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Announcement 1 Project14 | Last Chance to Submit Your Energy Harvesting Projects!

Raspberry Pi
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Hello, I am developing a lighting service for my home. I am using raspberry3 + 8 channel relay card + mqtt, everything works fine but I would like to add three way switches. My question is how to update the status of lights in mqtt if this is triggered by the switch?

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Hello,   I purchased a pi 3 about 2 months ago and I am running the magic mirror software on it.  It has been working great but was constantly getting very hot.  I was heading away for a few days so thought I would unplug it to let it cool down and have a bit of a break from running 24/7.   Now that I have returned and
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Hello   I am using psoc 4 pioneer kit I want to make it work with the gas sensor MQ4 and the data come from this sensor will be transmit via RF transmitter to an RF receiver  in another psoc 4. I need some help on doing this project.
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1.     Introduction For years always wanted to build something that harvests energy but I could never quite manage to actually start the projects off. I like the idea of recycling waste heat in air conditioning or waste water to extract old heat energy but have never had the confidence to re-plumb the house. I did once make a
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Now that you know the basics of how to use a power supply, wouldn't it be great to have one to use on your very own bench?  Well, you are so lucky because James has one to give away! James is always looking for novel ideas for how to use the equipment on his work bench. . . so in this contest, he's asking for ideas on the most unique use