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Embedded

Logical Elegance

I am Elecia White alongside Christopher White. We"re here to chat about the interests, careers, and lives of engineers, artists, educators and makers. Our diverse guest list includes names you may have heard and engineers working quietly in the trenches. Either way, they are knowledgeable, enthusiastic, and inspiring. We"d love to share our enthusiasm for science, technology, engineering, art, and math (STEAM).

technology

All Episodes

01:05:09

482: Reference the Same Dog Object

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2024/08/08

Professor Colleen Lewis joined us to talk teaching pointers with stuffies, explaining inheritance through tigers, and computer science pedagogy. Check out her YouTube channel to view her videos explaining CS concepts with physical models. These are also collected on her website: Physical Models of Java. If you are an instructor (or thinking about teaching CS), check out Colleen’s CS Teaching Tips. You may also be interested in some other research: John Edwards Study on Syntax exercises in CS1

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01:02:13

481: The Girl from Evel Knievel

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2024/07/25

Chris and Elecia talk about their current adventures in conference talks, play dates, and skunks. Elecia’s talks are available on YouTube: Creating Chaos and Hard Faults: An introduction to hard fault handlings, stack overflows, and debugging hard bugs Introduction to Embedded Systems (O'Reilly Expert Webinar): An introductions to… well, embedded systems These are both advertising for the 2nd edition of Elecia’s book, Making Embedded Systems: Design Patterns for Great Software. You can also

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01:01:12

480: Surprises Early In The Game

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2024/06/27

Jerry Twomey spoke with us about his new O’Reilly book Applied Embedded Electronics which covers embedded topics such as EMI, signal processing, control systems and non-ideal components. Jerry is also the principal engineer at Effective Electrons. His articles are linked from there and you can contact him via the site. Here is a 30-day trial for the O’Reilly Learning System. You can take a look at Jerry’s Applied Embedded Electronics and Elecia’s Making Embedded Systems as well as hundreds of other

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01:05:09

479: Make Your Voice Heard

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2024/06/13

Carles Cufí spoke with us about Zephyr, Nordic, learning, open source development, and corporate goals. Carles had some great suggestions for learning Zephyr: Memfault Interrupt Practical Zephyr blog series Nordic’s Developer Academy Zephyr’s Discord server Zephyr’s YouTube channel (@ZephyrProject), sorted by views Macrobatics term is from Zephyr Devicetree Mysteries, Solved - Marti Bolivar, Nordic Semiconductor There is also the Zephyr website for a full picture. And various

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55:01

478: The Map Is Not the Territory

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2024/05/30

Jan Rychter joined us to talk about building a company, electronic components, and software design. Jan is the founder and engineer at PartsBox.com. If you are interested in the meta-analysis of the data, check out his article on the Top Ten Hobby Parts and the Electronic Component Database, You can find out more about Jan through his website (jan.rychter.com), LinkedIn, or Mastodon. Transcript

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01:24:04

477: One Thousand New Instructions

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2024/05/16

Kwabena Agyeman joined Chris and Elecia to talk about optimization, cameras, machine learning, and vision systems. Kwabena is the head of OpenMV (openmv.io), an open source and open hardware system that runs machine learning algorithms on vision data. It uses MicroPython as a development environment so getting started is easy. Their github repositories are under github.com/openmv. You can find some of the SIMD details we talked about on the show: 150% faster: openmv/src/omv/imlib/binary.c

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56:29

476: Sidetracked by Mining the Moon

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2024/05/01

Lee Wilkins joined Chris and Elecia to talk about The Open Source Hardware Association, the Open Hardware Summit, and zine culture. The Open Source Hardware Association (OSHWA) provides certification and support for creating open source hardware. The Open Hardware Summit is happening May 3-4, 2024. It is in Montreal, Canada. It also has many online components including a Discord and online Unconferece. All videos are available for later watching on YouTube. Lee’s personal page is leecyb.org. Their

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01:09:37

475: Stuffed Animal or Colleague

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2024/04/19

Chris and Elecia talk about the Embedded Online Conference, their experience learning Zephyr, and some listener questions. Elecia will be presenting on Creating Chaos and Hard Faults at the Embedded Online Conference, Apr 29 - May 3, 2024. Some other talks that look interesting: The Power of a Look-up Table by Nathan Jones Zephyr Tools To Debug Hardware by Chris Gammell Breaking Good: Why Virtual Hardware Prefers Rough Handling by Uri Shaked Beyond Coding: Toward Software Development

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01:11:52

474: It's All Chaos and Horror

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2024/04/05

Logic gates and origami? Professor Inna Zakharevich joined us to talk about Turing complete origami crease patterns. We started talking about Turing completeness which led to a Conway’s Game of Life-like 2D cellular automaton called Rule 110 (Wikipedia) which can be implemented with logic gates (AND, OR, NOT). These logic gates can be implemented as creases in paper (with the direction of the crease indicating 0 or 1). The paper describing the proof is called Flat Origami is Turing Complete

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01:10:13

473: Math Is Not the Answer

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2024/03/21

Philip Koopman joined us to talk about how modulo 255 vs 256 makes a huge difference in checksum error detection, how to get the most out of your checksum or CRC, and why understanding how they work is worth the effort. Philip has recently published Understanding Checksums and Cyclic Redundancy Checks. He’s better known for Better Embedded System Software as well as his two books about safety and autonomous vehicles: The UL 4600 Guidebook: What to Include in an Autonomous Vehicle Safety

