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 books about software, hardware, engineering, and origami.  Transcript ..read more

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 Nordic tutorials (see nRF5340 Audio applications).  Carles was an author on Getting Starte ..read more

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 ..read more

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 1000% faster: openmv/src/omv/imlib/filter.c Double Pumping: openmv/src/omv/modules/py_tv ..read more

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 zines are available in their shop.  Transcript ..read more

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 Expertise by Marian Petre Use the EMBEDDEDFM coupon for a discount (or if your whole team is going, check out t ..read more

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 (arxiv and PDF). Quanta Magazine has a summary article: How to Build an Origami Computer. In ..read more

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 Case How Safe Is Safe Enough?: Measuring and Predicting Autonomous Vehicle Safety Phil’s YouTube page h ..read more

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 future newsletters here.  ..read more

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 the coupon code mentioned in the show. We mentioned a number of synths but the CHOMPI is p ..read more