Get to know about Ultrasonic Sensor HC-SR04

Ultrasonic Sensor HC-SR04 is used to measure distance. We can find precise distance to an object from sensor, or can used to detect when something is within range of the sensor. It can measure distance with high accuracy from 2cm to 400 cm. Its operation is not affected by sunlight or black material .Because it uses sound to measure distance.

Ultrasonic range finder measure distance by emitting a pulse of ultrasonic sound that travels through the air until it hits an object. It measure how long it takes the sound pulse to travel in its round trip journey back to the sensor when the pulse hits the object. Then it sends an electrical signal to the Arduino with information about how long it took for the sonic pulse to travel.

Ultrasonic range finder has 2 transducers.

•         Transmitting transducer
•     Receiving transducer

Create knight rider circuit using arduino MEGA 2560

Last time I discussed about Arduino Mega 2560 micro controller board . Now I'm going to discuss about a simple project using Arduino Mega 2560. Let's start it.

 We want following components to make the circuit with the Arduino MEGA 2560 .

                                                                       

 10 LEDs

Male to male jumper wires

One bread board

   

270 Ohms Resister

Get inspired with Arduino MEGA 2560

What is Arduino Mega 2560 ?

    The Mega 2560 is a micro controller board which is designed for more complex projects like 3D printers and robotics projects. It has

•  54 digital input/output pins - 15 can be used as PWM outputs
•  16 analog inputs
•  4 UARTs - referred to as universal asynchronous receiver/transmitter that translate data in asynchronous serial communication format
•  a 16 MHz crystal oscillator - used to create an electrical signal with a precise frequency.
•  a USB connection
•  a power jack
•  an ICSP header - referred to as in-circuit serial programming that used to programme micro controllers 
•  a reset button.