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Documents Going Beyond Periodic Wakes: Using WiFi to Revive a Sleeping Device -- Episode 584
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  • Author Author: tariq.ahmad
  • Date Created: 4 Jan 2023 2:42 PM Date Created
  • Last Updated Last Updated: 6 Jan 2023 8:24 AM
  • Views 82331 views
  • Likes 8 likes
  • Comments 17 comments

Going Beyond Periodic Wakes: Using WiFi to Revive a Sleeping Device -- Episode 584

What if we could just wake up a sleeping device with a simple WiFi message? Clem thinks there should be an open source variant of everything so nobody is locked in by a vendor cloud service or anything else. And one of the things he´d like to develop is an open source security system. Recently Clem learned about the Renesas DA16200MOD WiFi module, and supposedly it can stay connected to the WiFi network even in deepsleep. So the natural question to ask is, can we also wake it up with a simple UDP message over WiFi instead of having to periodically wake it up like people usually do? The journey to success is troublesome, involved PCB operations under the microscope and a lot of sketchy arduino code...

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Bill of Material:

Product Name Manufacturer Quantity Buy Kit
DA16200MOD Renesas/Dialog 1 Buy Now
DA16200MOD-DEVKIT Renesas/Dialog 1 Buy Now
MOLEX USB Connector, USB Type C, USB 3.1, Receptacle, 24 Ways, Surface Mount, Right Angle Molex 1 Buy Now
MULTICOMP Battery Retainer Clip, 2450, 24mm, SMT Multicomp pro 2 Buy Now
 

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Top Comments

  • baldengineer
    baldengineer over 2 years ago +1
    I like the "Ye Olde PCB Grill." This DA16200MOD module is an interesting paradigm shift! I am curious to measure your board with a Power Profiler Kit to see how the current consumption differs during…
  • kmikemoo
    kmikemoo over 2 years ago +1
    Very cool. I can understand why you are excited. Apply it in an adaptive system based on an occupancy sensor or use it in a mobile sensor that isn't always "on duty"... Again, very cool.
  • scottiebabe
    scottiebabe over 2 years ago +1
    Your excitement is contagious! Congrats on a great project, I think there might be some wifi DTIM stuff happening behind the scenes
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  • dougw
    dougw over 2 years ago

    Cool idea.
    35 mA seems like a lot of power, but I guess it isn't really asleep.

    The Pi Pico W running a web server consumes about 40 mA when running but not transmitting, according to one measurement.

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  • dougw
    dougw over 2 years ago

    Cool idea.
    35 mA seems like a lot of power, but I guess it isn't really asleep.

    The Pi Pico W running a web server consumes about 40 mA when running but not transmitting, according to one measurement.

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  • mayermakes
    mayermakes over 2 years ago in reply to dougw

    its 35mA running normally, according to datashett it takes 3,5uA during sleep 3 (stays conencted to wifi) and as little as 0,2uA when in total deep sleep.
    the wording was a bit confusing on my part.

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  • dougw
    dougw over 2 years ago in reply to mayermakes

    That is much more impressive.

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  • mayermakes
    mayermakes over 2 years ago in reply to dougw

    even if it would take more current in Sleep than any other module, the fact that it wakes up on command over network sets it apart, hence why I wanted to give this a go to see if it really works.

    I may put some more work into this to see if i can get it to do it via other protocolls than UDP,

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