The 4x4 matrix keypad has 8 pins to interface with Arduino. Even it reduces the number of GPIO pins to interface with Arduino still we may require more pins for other hardware. In this topic, we will see how to use the keypad with using only one pin of Arduino.Before moving further we need to know about the Voltage...
We have seen how a Matrix keypad works and How to use it with Arduino in the last tutorial. This tutorial explains how to use this keypad with a Buzzer.Let’s connect Arduino with a buzzer and program it to perform this action 'when a particular key press happens the Buzzer will Beep for 1 second. You can also connect a...
A matrix keypad is a small compact input device that accepts user inputs and processed by Microcontrollers. You might have seen this in most commonly used devices like Calculators, Digital locks, Gas pumps and DIY projects. It comes in different types, one of them is membrane keypads, it is thinner in size and you can paste it on top...
Arduino can be programmed using C and C++. Most of its library is written in C++. We will be using Arduino IDE to program it. There are few other IDE also available, but Arduino IDE is built by its creators. In this tutorial, we will see how to get started with Arduino Programming and what are the terms used...
Sonoff is a WiFi controlled switch which is embedded with ESP8266 IC and has relays to control the device via the Internet. This IC can be flashed and reprogrammed by Arduino IDE. The makers of Sonoff published the libraries and Arduino files on their GitHub page. Initially, it has only for Sonoff made boards only, after that it supports...
Arduino Micro is the smallest board of the family, easy to integrate it in everyday objects to make them interactive. The Micro is based on the ATmega32U4 microcontroller featuring a built-in USB which makes the Micro recognizable as a mouse or keyboard.The Micro is developed in conjunction with Adafruit. It has 20 digital input/output pins (of which 7 can be used as...
The Arduino Leonardo is a microcontroller board based on the ATmega32u4. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it...
The Arduino Due is the first Arduino board based on a 32-bit ARM core microcontroller. With 54 digital input/output pins, 12 analog inputs, it is the perfect board for powerful larger scale Arduino projects.The Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex-M3 CPU. It is the first Arduino board based on a 32-bit ARM core microcontroller. It...
The MEGA 2560 is designed for more complex projects. With 54 digital I/O pins, 16 analog inputs and a larger space for your sketch it is the recommended board for 3D printers and robotics projects. This gives your projects plenty of room and opportunitiesThe Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of...
The LilyPad Arduino is designed for e-textiles and wearables projects. It can be sewn to fabric and similarly mounted power supplies, sensors, and actuators with conductive thread. The LilyPad Arduino Main Board is based on the ATmega168V (the low-power version of the ATmega168) or the ATmega328V.Technical SpecsMicrocontroller: ATmega168 or ATmega328V Operating Voltage: 2.7-5.5 V Input Voltage: 2.7-5.5 V Digital I/O Pins: 14 PWM...
