21st Century Learning and Teaching

Hi, in this tutorial we will see how to control electrical devices like fan, light, etc., to turn on and off using esp8266 from a web browser. if you are bored with a dedicated device controller like an app or an remote which will be available for only one particular device but using this method all the device which support web browsing will be act as a  controller for us.

Make sure all the devices are connected to the same router, this example doesn't include a port forwarding function which will not allow us to control the device from outside the home network. 

Components that you need for completing this project are very simple, you need to have an esp8266 wifi module and a relay, make sure you buying a 5v relay which very easy to use with esp chips doesn't require external supply too. we can make use of the Vin pin of the nodemcu or if you are using a generic chip, you need to supply an external 5v to the relay.

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=ARDUINO

https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=I2C

https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=LCD

http://blog.mklec.com/how-to-use-iici2c-serial-interface-module-for-1602-lcd-display/

https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=NodeMCU

https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=ESP8266+WiFi+Module

https://howtomechatronics.com/tutoria... ► Find more details, circuit schematics and source codes here.

In this tutorial we will learn how the I2C communication protocol works and also we will make a practical example of it with the Arduino Board and a sensor which uses this protocol. You can watch the following video or read the written tutorial below.

Visit HowToMechatronics.com for more Tutorials, Tips, Projects and How It Works videos:
► https://howtomechatronics.com/

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=ARDUINO

E-Ink. It powers everything from the YotaPhone 2 to the Amazon Kindle. It's simultaneously one of the most understated and futuristic display technologies around. And it's being put to use in devices and venues you've never even thought of. But what exactly is E-Ink, and how does it work?

That's a question we had for the folks at E-Ink Corporation, the brains behind the world's leading electrophoretic ink technology, and they were more than happy to answer it. They invited us to tour their Innovation Center and Headquarters facility in Massachusetts to get a firsthand look at the technology behind E-Paper Displays, as well as some historical context and a few sneak previews of where E-Ink is headed next. Join us for this quick tour, and then visit E-Ink yourself for more: http://www.eink.com/index.html

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https://www.scoop.it/t/21st-century-learning-and-teaching/?&tag=ARDUINO

Wire Library

This library allows you to communicate with I2C / TWI devices. On the Arduino boards with the R3 layout (1.0 pinout), the SDA (data line) and SCL (clock line) are on the pin headers close to the AREF pin. The Arduino Due has two I2C / TWI interfaces SDA1 and SCL1 are near to the AREF pin and the additional one is on pins 20 and 21.

As a reference the table below shows where TWI pins are located on various Arduino boards.

As of Arduino 1.0, the library inherits from the Stream functions, making it consistent with other read/write libraries. Because of this, send() and receive() have been replaced with read() and write().