278: Bricks' Batteries Last Forever (Repeat)
Embedded11 Feb 2022

278: Bricks' Batteries Last Forever (Repeat)

Matthew Liberty 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.

Find Matt on Twitter as @mliberty1.

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.

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Episoder(584)

537: Quiet Time Innovation

537: Quiet Time Innovation

Christopher and Elecia catch up on life, firmware consulting, daydreams, and projects.  Elecia thinks aloud about low-stimulation education toys. Christopher shares his experience using AI tools to bu...

29 Okt 1h 19min

536: I've Seen a Giraffe

536: I've Seen a Giraffe

David Such joins us to discuss his new book, Embedded AI: Intelligence at the Deep Edge. We explore the boundary between classical signal processing, heuristics, and edge machine learning; IMU process...

15 Okt 59min

535: The You in the Machine

535: The You in the Machine

Adam Smith from UC Santa Cruz joins us to discuss local Small Language Models (SLMs) and building open, autonomous tools. We explore his BayLeaf AI counterplatform, transagency (the "me-and-the-car" c...

1 Okt 1h 29min

534: I Think We'll Add a Head

534: I Think We'll Add a Head

Aaed Musa joins us to talk about building robot dogs, custom actuators, and his YouTube channel. He shares how he moved from 3D-printing servo robots in his parents' garage to designing capstan drives...

17 Sep 1h 13min

533: The Garage Is Open

533: The Garage Is Open

Author Susan Lammers joins the show to discuss the 40th anniversary edition of her classic book, Programmers at Work. We discuss what it was like to interview young and pioneering software developers ...

4 Sep 59min

532: It's Still Real Fire

532: It's Still Real Fire

Kevin Santo Cappuccio, founder of Architeuthis Flux, joins the show to discuss creating Jumperless, an open-source breadboard that replaces physical jumper wires with software-controlled analog crossb...

20 Aug 1h 9min

531: Sequestering the Mess

531: Sequestering the Mess

Elecia and Christopher celebrate winning the IEEE Educational Activities Board Meritorious Achievement Award in Outreach and Informal Education! A huge thank you to Mark Omo and the wonderful listener...

6 Aug 1h 7min

530: A Living Highlighter

530: A Living Highlighter

Marine biologist Dr. Steven Haddock joins the show to share the alien, glowing, and transparent wonders of the deep ocean. We discuss his beautiful new book, The Radiant Sea, and explore the complex e...

25 Jul 1h 8min

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