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(569)

450: Swimming Through Nutritious Slurry

450: Swimming Through Nutritious Slurry

Kari Love joined us to talk about soft robotics, robots in religion, and squishiness. Kari co-authored Soft Robotics: A DIY Introduction to Squishy, Stretchy, and Flexible Robots. Her website is kari...

25 Touko 20231h 6min

449: Soldering the Ukulele

449: Soldering the Ukulele

Chris and Elecia talk about internetting your thing, motivating yourself with cheese, a pile of scrabble letters, an electric ouija board, and a supervillain origin story. Elecia will be on a Memfault...

11 Touko 20231h 1min

448: Little Squiggles All Around

448: Little Squiggles All Around

Carl Bugeja makes actuators out of PCBs, puts them to work flapping origami bird wings (or moving robot rovers), and takes videos of the whole process. Oh, and get this, self-soldering circuits. Firs...

27 Huhti 20231h 1min

447: All Sorts of Weird Problems

447: All Sorts of Weird Problems

We spoke with Chris Gammell about IoT, podcasting, relaxing, and learning. Chris works at Golioth.io. They have a neat blog that talks about reference designs, Zephyr RTOS, and making products. We tal...

13 Huhti 20231h 5min

446: World's Best PB&J

446: World's Best PB&J

Chris and Elecia talk about ChatGPT, conferences, online compilers, and Ardupilot. Compiler Explorer: godbolt.org (and function pointer example) Jupyter Notebooks with colab: colab.research.google.com...

30 Maalis 202354min

445: I Do Not Like Blinking

445: I Do Not Like Blinking

We spoke with Charlyn Gonda about making things glow, dealing with imposter syndrome, and using origami. Charlyn's website is charlyn.codes, the projects we talked about are documented there. You can ...

16 Maalis 20231h 11min

444: It Is If You Do It Wrong

444: It Is If You Do It Wrong

Peter Griffin spoke with us about operant boxes, juggling many projects, getting into embedded systems, and bottle rockets. When we talked about 3D printing, Peter mentioned the Maker Muse Clearance...

3 Maalis 202357min

443: Vexing Machines

443: Vexing Machines

Chris and Elecia talk about photons, comets, patterns, other flying objects, and cameras. Chris uses PixInsight for processing and has an Ioptron Sky Tracker. Apologies to our southern hemisphere lis...

17 Helmi 20231h

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