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IoT & Cloud - Weekly RecapApril 17, 2015

This week in Libelium, our main Cloud Partners and Distributors have come to our headquarters to participate in our first IoT Cloud Week. The aim of this meetings was to provide specialized Cloud training for distributors. Find out more here.

Following this week's theme we have been searching for cloud related hacks and projects. Here's what we have found.

Cloud-Enabling a Bathroom Scale

Summer is getting closer and we all want to watch our weight. Darryl Tan shared a pretty cool hack that could help you out. He came across a scale with a wireless (infrared) display that can be detached, so you can see your weight on it.

Darryl had some experience with IR signals so he used a 38kHz IR receiver and a 38kHz IR receiver and a logic analyzer and found out it was encoding the data by pulse distance coding. To decode the data he captured the waveform of several amounts of weight and exported the values until it looked like increasing hexadecimal numbers, then he figured out how the weight was represented and the bytes corresponding to the status and checksum.

CloudScale2

Then it was time to connect it to the cloud to be able to plot the data. He used a Raspberry Pi and wrote a Python script to monitor the IR receiver. The script checks the status byte to send the data (weight and time) to the Google Docs Spreadsheet. He added a small LED to indicate when the data has been saved.

Don't forget to visit Darryl's blog.

Posted on Adafruit.

Solar tracker

This is an Internet Cloud connected Solar Tracker. This project came up after the need to automate the irrigation of a vegetable garden. The objective was for the garden to be kind of self-sufficient, so a solar panel for tracking means the garden can water itself when it needs to. On the other hand, to make the tracker efficient it had to be inexpensive.

The project is built around a wooden two-axis platform, wooden gears and re-used curtain pole. It includes a 90 Watt solar panel, a rechargeable battery, accelerometer, magnetometer and stepper motors. It is connected to the Cloud via WiFi, and the system is controlled by an Electric Imp.

Find out more in Instructables about this multi-themed project.

Cloud Based Smart Water Meter

You probably know about the severe drought California is facing at this moment. Here's something that can be helpful to avoid wasting water: Team H20 built and programmed a smart water meter to track the amount of water you use at home. They 3D printed some custom parts and used a servo, an Ultrasonic Sensor and an Intel Edison to control the system.
h20_schematic

This project allows to read water flow to send the data to the cloud (Microsoft Azure). They also developed an app that shows the data to the user in order to make a more responsible use of water.

Via Hackster.io

Here at Cooking Hacks we also have our own Arduino-based platform for water monitoring: Open Aquarium. It is designed to automate the control and maintenance tasks in fish tanks and ponds. It can detect water level and leakage and measure temperature, pH or Conductivity. It also includes several actuators: fish feeder, heater, LED lamp and water pump.

On the other hand, we have the Waspmote solution provided by Libelilum: Smart Water. It is a wireless sensor platform for water quality monitoring. Oriented to Smart Cities, it enables to measure multiple parameters (pH, turbidity, temperature...). and features autonomous nodes that connect to the Cloud for real-time control.

See a comparative review.

Check these IoT related hacks.

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