here is the code #include <Keypad.h> #include <Wire.h> #include <LiquidCrystal_I2C.h> #include <LCD.h> LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7); int kdelay = 50; int period = 0; const byte ROWS = 4; const byte COLS = 4; char hexaKeys[COLS][ROWS] = { { '1','4','7','*' }, { '2','…

Hello Change the return type of your function GetNumber, from int to unsigned long

I type 99999 in keypad, and it shows 4294936223 on my serial computer

programpro November 23, 2021, 7:53am 5

thanks, its working now

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