magnetic door lock with keypad company wilmington nc

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Connect pin 3, which is the V0, to the middle of the 10k potentiometer and connect the other two pins on the potentiometer to 5V and GND on the Arduino.Connect pin 2, which is the VDD pin, to the 5V pin on the Arduino.Connect pin 1 on the LCD, which is the VSS pin, to GND on the Arduino.The connections for connecting the LCD with the Arduino are as follows: Then connect the last two pins on the 4X4 keypad module to digital pins 3 and 2 on the Arduino.Īfter that, connect the LCD to the Arduino. Circuit Diagram First, connect the 4X4 keypad to the Arduino connect the first six pins on the 4X4 keypad with the A0 and A5 pins on the Arduino.

Magnetic door lock with keypad company wilmington nc