Introduction: Scroll a Message on a LED Matrix
If you have a shop or an office or even your home and want to display a scrolling message to tell the happy hours, the weather or any information of your choice, here is the instructable!
It uses a TimeSquAir (http://TimeSquAir.io) a all in one Raspberry Pi bundled with a LED Matrix and a NFC tag, easily customizable with a graphical UI powered by IBM's Node-RED (http://Nore-RED.org).
We'll see how to scroll a fixed message first, then a internet fetched one (the Bitcoin value).
Here is the result (video):
Step 2: Access the Pi From Your Browser
Step 3: Build the LED Matrix Flow
Now you can use the provided nodes for the LEDMatrix bundled in TimeSquAir:
Step 4: Build the Message
You can link these elements (called "nodes") to build the message.
First use a LED Blank node to start. Then use a mix of LED Text and LED Picture nodes to compose the message. End with a LED Matrix node and use a Go node to activate the whole.
To display a simple text, a LED Text node is enough:
You can do more by mixing text and pictures:
Of course, some value may not be known at this time, thus should be calculated at runtime.
Step 7: Using Calculated Values
Step 9: Learn More !
and discover the other Instructables:
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Please be positive and constructive.