In this article we discussed about 16x2 LCD, its working, pinout, and also how to use 16x2 LCD with Arduino. We provided Circuit Diagram, Complete Arduino Code, and step-by-step guide. Skip to main ...

Pins 11, 12, 13 and 14 are data pins of the LCD that are connected to pins 7, 6, 5 and 4 of Arduino, respectively. Preset PR1 is used to adjust the contrast of the LCD display. An electronic door-lock ...

This project demonstrates how to create a digital safe lock system using an Arduino, a 4x4 keypad, and a 16x2 LCD display. ... #Circuit Diagram Keypad ... Arduino Pin 6 6.Column 2 (C2): Arduino Pin 7 ...

The DIY biometric lock is also equipped with three push buttons and a 16×2 LCD display. “This is a security door lock with fingerprint sensor. It is able to record all the door actions to and ...

Circuit Diagram and Explanation: In this Raspberry Pi Finger Print sensor interfacing project, we have used a 4 push buttons: one for enrolling the new finger pring, one for deleting the already fed ...

This project is a security system for ESP32, allowing users to enter a PIN using a 4x4 membrane keypad. If the PIN is entered correctly, the system displays a message on the LCD screen, and in case of ...

Arduino is the heart of this programmable display. The circuit is shown in Fig. 1. Fig. 1: Circuit diagram of Arduino based programmable digital data display. The power supply is applied through the ...