In this tutorial, we will attach a AC appliance with Relay and make a temperature controlled home automation system using Arduino. It also shows the temperature and appliance status on the 16*2 LCD display connected with the circuit.
In this project, we will learn how to build a simple robot using Arduino that could move towards the fire and pump out water around it to put down the fire. It is a very simple robot that would teach us the underlying concept of robotics; you would be able to build more sophisticated robots once you understand the following basics.
We have some instruments which could measure the sound signals in dB but these meters are slightly expensive and sadly we do not have an out of box sensor module to measure sound levels in decibels. And it is not economical to purchase expensive microphones for a small Arduino project which should measure the sound level in a small classroom or living room.
Dog vs. Robot! Who will win?!?!? … oh.
You can control robots online right now: https://letsrobot.tv
We use two Ultrasonic sensors to determine the position of our hand and control a media player (VLC) based on the position. I have used this for demonstration, but once you have understood the project, you can do anything by just changing few lines of code and control your favorite application in your favorite way.