Create a Calculator using Arduino, LCD display, 4x4 matrix keypad, I2C bus in arduino | Project#3

Hey Guys, In this video you learn how to make a Calculator using Arduino. The row and column pins should be correctly matched, in this command, LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); you should know the I2C address, mine is 0x3F, and also the pin configuration of I2C bus (mine is 2, 1, 0, 4, 5, 6, 7, 3 for IC PCF8574AT I2C module ) or else the code won't work, there are many I2C scanners you can find one below. Just connect SDA to A4 pin, SCL to A5 pin, Gnd and Vcc Pins to arduino and run the I2C scanner code and open serial monitor.

#arduino project 3

[Tech__]

Very good initiative and wish you to do more projects like this..

[rocketscience]

Thats cool project but i dont know why if i download the code and i try to verify that it write that the code was error