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Internet of Things - Weekly RecapApril 10, 2015

Yesterday was the Internet of Things Day, and this week we have searched for hacks and projects that will surely get you interested and bring you closer to the IoT world.

IoT Enabler

The IoT is basically any device you can imagine (sensors, home appliances, cars) that collects and receives data and is connected to the Internet.

First thing you may think when approaching this topic is that it has to be expensive or complicated. But nothing further from the truth: here you have an example of how easily you can read temperature and humidity and send it to the Internet.

IoT Enabler

This project is build around a ESP8266 WiFi module and it reads the temperature and humidity with a DHT11 sensor. It has a 3.3V voltage regulator and a 5V relay. You can power the board through a 5V power socket or via USB cable.

This standalone board can send environmental data through a WiFi network and at the same time can control a relay with the input received.

Read about this on Instructables.

Automatic Garage Door Opener

Here's an example of home improvement with the IoT: Jamie built a garage door opener connected to Internet. He based this project on Arduino and developed an Android app to open and close the door, to see if it's open or not and even to crack it open.

Garage Door Opener

It uses an ATMega328 in the circuit board and an Arduino Ethernet shield to connect it to the home network. A reed switch and a magnet are installed in the door and connected to the board to detect when the door is open. The garage opener is wired to the circuit so the board can open and close it.

Find out more about it on this well documented tutorial.
Posted on Hackaday.

Networked Flower Pot

Waspmote Products

This project was developed last summer in the “Networked Embedded Systems” course at TU Berlin.

It is based on Waspmote, Libelium's solution for the Internet of Things, and simulates a wireless irrigation system in a greenhouse.

A group of three nodes are connected via Xbee 868. One node is used for sensing soil moisture, temperature, humidity and luminosity. Another actuator node controls
a valve to supply irrigation and a third control node is in charge of computing the user input.

The user can either select a specified time to water or a desired soil moisture range. When the plant is too dry, it is automatically watered until the preset moisture value is reached or for a selected time.

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