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Arduino Keypad Interfacing,Arduino Keypad, Keypad Arduino,Keypad interfacing with Arduino, how to interface keypad with Arduino, keypad interfacing using Arduino, interface keypad with Arduino, keypad interfacing with Arduino circuit diagram, Interfacing of keypad with ArduinoHello everyone! I hope you all will be absolutely fine and having fun. Today, I am going to give you an elaboration about Arduino Keypad Interfacing. First of all I would like to tell you a bit about keypad. After getting some idea about the keypad we will start our discussion about Arduino Keypad Interfacing. Keypad consists of different numeric buttons. Some keypads also have the buttons having alphabetic characters on them. Keypad is an important part of the engineering projects where there is a need to send different commands to perform different actions. They are cost efficient and easily available in the market these days. You should also have a look at Interfacing of Keypad with Arduino.

We can assign different individual task to each of the keypad’s button and can perform the same action using them. Keypads are available in the market but some types of the keypad are most common in today’s market. These types include 3×3 keypad, 4×3 keypad, 4×4 keypad. In this tutorial I am going to use 4×4 keypad. It has sixteen buttons having four alphabetic characters. Keypad has a very wide range of real life applications. Its applications includes the projects e.g. mobile phones, calculators, laptops, personal computers, television remote, toy’s remote, microwave oven, photocopy machine, bank’s ATM machine, tablets and a lot more. The further detail about Arduino Keypad Interfacing will be given later in this article.

Arduino Keypad Interfacing

Keypad is an equipment used in the different projects where we need to send different commands to perform anything. It is a low cost equipment and easily available in the market. It is the most common equipment with a very high customer demand in the market now a days. Keypad has several applications in real life based projects e.g. calculators, mobile phones, computers, ATM machines etc. Keypad is shown in the figure given below.

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1. Keypad Pins
  • I am using 4×4 keypad in this tutorial, it has total eight (8) pins.
  • All of these pins are provided in the table shown in the figure below.

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  • From the above table we can see that keypad’s first four pins are associated with its four rows.
  • The last four pins are assigned to the four columns of the keypad.
2. Keypad Pins Description
  • Keypad’s each pin is assigned with the different task to perform individually.
  • 4×4 Keypad’s pins functions are listed in the table provided in the figure given below.

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3. Components Required for Arduino Keypad Interfacing
  • A complete list of the components required for the keypad interfacing with Arduino is shown in the table provided in the figure given below.

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4. Keypad & Arduino Connections
  • The connections between keypad and Arduino are provided in the figure given below.

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5. Keypad Interfacing with Arduino Wiring Diagram
  • I have made a wiring diagram for keypad interfacing with Arduino.
  • A complete labeled wiring diagram is given in the figure shown below.

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6. Circuit Diagram of Arduino Keypad Interfacing
  • In this section I have provided the actual circuit diagram for keypad interfacing with Arduino.
  • You can make the similar diagram and can easily test & verify your results on the serial monitor.

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7. Keypad Interfacing with Arduino Source Code & Description
  • You just need to copy this code into your Arduino software.
  • After successfully uploading the code to your Arduino board you will be able to verify the results.

  • First of all I have defined the number of rows and columns of keypad.
  • Then I have declared the complete keypad characters in terms of rows and columns.
  • After that I have defined the the row and column pin of keypad attached to the Arduino pins.
  • Then I have simple read the data sent from the keypad and displayed it on the serial monitor.
  • You can download a completely labelled wiring diagram and Arduino source code here by clicking on the button below.s

Wiring Diagram & Arduino Code

8. Keypad Features
  • Features play a vital role in the importance of any equipment.
  • Keypad basic features are listed in the table given in the table shown in the figure below.

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9. Keypad Applications
  • Usually, a device become popular on the basis of its applications.
  • Most of the time it is known on the basis of its applications.
  • Keypad major applications are provided in the table given in the figure shown below.

 

In the tutorial Keypad Interfacing with Arduino I have explained about the basics of the keypad as well as the keypad interfacing with Arduino UNO. I have tried my level best to cover up all the necessary information. If you found something missing, please let me know then. I will update my tutorial correspondingly as soon as possible. I hope you have enjoyed the complete tutorial and I am hoping for your positive response. If you have any problem you can freely ask as in comments anytime. I and my entire is 24/7 available to entertain you. I will share different topics in my upcoming tutorials. Take care and bye till the next tutorial 🙂

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