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.

Avsnitt(569)

498: To Consume Stickers

498: To Consume Stickers

At the end of this week's show, Elecia reads a Winnie the Pooh poem as Cookie Monster death metal. Before that, Chris and Elecia chat about mental health, journaling, personal projects, and listener q...

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497: Everyone Likes Tiny

497: Everyone Likes Tiny

OpenMV has a new Kickstarter so CEO Kwabena Agyeman chatted with us about more powerful (and smaller!) programmable cameras. See OpenMV's site for their existing cameras. See their (already funded!)...

20 Mars 20251h 24min

496: Beauty, Elegance, Consistency

496: Beauty, Elegance, Consistency

Professor Shimon Schocken spoke with us about teaching computer science from NAND logic gates to arithmetic units, micro assembly, virtual machines, compilers, operating systems, and the Tetris games....

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495: Shortcut the Difficulties of Reality

495: Shortcut the Difficulties of Reality

Professor Cindy Harnett spoke to us about new and different sensors and actuators, primarily designed for soft robotics and fabricated with relatively low cost materials. Cindy is a professor of elect...

21 Feb 20251h 1min

494: All Tech Is Wearable

494: All Tech Is Wearable

Debra Ansell joined us to talk about finding friends and exchanging neat gifts, accidentally tricking people into making unmanufacutable boards, and happy, blinking lights. Debra is usually known by t...

7 Feb 20251h 15min

493: Put the Peeps in the Chili Pot

493: Put the Peeps in the Chili Pot

Elecia and Chris talk with each other about the state of Chris' mind, what makes an embedded developer stand out, "LEGO block" based design, unit tests, and astronomy. Whew! Elecia was recently on the...

24 Jan 20251h 20min

492: Octopus Army

492: Octopus Army

Nathan Jones chatted with us about his proposal for a computer architecture book based on a 4-bit computer. Nathan found the 4-bit computer in the Hackaday SuperCon 2022 badge and was amazed by some...

27 Dec 20241h 9min

491: Oscillators Oscillating Other Oscillators

491: Oscillators Oscillating Other Oscillators

Chris and Elecia spoke with Kirk Pearson about running audio-electronic-art workshops, interesting sounds, and their book Make: Electronic Music from Scratch: A Beginner's Guide to Homegrown Audio Gi...

13 Dec 20241h 6min

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