Arduino Tutorial for Beginners 15 - Using 4×4 Keypad With Arduino

Welcome to this video on Arduino Tutorial for Beginners. This video about Keypad 4x4. This video shows how keypad works and how to receive key capture on keypad Connect R1-R4 to Arduino pin 4-7 Connect C1-C4 to Arduino pin 8-11 Algorithm to capture keypad: Check the column are changed status Set the Rows Ri to LOW Check that column are changed if not - i if change - print out and set all rows to LOW Code in library : #include Keypad.h Include keypad library char hexaKeys[ROWS][COLS] = { {’0’,’1’,’2’,’3’}, {’4’,’5’,’6’,’7’}, {’8’,’9’,’A’,’B’}, {’C’,’D’,’E’,’F’} }; Change the key to match with your key byte rowPins[ROWS] = {3, 2, 1, 0}; byte colPins[COLS] = {7, 6, 5, 4}; Change the rows and column to match with your rows/column ... #ProgrammingKnowledge #analog_input #Arduino #Tutorial #Learning #Board_Description #Variables_and_Constants #Advanced_I/O_Function #Inter_Integrated_Circuit #Introduction_to_Arduino 20190506 CMR92LVg25A