278: Bricks' Batteries Last Forever
Embedded15 Helmi 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.

Jaksot(567)

472: Field of Boxes

472: Field of Boxes

Making Embedded Systems, 2nd Edition came out today! Chris and Elecia talk about the changes, the writing, but not the eldritch horror. Then we talk about pianos and origami. The electronic version i...

7 Maalis 20241h 2min

471: Bicycle Built For Two

471: Bicycle Built For Two

Where electronics meets music, there is a board called Daisy. Created by ElectroSmith, Andrew Ikenberry, the goal of the board is to teach computers to sing. Andrew joined us to talk about music, audi...

22 Helmi 202458min

470: Upping the Chaos Level

470: Upping the Chaos Level

Helen Leigh joined us to talk about putting together conferences (including Teardown 2024), indie hardware producers (including via Crowd Supply), and building communities. Teardown will be June 21-23...

9 Helmi 20241h 16min

469: Saving the World Is Not a Hobby

469: Saving the World Is Not a Hobby

Chris and Elecia chat with each other about motor encoder reading methods, conferences coming up, soldering irons, schematic reviews, looking for a new job, and general life. Some conferences coming ...

28 Tammi 20241h 4min

468: Designed to Kill All Humans

468: Designed to Kill All Humans

Anders Nielsen joined us to talk about why the 6502 is the best processor. Anders also sells 65uino kits on his store: imania.dk. For more explanation of what they are, how they work, attaching perip...

12 Tammi 202456min

467: Temporary Axolotl

467: Temporary Axolotl

Chris and Elecia talk about cars, fleeting moments of fame, their year, and the sorry state of tools in the embedded space. Chris became internet famous for asking a car dealership's chatbot (powered ...

29 Joulu 202352min

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

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

Ralph Hempel spoke with us about the development of Lego Mindstorms from hacking the initial interface to running Debian Linux as well as programming Mindstorms in Python. Happy 25th birthday to Lego ...

14 Joulu 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 Joulu 20231h 5min

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