Building an IR-controlled scrolling marquee

The IR-controlled scrolling marquee is a remix of the project of Chapter 9, Arduino-SNAP Circuit AM Radio, where the infrared interface circuit will operate a scrolling marquee. As shown in the block diagram, the IR interface circuit provides the input control signal to allow directional operation of the scrolling marquee. The OLED LCD is wired to six control lines of the Arduino Uno. These six control lines provide binary information to operate the OLED LCD controller to display the scrolling messages on the optoelectronic device.

Pressing a button on an ordinary IR handheld remote will command the OLED LCD to scroll the message hello world! in opposite directions. Besides the littleBits remote trigger being an important component for this electronic device, the latch electronic module allows the messages to scroll in opposite directions across the OLED LCD without pressing the IR handheld remote button continuously. The reaction time for switching...