278: Bricks' Batteries Last Forever
Embedded15 Feb 2019

278: Bricks' Batteries Last Forever

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.

Episoder(569)

490: Wait Until Physics Has Happened

490: Wait Until Physics Has Happened

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489: Constructive Cat

489: Constructive Cat

Chris and Elecia discuss her origami art show, ponder PRs for solo developers, attempt to explain GDB debugging, and make a to-do list for getting rid of Kanga. Elecia is having an Origami Octopus Ga...

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488: Two Slices of Complimentary Bread

488: Two Slices of Complimentary Bread

Adrienne Braganza Tacke spoke with us about her book Looks Good To Me: Constructive Code Reviews. It is about how to make code reviews more useful, effective, and congenial. Adrienne's book is availa...

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487: Focus on Fizzing

487: Focus on Fizzing

Chris and Elecia chat about simulated robots, portents in the sky, the futility of making plans, and grad school. A problem with mics led us to delay the show with Shimon Schoken from Nand2Tetris (co...

17 Okt 20241h 5min

486: A Nice Rainbow Dream

486: A Nice Rainbow Dream

Antoine van Gelder spoke to us about making digital musical instruments, USB, and FPGAs. Antoine works for Great Scott Gadgets, specifically on the Cynthion USB protocol analysis tool that can be use...

3 Okt 202454min

485: Conversation Is a Kind of Music

485: Conversation Is a Kind of Music

Alan Blackwell spoke with us about the lurking dangers of large language models, the magical nature of artificial intelligence, and the future of interacting with computers. Alan is the author of Mo...

20 Sep 20241h 17min

484: Collecting My Unhelpful Badge

484: Collecting My Unhelpful Badge

Chris and Elecia talk to each other about setting aside memory in a linker file, printing using your debugger, looking around a new code base, pointers as optimization, choosing processors, skill tree...

5 Sep 20241h 2min

483: An Ion of the Highest Fidelity

483: An Ion of the Highest Fidelity

Rick Altherr spoke with us about high-speed control, complicated systems, and making quantum computers. If you want to know more about building quantum computers, take a listen to Rick's MacroFab epis...

23 Aug 20241h 1min

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