Archive for the ‘ethernet’ Category
The Lesser Kestrel (Falco naumanni) is a small falcon at the center of HORUS, a project aiming to develop a system for automatic real-time monitoring of colonial falcons at Doñana Biological Station, a public Research Institute in Spain.
The falcons breed in nest-boxes on the window sills which the research team converted into “smart nest-boxes”: they have sensors to identify the falcons entering the box using RFID tags, but also cameras and other equipment controlled by and Arduino Mega.
conveys how close humanity is to catastrophic destruction–the figurative midnight–and monitors the means humankind could use to obliterate itself. First and foremost, these include nuclear weapons, but they also encompass climate-changing technologies and new developments in the life sciences that could inflict irrevocable harm.
In this tutorial, Luca shows how to add WiFi connectivity to your Arduino boards without using a WiFi shield. Instead, he has combined a standard Ethernet shield with a commercial (and quite cheap) WiFi router:
I found the TL-WR702N nano router by TP-LINK that, with a cost of about 20€ on eBay, can work also as a wireless client: in this mode the router acts like a “bridge” between the device connected to its ethernet port and a Wi-fi network.
After a simple setup, where Luca configured the router as a WiFi client, the Arduino board has become accessible from the wireless network. Enjoy!
[Via: Luca's blog]
Have you ever wanted a smart home that can automatically adjusts the blinds for you? If so, this project is for you.
In this instructable, the author describes his approach to “smart blinds”, by using an Arduino board, an ethernet shield, a motor shield and a couple of sensors.
By means of a simple web-based GUI, the user can manually open and close the blinds, or he/she can setup both temperature and brightness thresholds in order to automate the whole process. Finally, opening and closing events can also be scheduled at pre-defined times of the day, if necessary.
The complete tutorial, together with the source code of the project, can be found here.
If your office suffers of ”conference room abuse” you should build your own “roominator” to coordinate it:
Conference Room Abuse is where people 2 or more people randomly grab a conference without any regard to the schedule for the room. Its a problem many companies face.
[Rapleaf] tried to solve this by creating a system to coordinate the (mis)use of room conferences
The hardware consists of two parts: a display unit that’s posted outside of each conference room, and a controller unit that’s located in Rapleaf’s wiring closet. The display unit shows the current and upcoming reservations and an LED status indicator that can tell you from a distance whether a room is “good to grab”. It also has a pair of buttons – one to make an ad-hoc reservation and one to cancel the current reservation. The controller unit interfaces with all the displays to distribute power and data, both of which run over a single standard Cat5e cable. Both the controller and the displays are Arduino-based.
The software component is a Rails web site that allows for configuration and integrates with Google Calendar. Reservations made via Google Calendar are sync’d with the Roominator, and vice-versa. The controller unit polls the web site for the information it should pass to the displays.
Rapleaf open sourced the code on github, with all the instructions for the set up.
[Viorel] wrote me about an interesting project he and his friends from Robofun developed during the 2011 Yahoo Open Hack in Bucharest, and won the Hacker’s Choice Award. The diorama becomes a physical representation of tour friends’ behaviours.
If you’re a both nature lover and a geek, you would certainly love the Yahoo Farm. The Yahoo Farm is a 60 cm wide diorama, sitting in your bedroom and bringing you online data from the Yahoo ecosystem.
For example, the wind mill rotation below is directly controlled by the wind speed outside (being connected to the Yahoo Weather API), the hand-painted backgrounds are switched according to the weather state, a new sheep is coming out of the barn each time one of your friends gets online on Yahoo Messenger, and each new email lights up a fruit in the Email Tree.
Give a look at the presentation used for the 90 seconds pitch during the event.
Nice RESTduino demo #1 by [Jason Gullickson]: what is RESTduino?
RESTduino is a simple sketch to provide a REST-like interface to the Arduino via the Ethernet Shield. The idea is to allow developers familiar with interacting with REST services with a way to control physical devices using the Arduino (without having to write any Arduino code).
Of course some flexibility is traded for this convenience; only basic operations are currently supported:
- Digital pin I/O (HIGH, LOW and PWM)
- Analog pin input
Later versions of the sketch may provide additional functionality (servo control, etc.) however if you need more than just basic pin control you’re probably better off learning the basics of programming the Arduino and offloading some of your processing to the board itself.
This is an art project born as the collaboration between Varvara Guljajeva and Mar Canet. During the last couple of years they have been collaborating in the creation of several interactive installations, some of them containing Arduino boards. The Rythm of City is about to be presented in the following weeks at the Czec Festival Enter5 and has pretty good online documentation, so I think it is interesting to show it here.
The Rhythm of City(2011) is a mixed reality real-time artwork that applies geo-located social data for an artistic purpose. It is an art installation that explains in original way digital geo-located social content and characterizes cities [...] Moreover, we would like to give an alternative meaning and purpose to the location-specific invisible online data. In short, the artwork makes invisible information visible and even audible.
[...] Important thing is that we do not rely on single social network but multiple. At the moment we are applying Twitter, Youtube, and Flickr. We plan extend our selection.
The installation controls 10 metronomes via servomotors using one Arduino Mega2560, The data to decide whether the metronome should be active and how active it should be is taken from geo-tagged posts to social networks. The following video hints how it works with 5 linked cities represented by 5 metronomes:
For more information visit Varvara Guljajeva or Mar Canet‘s personal websites, this blog explaining the process, the technical diagram, or the festival page with information where to see the piece in action this April.