resources of sensors

how to choose an app according to sensors

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Can you give more detail? Which sensors are you talking about and where do you want to choose the app from?

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sensors that check about weather changes. what do you mean where to choose the app from?

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You asked yourself how to choose an app, therefore my question what kind of app you want to choose!
These weather sensors, are they attached to an Arduino board, or what do they look like?

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yeah.attached to an Arduino board
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Here are some turorials about how to interact with an Arduino board:

http://www.martyncurrey.com/turning-a-led-on-and-off-with-an-arduino-a-hc-06-and-android/

http://www.martyncurrey.com/turning-a-led-on-and-off-with-an-arduino-bluetooth-and-android-part-ii-2-way-control/

http://www.martyncurrey.com/turning-a-led-on-and-off-with-an-arduino-bluetooth-and-android-part-iii-3-leds-and-3-switches/

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