Keypad Archives - electroSome

Calculator using Arduino Uno

Ali Hamza — Tue, 26 Dec 2017 06:30:48 +0000

Arduino Uno has always helped to build projects easily and make them look more attractive. In this project, we are going to make an Arduino Uno calculator which will take the values from user by using the 4X4 keypad and then will perform the calculations to get the result. After calculating the result, it will print […]

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Digital Door Lock using Arduino

Ali Hamza — Sat, 10 Dec 2016 07:29:16 +0000

As thefts are increasing day by day security is becoming a major concern nowadays. In this project we will make a digital door lock system with keypad using Arduino Uno. It will open your door only when the right password is entered and it will start beeping when a wrong password is entered. Components Required 4×4 […]

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Interfacing Keypad with 8051 Microcontroller using Keil C

Ebin George — Sat, 08 Jun 2013 13:40:39 +0000

Matrix Keypad Matrix Keypads are commonly used in calculators, telephones etc where a number of input switches are required. We know that matrix keypad is made by arranging push button switches in row and columns. In the straight forward way to connect a 4×4 keypad (16 switches) to a microcontroller we need 16 inputs pins. […]

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