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We spoke with Michael Barr (@embeddedbarr) about the Barr Group embedded systems survey.

You can download the 2018 survey at the Barr Group survey page. The Barr Group Embedded C Coding Standard is also free to download (with registration). You can buy a paper copy on Amazon.

Programming Embedded Systems in C and C++ 1st Edition by Michael Barr, also available for free in HTML on the Barr Group site. The second edition is Programming Embedded Systems: With C and GNU Development Tools, 2nd Edition by Michael Barr and Anthony Massa.

The second book was Embedded Systems Dictionary by Jack Ganssle and Michael Barr

Elecia’s book is Making Embedded Systems: Design Patterns for Great Software.

As Donald Trump's EPA Administrator, Scott Pruitt is popular with conservatives for his aggressive rollback of Obama-era environmental regulations. He has also been strongly criticized for alleged ethics violations. But there's another side of Pruitt that's less well known. Pruitt is a Southern Baptist, and for years, his politics focused on faith-based issues like abortion and religious freedom. Pruitt has publicly said he doubts the science behind the theory of evolution. In this episode, we examine how Pruitt's faith informs his views on the environment, and how he handled a major pollution case in Oklahoma. Follow us on Twitter @NPREmbedded and @kellymcevers, and follow the reporters for this episode: @TomDreisbach and @JoeWertz. (Supreme Court audio in this episode comes from Oyez.)

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Christine Sunu (@christinesunu) spoke with us about the feelings we get from robots.

For more information about emotive design, check out Christine’s website: christinesunu.com. From there you can find hackpretty.com, some of her talks (including the TED talk with the Fur Worm), and links to her projects (such as Starfish Cat and a Cartoon Guide to the Internet of Things). You can find more of her writing and videos on BuzzFeed and The Verge. You can also hire her product development company Flash Bang.

Embedded 142: New and Improved Appendages is where Sarah Petkus offers to let her robot lick us.

Keepon Robot (or on Wikipedia)

Books we talked about:

Accelerando by Charles Stross

Alone Together: Why We Expect More from Technology and Less by Sherry Turkle (MIT site)

Reclaiming Conversation: The Power of Talk in a Digital Age by Sherry Turkle (MIT site)

Other Minds: The Octopus, the Sea, and the Deep Origins of Consciousness by Peter Godfrey-Smith (Note: Elecia also wrote a whole octopus annotated bibliography in a recent post)

Andrei Chichak and Alvaro Prieto (@alvaroprieto) join us to talk about bits and how to manipulate them.

Alvaro is host of the Unnamed Reverse Engineering podcast. His other Embedded appearances are 130, 200, and 215.

Andrei (“Andrei from the Great White North”) works at CBF Systems. His other Embedded appearances are 99, 114, 139, and 200.

Andrei wrote about bit manipulation as part of Embedded Wednesdays on Embedded.fm: Logic in C, part II. Andrei recommends using ISO646.h to reduce confusion around bit manipulation. Also, his suggested calculator is the SwissMicros DM16L

Elecia wrote an introduction to binary and hex.

For more information about programming and binary, see How to Count by Steven Frank

For advanced bit twiddling, check out:

Bit Twiddling Hacks website

Hacker's Delight book by Henry S. Warren Jr (1st Ed is also available)

Jasmine Brackett (@asiwatch) spoke with us about @Tindie’s electronics marketplace, this year’s Hackaday Prize, and tips for wearable electronics.

If you want to buy on Tindie, check out their homepage tindie.com. If you want to sell, that is straightforward too: tindie.com/about/sell.  

There is an Embedded contest for the Tindie Blinky LED badge, a nifty little learn to solder kit. Contest ends April 20, 2018 (midnight UTC). You are to send a number to us using the contact link. Closest one wins. One number per person.

You can also get these badges at the Dublin Hackaday Unconference (April 7, 2018, Dublin, Ireland) and at meetups where Jasmine is a presenter.

Thank you to Ben Hencke for some good questions. He talked about his Tindie store with us on 220: Cascading Waterfall of Lights.

Jasmine mentioned the RC2014, homebrew z80 computer kit.

Both Tindie and Hackaday are owned by Supplyframe.

Finally, we talked to Emile Petrone when Tindie was a fairly new thing on 72: This is My NASA Phone.

What do you do after space debris, hacking dinosaurs, and judging robots? If you are Dr. Lucy Rogers (@DrLucyRogers), you build an organization devoted to promoting the Making industry: Guild of Makers (@GuildOfMakers)

Lucy’s personal site is lucyrogers.com. She wrote the book It’s ONLY Rocket Science: An Introduction in Plain English.

Guild of Maker’s Twitter hack chats are weekly on Tuesdays at 8pm UTC. They use the tag #MakersHour.

Lucy programs in Node-RED, a visual language.

Dan Saks answers many questions about C++ in embedded systems: where it works, where it doesn't, and a path to getting started. 

Dan Saks is the founder and president of Saks & Associates. He was a columnist for The C/C++ Users Journal, Embedded Systems Design and several other publications. He also served as secretary of the ANSI and ISO C++ standards committee in its early years. 

We touched on some of his articles:

Poor reasons for rejecting C++

Preventing dynamic allocation

Calling constructors with placement new

Andrei suggested Sams Teach Yourself C++ in One Hour a Day, Seventh Edition by Siddhartha Rao as a good primer for experienced C programmers reluctantly learning C++.

NOTE: The contest already ended.

Chris and Elecia answered some listener questions about dynamic memory and shared code. Then Elecia gave a presentation about ShotSpotter, the gunshot location system she worked on.

Elecia enjoyed The Woman Who Smashed Codes: A True Story of Love, Spies, and the Unlikely Heroine Who Outwitted America's Enemies by Jason Fagone.

Ben is the editor of HackSpace, a new magazine about making (and hacking). It's produced by Raspberry Pi, but it's technologically agnostic. The first issue is free online.

The ShotSpotter presentation was originally given with Sarah Newman at the 2008 Grace Hopper Celebration of women in computing.

Jan Jongboom (@janjongboom) of Mbed (@ArmMbed) joined us to talk about compilers, online hardware simulators, and inference on embedded devices.

Find out more about Mbed on mbed.com. The board simulator is at labs.mbed.com (Mbed OS Simulator). The code for the simulator is on Jan’s Github. Mbed Labs also has the uTensor inference framework for using TensorFlow models on devices.

You can see some of Jan’s talks and his blog on janjongboom.com.

Jan will be running a workshop at SxSW called Changing the World with Open, Long-Range IoT on March 10 in Austin, TX. Additionally, he will be hosting an IoT Deep Dive Workshop on LoRA on March 14 (also in Austin, TX).

For background on LoRA, check out the recent Amp Hour episode with Richard Ginus.