DIY Calculator using a 4x4 Keypad and 16x2 LCD Display: A simple calculator that takes input from a 4x4 keypad and displays results on an LCD screen. DIY Thermometer: ... Open the .cpp File – Review ...

Power and Ground: Connect the LCD’s VSS to Arduino’s GND. Connect the LCD’s VDD to Arduino’s 5V. Contrast Adjustment: Connect the middle pin of the potentiometer to the LCD’s VO pin. Connect one side ...

Let’s see how to connect the LCD module to Arduino. For that first, connect the VSS to the GND and VDD to the 5V. To use the LCD backlight, connect the backlight Anode to the 5V and connect the ...