1 : Displaying name using 9 LEDs on pressing push button
The exercise is about developing functions for each letter of the alphabet in the form of a 3x3 matrix. For example the UDFs of letter A and letter D are shown below. When the concerned UDFs are called, they will ensure the concerned LEDs will brighten while the rest are OFF for a specific delay time to ensure the letter is readable by the viewer.
Video at last.
2 : Blinking LEDs on pressing push button
3 : Arduino code (Loop and funtions)
4 : Printing the letter typed on serial monitor using 9 LEDs