Keypad Door Lock Arduino

We used analog pins since we need more that 14 digitals pins for this project.

Keypad door lock arduino.

Learn how to use keypad with arduino how to connect keypad to arduino how to code for keypad how to check keypad password how to program arduino step by step. First of all we start from the brain of this project which is the arduino uno board. First of all we will make the connection to the 4 4 keypad. A 16x2 lcd will be used for display.

The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino. When you turn on the keypad the red light will be on. After working on the code and fixing many bugs due to simple mistakes the keypad lock works with a three digit code which is 427. Connect the first six pins on the 4x4 keypad with the a0 and a5 pins on the arduino.

The simply compile it then finally upload it to the atmega328 microcontroller. First connect the 4x4 keypad to the arduino. The arduino board is connected to an lcd and a servo motor. The complete circuit diagram for our arduino based digital keypad door lock project is shown below.

In this video you can learn how to make a simple password based door lock system using arduino servo motor and 3 4 matrix. If you are using arduino mega then there is no need to use analog. Green open and red closed. When you enter the correct 4 digit password the door is opened for 5 seconds.

Then connect the last two pins on the 4x4 keypad module to digital pins 3 and 2 on the arduino. The connections for connecting the lcd with the arduino are as follows. Simple code for arduino keypad door lock systems for beginners. In this project we are going to make a keyless door lock system which uses a 4x4 keypad to enter the keys and a dc lock to open or close the door.

Circuit diagram for arduino keypad door lock. Arduino keyless door lock system with keypad and lcd 0. You can simply copy paste the code using arduino ide. This is a simple arduino project.

There are red and green led light to show if the keypad is locked or unlock. The servo motor is used to push lock or pull unlock. For connecting the keypad with the arduino we are using both analog and digital pins. The keypad lock has become a success.

After that connect the lcd to the arduino. Hello you all i ve been working on a lock system for a while i started looking for some codes to use in my project but unfortunately i found a lot of complex ones and most of them have some fails especially when they use pointers you can try the. The components required for this project are as follows.