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(571)

11: Tell Me I'm Wrong, It's Fine

11: Tell Me I'm Wrong, It's Fine

Karen Lightman (‏@khlightman) joins Elecia White to talk about the infinite awesomeness of tiny MEMS devices. Recorded at the (somewhat noisy but lovely and delicious) Blue Brasserie during SEMICON We...

25 Heinä 20131h 1min

10: Hands Off, Baby

10: Hands Off, Baby

Jen Costillo (@r0b0ts0nf1r3) joins Elecia White to discuss the secret parts of C, keywords that only embedded software engineers seem to know about. They talk about interviewing and why these keywords...

17 Heinä 201358min

9: Kidnapped and Blindfolded

9: Kidnapped and Blindfolded

Randi Eckstein grilled Elecia White (@logicalelegance) on inertial sensors: when to use accelerometers vs. gyroscopes; gyroscopes vs. rate sensors; how to make an inertial measurement unit; the basics...

9 Heinä 20131h 3min

8: Studebaker Love Story

8: Studebaker Love Story

Elecia White is on vacation. Please enjoy some music from the Ballistic Cats!

3 Heinä 201341min

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...

26 Kesä 20131h 6min

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...

20 Kesä 201348min

5: Passion Is Contagious

5: Passion Is Contagious

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 Kesä 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 Kesä 20131h 13min

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