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Arduino code to scroll messages on either a MAX7219-type LED display or an "RDU-350" that Ray found.

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Scrolling-Displays

Arduino code to scroll messages on either a MAX7219-type LED display or an "RDU-350" that Ray found. The RDU-350 can only scroll its 20 character buffer. This code uses an arbitrarily long buffer with 19 spaces at the front, a message, and 19 spaces at the end. We repeatedly print a 20 char window from that buffer, animating a scrolling appearance. The Arduino I set up to drive the display uses an ADM483 5V TTL-RS485 driver. The data direction is controlled by pin 2. Will test at the space soon.

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Arduino code to scroll messages on either a MAX7219-type LED display or an "RDU-350" that Ray found.

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