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01:02:01

472: Field of Boxes

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2024/03/07

Making Embedded Systems, 2nd Edition came out today! Chris and Elecia talk about the changes, the writing, but not the eldritch horror. Then we talk about pianos and origami. The electronic version is available now on Amazon, ebooks.com, Google Play and where you get your ebooks. The paper copy will be out in about two weeks, you can preorder now. It is also available on the O’Reilly Learning System, here is a 30-day Trial. See the Embedded.fm Origami and Flex PCBs newsletter, sign up for

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58:30

471: Bicycle Built For Two

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2024/02/22

Where electronics meets music, there is a board called Daisy. Created by ElectroSmith, Andrew Ikenberry, the goal of the board is to teach computers to sing. Andrew joined us to talk about music, audio processing, instruments, product design, and electronic manufacturing. See the Electrosmith website, specifically the Daisy Seed. The electro-smith github repository is extensive (with many Daisy Examples). Also see their YouTube channel. Electrosmith is offering 5% off until mid-March for folks with

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01:16:19

470: Upping the Chaos Level

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2024/02/09

Helen Leigh joined us to talk about putting together conferences (including Teardown 2024), indie hardware producers (including via Crowd Supply), and building communities. Teardown will be June 21-23 in Portland, OR, USA. More information about attending or presenting. Early bird tickets are available for a limited time! Teardown is put on by Crowd Supply, a company that helps hardware companies launch products. Hardware Happy Hour Portland is a regular meetup that Helen organizes. Helen will be

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01:04:25

469: Saving the World Is Not a Hobby

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2024/01/28

Chris and Elecia chat with each other about motor encoder reading methods, conferences coming up, soldering irons, schematic reviews, looking for a new job, and general life. Some conferences coming up in the embedded space: Embedded Online, April 29-May 4, virtual (Elecia will be speaking) Open Hardware Summit in May 3-4, Montreal, Canada Embedded World in April 9-11 in Nuremburg, Germany Evil Mad Scientist Laboratories was purchased by Bantam Tools! Starter soldering irons? It seemed like

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56:50

468: Designed to Kill All Humans

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2024/01/12

Anders Nielsen joined us to talk about why the 6502 is the best processor. Anders also sells 65uino kits on his store: imania.dk. For more explanation of what they are, how they work, attaching peripherals, and programming in assembly, look at Anders’ YouTube channel @AndersNielsenAA, read his blog on abnielsen.com, or read about it on its Hackaday.io project page.** We also mentioned Ben Eater’s 6502 Kit, Adrian's Digital Basement - YouTube, and Rodnay Zaks’ Programming the 6502. ** Anders was a

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52:31

467: Temporary Axolotl

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2023/12/29

Chris and Elecia talk about cars, fleeting moments of fame, their year, and the sorry state of tools in the embedded space. Chris became internet famous for asking a car dealership’s chatbot (powered by ChatGPT) to generate Python code for fluid dynamics problems. After this, someone else asked the chatbot to sell a car for $1. Pass the Bricks is an organization that takes Lego bricks and turns them into sets for kids who don’t have any. Speaking of re-use, contact the show if you’d like to get in

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01:08:19

466: Attacked by a Goose on the Way to the Office

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2023/12/14

Ralph Hempel spoke with us about the development of Lego Mindstorms from hacking the initial interface to running Debian Linux as well as programming Mindstorms in Python. Happy 25th birthday to Lego Mindstorms! Pybricks is a MicroPython based coding environment that works across all Lego PoweredUp hubs and on the latest Mindstorms elements. The creators are David Lechner and Laurens Valk. Ralph was the first person to boot a full Debian Linux distro on the brick, see EV3Dev, a Debian Linux for Lego

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01:05:18

465: Dinosaurs, Pirates, Spaceships

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2023/12/01

Yanina Bellini Saibene joined us to discuss teaching, localization, barriers to learning coding, and global communities. Yani works on Teach Tech Together (https://teachtogether.tech/) with Greg Wilson. It is a fantastic resource if you are learning to teach. It is available in English and Spanish. She also works on The Carpentries which teaches coding and data science skills to researchers worldwide. Yani has a site (yabellini.netlify.app) that includes the courses she has online (for free). She

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59:00

464: Please Make This Monster Look Scary

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2023/11/16

Chris and Elecia talk about their favorite processors, their breakfast preferences, large language model ethics, presents, and Eeyore's birthday. Elecia’s new edition of her book Making Embedded Systems is finished! (Except for a couple months of tech reviews, updating, copyediting, and drawings.) It will be out in March. All of the back issues of Byte Magazine Chris’ radio kit that he mentioned but didn’t name is the QRP Labs QCX+ 5W CW Transceiver. Transcript Nordic

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56:22

463: Layers of Band-Aids

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2023/11/02

Kevin Lannen is an embedded systems engineer making powered wheelchairs safer. This sounded interesting to us. Kevin works at LUCI Mobility (luci.com). Check out their tear jerker introduction video as well as technical description of over-the-air update concerns on smart wheelchairs. We also talked about the app that goes with the system: LUCI View. You can find Kevin on Twitter (@kevlan) and LinkedIn. Go Baby Go - The Adaptive Sports Connection Transcript Memfault is making software the most

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