278: Bricks' Batteries Last Forever (Repeat)
Embedded11 Helmi 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.

Jaksot(567)

480: Surprises Early In The Game

480: Surprises Early In The Game

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...

27 Kesä 20241h 1min

479: Make Your Voice Heard

479: Make Your Voice Heard

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 bl...

13 Kesä 20241h 5min

478: The Map Is Not the Territory

478: The Map Is Not the Territory

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 d...

30 Touko 202455min

477: One Thousand New Instructions

477: One Thousand New Instructions

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 t...

16 Touko 20241h 24min

476: Sidetracked by Mining the Moon

476: Sidetracked by Mining the Moon

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 ...

1 Touko 202456min

475: Stuffed Animal or Colleague

475: Stuffed Animal or Colleague

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 ...

19 Huhti 20241h 9min

474: It's All Chaos and Horror

474: It's All Chaos and Horror

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-...

5 Huhti 20241h 11min

473: Math Is Not the Answer

473: Math Is Not the Answer

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 i...

21 Maalis 20241h 10min

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