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(569)

506: How Do I Fit a Whale Into an Apartment Building?

506: How Do I Fit a Whale Into an Apartment Building?

Dmitry Grinberg joined us to talk about running Linux on small microprocessors (physically small and/or 4-bit). Dmitry does this by emulating a MIPS processor. Boot times vary between minutes and days...

25 Heinä 20251h 2min

505: Potato in a Number Field

505: Potato in a Number Field

We spoke with Peter Griffin about Jumperless Breadboards, no-install GUI development, Excel, and puppies. Jumperless Breadboard at CrowdSupply Colab GUI for Jumperless Breadboard Website GUI for ...

10 Heinä 20251h 18min

504: The Robot Was Expecting It

504: The Robot Was Expecting It

It's another episode with Elecia and Chris. This week they discuss people that have influenced their lives and careers, thinking about past career choices and regrets therein, identities, the Embedded...

27 Kesä 20251h 6min

503: The Tiniest Laptops

503: The Tiniest Laptops

Emily Lovell spoke with us about teaching how to contribute to open source, including her own experience creating the LilyTiny as a Master's student and researching the impact as a PhD student. The L...

13 Kesä 20251h 3min

502: Chat, J'ai Peté!

502: Chat, J'ai Peté!

Chris and Elecia talk about Murderbot, LLMs (AI), bikes, control algorithms, and fancy math. The website with the ecology jobs is wildlabs.net from 501: inside the Armpit of Giraffe with Meredith Pa...

3 Kesä 20251h 8min

501: Inside the Armpit of a Giraffe

501: Inside the Armpit of a Giraffe

We spoke with ecologist Dr. Meredith Palmer and embedded engineer Akiba about lions, terror, and technology. Akiba works for FreakLabs.org on global conservation projects. We talked about their Boomb...

15 Touko 20251h 20min

500: Nerding Out About the Ducks

500: Nerding Out About the Ducks

Komathi Sundaram spoke with us about her enthusiasm for tests and test automation. We talked about the different joys of testing vs. development, setting up CI servers, and different kinds of tests in...

2 Touko 20251h 7min

499: This Is Your Problem

499: This Is Your Problem

We spoke with Janet Hansen about the world of professional costumery (with electronics) and becoming an artist. Janet's business is Enlighted where you can find custom illuminated clothing as well as ...

17 Huhti 202550min

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