THP Entry: Cut Energy Consumption by 30 percent with this WiFi XBee Setup

Let’s be honest. Paying electricity bills sucks. The amount paid is always too much, and the temperatures in the building are rarely set at a comfortable level. But now, with the help of this DIY Climate Control system, power-users can finally rejoice knowing that the heating and cooling process of their home (or commercial space) can be easily controlled through the utilization of an XBee Remote Kit and a process called zoning.

The team behind the project is [Doug], [Benjamin] and [Lucas]. They hope to solve the inconsistent temperature problems, which are caused by a moving sun, by open-sourcing their work into the community.

Their XBee system runs on a mesh network making it a perfect tool for sensing and communicating which areas in the house are too hot or too cold. Once the data is collected, XBee modules route the information wirelessly to each other until it reaches a central Arduino gatekeeper; which then decides if it wants to heat, ventilate, or air condition the room.

Not to mention all the added benefits posted below:

For one, you can hook-up temperature ICs like the TMP36 (PDF) without the need to buy extra parts. Better yet, the XBee can be programmed to fall asleep thus saving battery life. This means that the whole module can run on rechargeable AAA batteries.

Even further, it can be coded at its various ports to read other devices. This is great because it gives the setup the potential to turn on and off devices that are hooked to the module, transforming it into a networked hub of interconnected devices.

This approach not only allows you to be involved in saving the planet, but it keeps your home, warehouse, or office building at a much more comfortable level in the process, a real win-win.

The project featured in this post is an entry in The Hackaday Prize. Build something awesome and win a trip to space or hundreds of other prizes.

Filed under: home hacks, The Hackaday Prize
Hack a Day 23 Jul 21:01

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Instructables 23 Jul 18:05

Opensourcing imagination and sharing knowledge in Nepal

David Cuartielles held a worshop at Campus Party Berlin introducing  Arduino and the cool things you can do with it. Some months later, on of the students, Sanjeet Raj Pandey, wrote him to reveal that the event was a life changing moment.

After that Sajeet decided  to share his knowledge and experience organising workshops in a rural city called Janakpur in Nepal. In that occasion a 100 participants got introduced to Arduino. They learnt how to blink LEDs, work with a temperature sensor, light sensor, ultrasound sensor and also to make a DIY Arduino:

Most of it was financed by myself and a bit of donation from Telecommunication department -Technical University of Berlin and Berlin Promotion Agency.

I like to make things which are real and can be put to work for society . Making things, one just cannot see but also touch is awesome.

Hope you will share Janakpur (Nepal) as one more place with Arduino. I would be keeping up pace and will be doing more such projects, workshops, seminars, remote sessions, etc for students in Nepal.

These are some pictures from the workshops:

Do you have a similar story to share? Submit it to our blog!

Arduino Blog 23 Jul 17:40

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By: yhtomitsy

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Instructables 23 Jul 13:25

POV Display Does it on the Cheap

[Sholto] hacked together this ultra low-budget spinning display. He calls it a zoetrope, but we think it’s actually an LED based Persistence Of Vision (POV) affair. We’ve seen plenty of POV devices in the past, but this one proves that a hack doesn’t have to be expensive or pretty to work!

The major parts of the POV display were things that [Sholto] had lying around. A couple of candy tins, a simple brushed hobby motor, an Arduino Pro Mini, 7 green LEDs, and an old hall effect sensor were all that were required. Fancy displays might use commercial slip rings to transfer power, but [Sholto] made it work on the cheap!

The two tins provide a base for the display and the negative supply for the Arduino. The tins are soldered together and insulated from the motor, which is hot glued into the lower tin. A paper clip contacts the inside of the lid, making the entire assembly a slip ring for the negative side of the Arduino’s power supply. Some copper braid rubbing on the motor’s metal case forms the positive side.

[Sholto] chose his resistors to slightly overdrive his green LEDs. This makes the display appear brighter in POV use. During normal operation, the LEDs won’t be driven long enough to cause damage. If the software locks up with LEDs on though, all bets are off!

[Sholto] includes software for a pretty darn cool looking “saw wave” demo, and a simple numeric display. With a bit more work this could make a pretty cool POV clock, at least for as long as the motor brushes hold up!

[via Instructables]


Filed under: led hacks
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