
Pool Shark Update! Wolfspeed fab for NC is latest on CHIPS Act list 668,000 domestic manufacturing jobs Global Unemployment. Do we have enough people for this? What technology are they aiming for? Here’s the latest hot list of cool chip fabs coming to the US GlobalFoundries 180nm down to 12nm Intel Ohio New Mexico Arizona Micron Memory Chips Samsung High end computing Texas Instruments 45nm+ analog, embedded electronics Articles say it will complement other factories already in Texas TSMC 5nm Wo...
Sep 23, 2022•1 hr 9 min•Ep. 345
Differential probe design update Trying to reduce part count - Want to make it simple Decided to go with Caddoc 1776-C681 resistive dividers. Used this on the bias test system 1:100 divider with high voltage, good tolerance and good thermal performance Challenge is to get the dividers to fit 3d printed case Air Filter / Canister Turned out great so far will have to see how it holds up under the heat Pictures on the blog Digikey Newsletter Check Out Digi-Key’s Stock of Toshiba’s Power Management ...
Sep 17, 2022•47 min•Ep. 344
MEP EP#343: Bricking Bad Bricking Microcontroller - Watch those fuses Pic, AVR, STM Atmel ATXMEGA16A4U AVR studio and microchip studio AVRDUDE Air Filter / Canister Long Running Project between Chris Kraft and Parker Mods on the red Jeep necessitated moving the original air cleaner First design was all 3D printed around 2016 / 2017 This is right around when 3D printing large objects like this started to get fessable on a hobby printer PLA glass fiber Worked but the material couldn’t handle the u...
Sep 09, 2022•1 hr 1 min•Ep. 343
MEP EP#342: Hackery Experts HyR0n Mathematician Computer Scientist AND!XOR employee of the month Working on badges and things Hackery Previous Podcast Episodes Incognito Mode episode number 69 Arduino, The Gateway Drug To #BadgeLife episode number 109 Espress-ify? Designing Products Around the ESP-32 Platform episode number 144 Feel the Hum episode number 183 Better Encryption than Zoom, Firmware Stacks episode number 238 And a couple of the Starwars Specials DEFCON 30 AND!XOR Badge Its a watch,...
Sep 02, 2022•52 min•Ep. 342
MEP EP#341: Project Snackey Recap Project Snackey at Defcon30 What we did CTF Codes What went wrong What went right People’s reactions Improvements for next year Lock Picking Village Hardware improvements Physical Security
Aug 26, 2022•58 min•Ep. 341
MEP EP#340: Necrobiotic Synthesizers Project Snackey See y'all at defcon 30! Stuff you want to learn about? Canbus FPGA design AWS web development Manim - python My Spider-sense is Tingling Spiders are just hydraulic animals...
Aug 06, 2022•1 hr•Ep. 340
MEP EP#339: Educated Compromises Project Snackey Announcement video lands before this podcast gets released. Project Diffprobe Looking at teardowns of other diff probes ADA4817 2pA input bias -3dB bandwidth of 1050MHz Very low input capacitance Combine to make an instrument amp Perhaps going with an integrated instrument amp INA12 Page 27 of the datasheet - Right-Leg Drive Hardware subscriptions? BWM to offer heated seat subscription 18/mo 180/year 300/3year 415/unlimited These subscriptions are...
Jul 29, 2022•53 min•Ep. 339
MEP EP#338: Feature Complete or Minimal Viable Products Project DiffProbe Landed on the topology Stephen wants High voltage dividers Compensation capacitors CMRR calibration (120dB rejection) Offset correction Buffers and Instrumentation Amplifiers Differential Stage 10x and 100x attenuation means offsets have to be bang on Opamps (3 of them) Buffers Low input bias current Low offset Bandwidth? Differential amp Low offset. Capable of driving 50 ohm load to the scope Gain setting resistors Vishay...
Jul 22, 2022•58 min•Ep. 338
MEP EP#337: CSV File Woes Project Snackey Input Firmware is completed Output Firmware is skeltonized/frameworked Need to add a “Power Good” signal Auxiliary circuits need software resets on power cycling Due to how Arduino hardware/software works The Dangers of Basing your Project on Someone Else’s ExtractModel Fortran No Github One CSV file change causes script to break Is it really broken? What to do? DIY Meat Smoker Ideas ~$1600 for the smoker body “round” part Currently 534lbs JWST sends its...
Jul 15, 2022•1 hr 1 min•Ep. 337
MEP EP#336: Heirloom Documentation UtracerV6 The right way to do instructions Full table of contents Broken out into sections. The ref designators match the section Build Test At the end is a full calibration section Section for logging your calibration values A whole section for building enclosures and wiring dos4ever.com Project Snackey PCBA completed! Smoke monster is still contained within the circuit Wrapping up the wiring inside the machine before moving onto code Installed a kiosk receipt...
Jul 09, 2022•1 hr 5 min•Ep. 336
MEP EP#335: Your Toaster is Toast Project: Diff Probe Circuit Cellar design Hack a Day project Active Differential probe with 600V Common mode and 600V differential mode Measure virtually any two points. No need for ground reference. Perhaps a battery system with a boost converter? Excuse to finally use that 3d printer to make a case Basically all precision components UtracerV6 enclosure Decided to make an enclosure that better suits my use case Stripped down from last time. It does not need all...
