Showing posts from October 2, 2016

H-Bridge Motor Driver for Arduino Using Transistor

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.

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


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.
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.

What Is a Black Hole?
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. They are invis…