#include <Keypad.h> #include <LiquidCrystal_I2C.h> #include <Wire.h> LiquidCrystal_I2C lcd(0x27, 20, 4); // I2C address 0x27, 20 column and 4 rows #define pulsesensor 3 const byte ROWS = 4; const byte COLS = 4; char keys[ROWS][COLS] = { {'1','2','3','A'}, {'4','5','6','B'}, {'7','8','9','C'}, {'*',…

Thank You! I am currently reading your breakdowns of the keypad use and is very helpful

New to Arduino! Would like to stop at a count using keypad for input number. Counting & Keypad work but am lost how to use the keypad for input

UKHeliBob January 19, 2024, 7:28pm 2

Welcome to the forum

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