Posts

Showing posts from October 2, 2016

H-Bridge Motor Driver for Arduino Using Transistor

Image
Hello everyone, In this post we will be building our ownH Bridge motor driver module for Arduino using transistors. Technical specifications: Control motor speedusing PWM pins of Arduino.Control motor direction.Can run any small hobby DC motor consuming250mA(Maximum).Why a H Bridge? Unlike my last attempt to control motor using a single transistor, the H bridge module consists of 4 transistors. Because, the single transistor motor driver was able to control the speed of motor. But, unable to control direction of the motor.So, We need a H bridge of transistors in order to control speed as well as direction of the motor efficiently.Also, This motor driver dose not cost any more than $1.25 USD making it super cheap. Find the circuit on Autodesk Circuitshere. Step 1: Gather the parts

Arduino Programmer - Software.

Image
As we know that, to programme an arduino we need software. The software can be downloaded from the given link.

http://arduino.en.downloadastro.com

STEPS TO PROGRAMME AN ARDUINO :

STEP 1
Arduino microcontrollers come in a variety of types. The most common is theArduino UNO, but there are specialized variations. Before you begin building, do a little research to figure out which version will be the most appropriate for your project. STEP 2
To begin, you'll need to install the Arduino Programmer, aka the integrated development environment (IDE). STEP 3
Connect your Arduino to the USB port of your computer. This may require a specific USB cable. Every Arduino has a different virtual serial-port address, so you 'll need to reconfigure the port if you're using different Arduinos. STEP 4
Set the board type and the serial port in the Arduino Programmer.
STEP 5
Test the microcontroller by using one of the preloaded programs, called sketches, in the Arduino Programmer. Open one of the example …

Perfect Documentary about Black Holes.

Image
Black Holes. A Universal Mystery !! 

An artist's drawing a black hole named Cygnus X-1. It formed when a large star caved in. This black hole pulls matter from blue star beside it. Credits: NASA/CXC/M.Weiss An artist's drawing shows the current view of the Milky Way galaxy. Scientific evidence shows that in the middle of the Milky Way is a supermassive black hole. Credits: NASA/JPL-Caltech This image of the center of the Milky Way galaxy was taken by the Chandra X-ray Observatory. Credits: NASA/CXC/MIT/F.K. Baganoff et al. Sagittarius A* is the black hole at the center of the Milky Way galaxy. Credits: X-ray: NASA/UMass/D.Wang et al., IR: NASA/STScI This article is part of the NASA Knows! (Grades K-4) series. A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes.…