Loop "for" and pictures

Hi, i have a problem with loop "for". I did reference to value "text" but it not working.
I think i have to do reference to other value than "text" but i don't know which one.
In my project are pictures which must change at certain times. Thanks for help.


You need to work on your logic:

if     label3 <= 200          show image1
elseif label3 >200 and <=400  show image2
elseif label3 >400 and <=600  show image3
elseif label3 >600 and <=800  show image4
elseif label3 >800 and <=1000 show image5

I do this but still now working

You need to add your if blocks to the clock timer event, after you set the value for label3, but before you set global input to "blank".

Be sure to use println() at the end of each message to send from the sending device, to signal end of message.

Only use print() in the middle of a message.

Be sure not to println() in the middle of a message, or you will break it into two short messages and mess up the item count after you split the message in AI2.

Do not rely on timing for this, which is unreliable.

In the AI2 Designer, set the Delimiter attribute of the BlueTooth Client component to 10 to recognize the End of Line character.
Also, return data is not immediately available after sending a request,
you have to start a Clock Timer repeating and watch for its arrival in the Clock Timer event. The repeat rate of the Clock Timer should be faster than the transmission rate in the sending device, to not flood the AI2 buffers.

In your Clock Timer, you should check

  Is the BlueTooth Client still Connected?
  Is Bytes Available > 0?
     IF Bytes Available > 0 THEN
       set message var  to BT.ReceiveText(-1) 

This takes advantage of a special case in the ReceiveText block:

Receive text from the connected Bluetooth device. If numberOfBytes is less than 0, read until a delimiter byte value is received.

If you are sending multiple data values per message separated by | or comma, have your message split into a local or global variable for inspection before trying to select list items from it. Test if (length of list(split list result) >= expected list length) before doing any select list item operations, to avoid taking a long walk on a short pier. This bulletproofing is necessary in case your sending device sneaks in some commentary messages with the data values.

Some people send temperature and humidity in separate messages with distinctive prefixes like "t:" (for temperature) and "h:" (for humidity).
(That's YAML format.)

The AI2 Charts component can recognize these and graph them. See Bluetooth Client Polling Rate - #12 by ABG

To receive YAML format messages, test if the incoming message contains ':' . If true, split it at ':' into a list variable, and find the prefix in item 1 and the value in item 2.


Also, please show the sketch that is transmitting these numbers so that we can check data types.

This is my arduino project, it is not finished but i don't have a problem whith this. Everything has been checked and is OK.

I don't really know how to do it :face_with_diagonal_mouth:

Oh, thanks. I thought so. Firstly i think that i need new function clock. Now everything works. Thanks for help.