Colin O’Flynn (@colinoflynn) spoke with us about security research, power analysis, and hotdogs. Colin’s company is NewAE and you can see his Introduction to Side-Channel Power Analysis video as an intro to his training course. Or you can buy your own ChipWhisperer and go through his extensive tutorials on the wiki pages. ChipWhisperer on Hackaday ColinOFlynn.com Some FPGA resource mentioned: Fpga4fun.com TinyFpga.com MyHdl.org (Python!)

Carlos Maltzahn joined us to talk about graduate studies in open source software, research incubators, and how software development tools can be used to aid the reproduction of scientific results. Carlos is the founder and director of the Center for Research in Open Source Software (CROSS). He is also an adjunct professor of computer science and engineering at UC Santa Cruz. Some projects we spoke about: Jeff LeFevre — Skyhook: using programmable storage in Ceph to make Postgres and other databases more scalable and elastic (skyhookdm.com) Ivo Jimenez — Black Swan: using DevOps techniques and strategies to speed up the systems research delivery life cycle (falsifiable.us) Kate Compton — Tracery2 and Chancery: using open source software to support artists and poets (tracery.io)

Ori Bernstein (@oribernstein) joined us to talk about the dielectric constants of foods, reflective energy steering, and smart microwaves. Elecia got a little silly. Ori works at Level Hot Pantry for more about the smart microwave, check out his !!ConWest talk. Ori has a github and personal site. EMSL papadum testing (where our thumbnail came from, with permission) Hackaday explained recently why grapes explode Short intro to how a microwave works

Jennifer Wang (@jenbuilds) spoke with us about machine learning, magic wands, and getting into hardware. For more detail about her magic wand build, you can see Jen’s Hackaday SuperCon talk or her !!ConWest talk. The github repo is well documented with pointers to slides from her SuperCon talk and an HTML version of her Jupyter notebook. Check out this good introduction to machine learning from scikit-learn. It was their choosing the right estimator infographic we were looking at. (Elecia has bookmarked this list of machine learning cheat sheets.) Jennifer’s personal sites are jenbuilds.com and jewang.net. She recommends the Recurse Center and wrote a blog post on her experience there.

We spoke with Laughlin Barker of OpenROV (@OpenROV) about underwater drones, underwater navigation, underwater exploration of the Antarctic, and extraordinarily large (underwater) jellyfish. Watch this video of a Trident ROV being eaten by a shark… yes, you get to see the inside of a shark. S.E.E. Initiative: Science Exploration Education from National Geographic Laughlin left us with a coupon code for the Trident ROV. Please remember to invite us along on your ROV’ing.

Combining a love of engineering with a love of words, Jenny List (@Jenny_Alto) is a contributing editor at Hackaday (@Hackaday). Jenny’s writing at Hackaday including Debunking the Drone Versus Plane Hysteria and Ooops, Did We Just Close An Airport Over a UFO Sighting? Previously Jenny worked for Oxford English Press working on computational linguistics software. While there she wrote post about the word “hacker”. Elecia has been secretly dreaming of being a lexicographer since reading Word by Word: The Secret Life of Dictionaries by Kory Stamper.

Chris (@stoneymonster) and Elecia (@logicalelegance) talk about design patterns, conferences, and Molotov cocktails. Wrapper /  Decorator  / Facade Observer aka subscriber/publisher (caveat) Delegation and Dependency Injection Model View Controller (very important if somewhat dated UI pattern) PyFlakes is a static Python checker KiCAD Conference is in Chicago on April 26-27, 2019 BangBangConWest 2019 is over but the videos will be up soon including the one Elecia noted about liking things (which was done by Lynn Cyrin). Embedded.fm Patreon

Valve's Alan Yates (@vk2zay) spoke with us about the science and technology of virtual reality.  Elecia looked at the iFixIt Teardown of the HTC Vive system as she was unwilling to take apart Christopher's system.  Alan shared some of his other favorite reverse engineering efforts: Doc OK’s Lighthouse videos, documentation on github by nairol, and a blog by Trammell Hudson. Alan's sensor circuit diagrams were on twitter: SparkleTree sensor circuit (think simplified) and the closer-to-production Lighthouse sensor. Make Magazine talked about Valve's R&D Lab. This is important in case you want to work at Valve (they are currently hiring for EE but if that doesn't describe you and you want to work there, apply anyway). Alan also has a website (vk2zay.net) though it doesn't see much updating right now.  

Patrick Yeon (@patyeon) spoke with us about nonprofit spaceships then asked our opinions about embedded software. Pat is working for something something nonprofit space something something. To fill in some of the blanks, apply for a job on NonprofitSpaceship.org. Pat was previously on episode 153: Space Nerf Gun when we talked about cost-optimized satellites. We talked about several books: Turn the Ship Around! A True Story of Turning Followers into Leaders by L. David Marquet Managers Path: Leaders Navigating Growth and Change by Camille Fournier Design Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides Head First Design Patterns: A Brain-Friendly Guide by Eric Freeman, Elisabeth Robson, Bert Bates, Kathy Sierra Elecia’s command code is on github.  

Matthew Liberty (@mliberty1) shared good advice for lowering power. We talk about different ways to measure current (Matt has a nice write-up) and things software can do to decrease power consumption. Sleeping is critical, of course, as is choosing your clock speed and setting the GPIOs to good states. Everything is fine until you start getting into the microamps, then your multimeter measurements may start to fail you. (EEvblog explains why in his uCurrent intro.) Eventually, you may want to measure nanoamp sleep states along with amp-consuming wake states. Matt’s Joulescope is a tool to do just that (Kickstarter goes live Feb 19, 2019!), automatically moving between 9 orders of magnitude of dynamic range and graphing the results on your computer. Matthew’s consulting company is JetPerch. We mentioned Colin O’Flynn’s ChipWhisperer which uses differential power analysis for security attacks. We also talked about Jacob Beningo’s post on protecting your tools. Elecia is giving away a chapter of her O’Reilly book, Making Embedded Systems. It is Chapter 10: Reducing Power Consumption. Hit the contact link if you want a copy.