Implement new functions in the Arduino Plug and Make Kit Eco Watch project

Hardware Plug and Make Kit
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How can you power the Eco Watch project with a solar panel and have notifications sent to your phone when the set temperature changes?
Thank you

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what's the the Eco Watch project ? link ?

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https://courses.arduino.cc/plugandmake/it/

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Here's a link to the Eco Watch project:
https://courses.arduino.cc/plugandmake/lessons/project-eco-watch/

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