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(568)

8: Studebaker Love Story

8: Studebaker Love Story

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7: Lights, Camera, Electrons

7: Lights, Camera, Electrons

Josh Chan and Tarun Pondicherry, founders of Light Up, join Elecia White to talk about how to teach electronics to elementary and middle school students. The Light Up Kickstarter ends on June 30, 2013...

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6: Do Robot Squirrels Dream of Electric Imps...

6: Do Robot Squirrels Dream of Electric Imps...

Matt Haines (@BeardedInventor) of Electric Imp joins Elecia White to discuss how to connect cats (and other things) to the Internet. Buy an Imp on Adafruit but don't forget the adapter (aka April boar...

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5: Passion Is Contagious

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Akkana Peck (@akkakk) joins Elecia White to talk about an introduction to Arduino workshop for high school students. Arduino boards are a fantastic way to encourage people into embedded systems. The b...

13 Jun 20131h

4: Are We Not Lawyers?

4: Are We Not Lawyers?

Elecia and Chris (@stoneymonster) discuss why they chose to go into consulting and what they've learned while building Logical Elegance into the company it is. SCORE is a great resource for small busi...

6 Jun 20131h 13min

3: Plenty of Candy, No Guns

3: Plenty of Candy, No Guns

Elecia White and Phil King of Weekend Engineering talk about things a hardware engineer wants software engineers to know. Drifting a bit from topic to topic, they touch on interviewing, oscilloscopes,...

29 Mai 201345min

2: My Little Pony Stopped Outputting

2: My Little Pony Stopped Outputting

Elecia (@logicalelegance) and Jen (@r0b0ts0nf1r3) compare multimeters then install the Saleae Logic to debug a problem. Elecia pines for a nifty oscilloscope. Some products discussed on the show: Sal...

23 Mai 201346min

1: Start Tinkering

1: Start Tinkering

Featuring Elecia "El" White (@logicalelegance), Jen Costillo (@rebelbot @r0b0ts0nf1r3), and Star Simpson (@starsandrobots). This show was recorded at DesignWest, the embedded systems conference. Boar...

16 Mai 201346min

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