Re: smart home Arduino project with MIT app inventor

[Abraham Getzler]

You need a way to mark your sensor reading messages to identify them as either temperature or humidity, so the receiving blocks will know where to show them.

For example, println("T=",t);

println("H=",h);

and when you receive on the AI2 side,

If connected then

   if bytes available > 0 then

     set m = incoming message

     if the front of the message is "T=", copy the rest to the temp label

     if the front of the message is "H=", copy the rest to the humiditylabel

See the text blocks for length(), split at, segment.

ABG

[Abraham Getzler]

You are probably receiving both T and H in the same message m.

Try setting your BT Client Delimiter Byte to 10 in the Designer,

and set the BTClient.ReceiveText Number of Bytes to Receive to -1.

This will get you only one reading per message because it will

split them at the Line Feed.

ABG

[Abraham Getzler]

AI2 has no wait() block,

but you can use a Clock from the Sensors drawer and set it as a timer.

ABG

[Taifun]

see Scott's "Please Wait" method here https://groups.google.com/d/msg/mitappinventortest/PhX0rRpvH-Q/fcUacQziCwAJ

Taifun

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Trying to push the limits of App Inventor! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.