Jul 02, 2022•47 min•Ep. 335
MEP EP#334: Double as good! Project: SNACKEY PCBs and Components arrived All PTH components fit Assembly starts tomorrow Nichicon Obsolescence Removing 8 and partial 2 of there SMT Aluminum Electrolytic lines Nichicon has 43 lines of SMT Electrolytic capacitors alone Lines they are getting rid of have these qualities: Standard range High reflow temp Low impedance New series is UBH which seems to partially cover what they are removing High Temperature Range Vibration Resistance Low temperature ES...
Jun 25, 2022•1 hr 1 min•Ep. 334
MEP EP#333: Cody's Corner - Q2 2022 Cody Endlich 10 years experience in electronic component distribution and commodities trade Currently the head of strategic sourcing at Macrofab Last seen on episode 318 to discuss Strategic Component Sourcing and MacroFab joining the ERAI What we saw in Quarter 2 2022 Russia's invasion of Ukraine Ukraine and Neon gas Neon gas is used in semiconductor production for running the lasers required for the lithography Lockdown hits Shenzhen as Covid Infections Incr...
Jun 18, 2022•48 min•Ep. 333
MEP EP#332: This Podcast Intentionally Left Blank USB-C will be mandatory for phones sold in the EU ‘by autumn 2024’ The rule will apply to other electronic devices including tablets, digital cameras, headphones, handheld video game consoles, and e-readers Laptops will have to comply with the rule at a later date What about laptops and devices that fall out of the 100W? USB “Extended Power Range” or EPR for 240W of power More Voltage 48V from 20V as max, still 5A Are there any USB Type-C connect...
Jun 11, 2022•48 min•Ep. 332
MEP EP#331: The PCB Plague Neutrik EtherCON Ruggedized RJ45 Lockable RJ45 cable within an XLR style housing Also come in a sealed version that offers IP65 rating Interesting PCB failures “The Plague” Black Pad Very poor to no solderability Effect of Moon Phase on Tombstoning Many factors play a role in the overall outcome of PCB assembly, especially when very small components are involved. Broadly speaking, tombstoning is a problem with very small 2-pin components (0201 caps and such) and we've ...
Jun 03, 2022•1 hr•Ep. 331
MEP EP#330: Rogue Gerbers - Jerry McDaniel of Customer Care at MacroFab Jerry McDaniel Has been at Macrofab for over 5 years Currently the Director of Customer Success Previous life, he was the CTO/CFO of Litigation Records Services A records retrieval company in Texas managing litigation records for both Plaintiff and Defense attorneys Application support for Presensoft Inc. for almost 11 years Customer Success How do you figure out how customer's act? What is the advice you can give to enginee...
May 27, 2022•54 min•Ep. 330
MEP EP#329: Supply Chain Crunches Reddit Question from r/ECE What are some pros and cons of becoming an electrical engineer? I'm a senior in high school, and I am giving great consideration to majoring in electrical engineering. What are some pros and cons that I should know about? From r/ElectricalEngineering - If you get an electrical engineering degree, you can get a software job. The reverse is not necessarily true. Pinotaur Supply Chain Crunches Replacing a Relay with a Mosfet Looked into S...
May 20, 2022•51 min•Ep. 329
MEP EP#328: Berry Based Physics with Collin Anderson Collin Anderson Computer scientist turned electrical engineer Has worked on things as varied as: Quantum key distribution at Los Alamos National Laboratory A tool to help decipher glyphs of the classical Mayan civilization FPGA firmware at the Ice Cube Neutrino Observatory Currently an engineer and co-founder of Orthogonal Systems An engineering and software development firm specializing in: Custom test & measurement hardware Databases Dat...
May 13, 2022•1 hr 11 min•Ep. 328
MEP EP#327: Mike Kahn of Elemental Machines Mike Kahn Been working in the high tech industry for over thirty years The bulk of this time he has been involved in the architecture and design of complex electronics and embedded systems across a wide variety of segments including general purpose computing, digital communications, digital video, medical devices and life sciences instrumentation Currently the Vice President of Device Engineering at Elemental Machines, a startup that has created a serv...
May 07, 2022•45 min•Ep. 327
MEP EP#326: The Infinite Finite Grid PART 2 : Is there a macgyver way to measure voltage without a multimeter? Lots of great suggestions in our slack channel Recreating older devices before digital multimeters where available Galvanometer Electrostatic Voltmeter Most of these require lots of experimentation or other precision devices to calibrate Let's explore the electrolysis method further Tools and measuring devices required Watch / time keeping Container of known volume Materials Distilled W...
Apr 29, 2022•50 min•Ep. 326
MEP EP#325: Metric Knuckle Keystone Cool Part Countersunk parts? Have you used any parts like that? Design considerations Possible Assembly issues Cool 16x2 character display How do I branch into Electrical Engineering? Is it worthwhile to get certifications? Projects Finding your path. Is there a macgyver way to measure voltage without a multimeter? Electroscope - pith ball or gold leaf Vacuum may be necessary...
Apr 23, 2022•1 hr 4 min•Ep. 325
