Basic Robotics Workshop

HC-05 bluetooth module with arduino to control RGB led

INTRODUCTION TO BLUETOOTH MODULE HC-05

HC-05 Bluetooth module is a bluetooth communication device that can communicate with bluetooth of smart phones and laptops. We can make various projects by using this little module in which we can control any electrical and electronics devices and appliances with our smart phones.

HC-05 bluetooth module with arduino to control RGB led

INTRODUCTION TO BLUETOOTH MODULE HC-05

HC-05 Bluetooth module is a bluetooth communication device that can communicate with bluetooth of smart phones and laptops. We can make various projects by using this little module in which we can control any electrical and electronics devices and appliances with our smart phones.

Solar Technology and Possibility in Nepal

Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly usingconcentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics convert light into an electric current using the photovoltaic effect.^[1]

CES 2016: Your Favorite Tech Is Finally Growing Up

What do 3D printers, drones, driverless cars and fitness trackers have in common? For one thing, all of these technologies are front and center here at this year's CES. But perhaps more important, these cool tech gadgets are finally growing up, said Shawn DuBravac, chief economist for the Consumer Technology Association.

In a talk here today (Jan. 5), DuBravac told a packed house about what he sees as the defining trends of CES 2016. Among them is something that he called the "maturing of nascent ecosystems." In other words, all of the cutting-edge gadgetry from past shows — like the 3D printers that churned out plastic bobble heads in 2014 and the fitness wearables that ceaselessly measured heart rate or body temperature at last year's show — these devices are growing up, or finding their place in the real world.

"I see a change in the dialogue around CES in just the last 12 to 18 months," DuBravac said. "We're talking increasingly about what's technologically meaningful compared to what's technologically possible." [9 Totally Cool Uses for Drones]

The Scalevo Wheelchair

The Scalevo wheelchair is a student project started in Summer 2014 at ETH Zurich. #ETHZ

The wheelchair is electric powered and balances on two wheels while driving on even ground. To climb and descend stairs or overcome bigger obstacles a set of tracks can be lowered dynamically to keep the user level at all times.

The driving speed on the stairs and balancing on the ground demonstrated in the video will be increased after further testing. 

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Windows 10 Issue(graphics driver)

Fix Intel HD Graphics Driver after Upgrade to Windows 10. Easily!

When your PC runs slower or you can’t watch videos as usual after Windows update, the problem most probably is caused by display card driver issues. If you have Intel(R) HD Graphics driver issues after upgrading your system to Windows 10. Don’t worry about that. Here you can find the solutions to fix the issue.

You can resolve the driver issues by updating the drivers. There are 3 different ways you can use to update the Intel(R) HD Graphics driver.

Update your Intel(R) HD Graphics driver manually

Intel has released Windows 10 drivers for their vast majority of display cards. You can go to Intel’s website and find the right driver. Please make sure you find the right version, as incompatible or wrong driver can cause serious PC problems.

After downloading the driver, if you cannot install the driver successfully by just double-clicking the installer file. You can follow steps below to update the driver manually step by step.

1. Open Windows 10 Control Panel by clicking the Start menu on Windows 10 Taskbar and clicking Control Panel.

2. View by Small icons. Click Device Manager.

3. In Device Manager, expand category Display adapters.

4. Right click on the Intel device and select Update Driver Software…

5. Click Browse my computer for driver software and navigate to the location where you put the downloaded driver file.  Then follow the on-screen instructions to install the driver.

Use Windows Update for new drivers

Following steps are for your reference how to use Windows Update in Windows 10 to update drivers.

1. Click Start menu and click Settings.

2. In Settings window, click Update & security.

3. In UPDATE & SECURITY, click Windows Update in left pane.

4. Click Check for updates, and then wait while Windows looks for the latest updates for your computer.

5. Click the link that tells you optional updates are available. (If you don’t see this link, it means Windows Update didn’t find any updates for your computer.)

6. Select the driver you want to install, click OK, and then click Install updates.

10 Famous Garage Startups that led the world

Amazon Garage#1 Amazon

Jeff Bezos founded Amazon.com in 1994 as an online bookstore. At the time, it was completely run out of his garage in Bellevue, Washington.

He sold his first book in July 1995 and issued his IPO two years later in 1997.

Today it’s the world’s largest online retailer.

Address: 10704 NE 28th, Bellevue, Washington

Apple Garage#2 Apple

In 1976, Steve Jobs and Steve Wozniak, ages 21 and 26 respectively, started Apple Computers by selling 50 units of Wozniak’s Apple I Computer at $500 apiece to a local retailer. Jobs took the purchase order to a parts distributor and ordered the parts. “The Steves” and their small team hand-built 50 computers in 30 days from a garage in Cupertino, CA.

Today, Apple is the most valuable technology company in the world.


Address: 2066 Crist Dr, Los Altos, California

Disney Garage#3 Disney

About 45 minutes down the road from Disneyland Park in Anaheim, CA, there’s a house in Los Angeles where The Walt Disney Company got its start.

SPEED CONTROL OF DC MOTOR WITH ARDUINO AND L298 MOTOR DRIVER

PWM  CONCEPT

PWM speed control is a technique of transferring desired average power to the motor driver from arduino microcontroller by increasing or decreasing the pulse width of transferred square wave signal. This is also called a changing of duty cycle of signal of enable pin. This can be done by the pwm function of arduino using analogWrite() function and with the use of potentiometer.
analogWrite(variable,0); means 0% duty cycle
analogWrite(variable,255); means 100% duty cycle
analogWrite(variable, 128); means 50 % duty cycle and so on

look and understand the figure below .