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.

Episoder(569)

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

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

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14 Des 20231h 8min

465: Dinosaurs, Pirates, Spaceships

465: Dinosaurs, Pirates, Spaceships

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 Wils...

1 Des 20231h 5min

464: Please Make This Monster Look Scary

464: Please Make This Monster Look Scary

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 Sys...

16 Nov 202359min

463: Layers of Band-Aids

463: Layers of Band-Aids

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 a...

2 Nov 202356min

462: Spontaneously High Performing

462: Spontaneously High Performing

Marian Petre spoke to us about her research on how to make software developers better at developing software. Marian is an Emeritus Professor of the School of Computing & Communications at the Open Un...

19 Okt 20231h 15min

461: Am I the Cow in This Scenario?

461: Am I the Cow in This Scenario?

Chris and Elecia discuss the pros and cons of completing one project or starting a dozen. Elecia's 2nd edition of Making Embedded Systems is coming out in March. (Preview is on O'Reilly's Learning S...

5 Okt 202358min

460: I Don't Care What Your Math Says

460: I Don't Care What Your Math Says

Author, engineer, manager, and professor, Dr. Greg Wilson joined Elecia to talk about teaching, science in computer science, ethics, and policy. The request for curriculum that started the conversatio...

28 Sep 20231h 19min

459: Ideas Have to Come From Somewhere

459: Ideas Have to Come From Somewhere

Professor AnnMarie Thomas spoke with us about playful learning through joy, whimsy, surprise, and meeting new people. We also spoke with AnnMarie about how adults can foster an environment that enco...

14 Sep 20231h 17min

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