Is there a scrolling LED script out there that allows me to change only part of the text via Bluetooth or WiFi.
I'm using Arduino UNO and Max7219 8x8 with BT module.
Thank you
Can you explain what you are trying to achieve? The part
change only part of the text via Bluetooth or WiFi
does not really make sense without some sort of context, as changing the whole message or a part of it is up to the sending side if we are talking about sending the message through the BT interface.
I would like to have two sets of text scroll back to back on the display, which I do have working now.
I would like one to be permanently embedded with the code and the only way to change it is to upload the code again with the new text. The second set of text I would like to be able to change via bluetooth without affecting the first set.
Example: Scrolling text is 'This is a test with permanent text' pause then scroll 'This is a test with Bluetooth text'.
When I send new text via bluetooth, it replaces the whole thing.
Thank you
So if you already have a part that does not change, then only use the new part in the scrolling section. I assume you have the code for that. I don't have much advice except that you are writing the code so should be in control of what goes where. Without seeing/studying your code it is hard to comment.
You may want to look at the Parola libraries and the Zones feature. Zones are consecutive modules that are defined as an independent display. This could simplify what you are trying to do. The libraries are linked from my signature block below.