Many times you would have wished that you could take care of your dog remotely instead of letting a careless friend handle him. The answer to the problem is this ingenious twitter based feeding device by Nat Morris.
Theres a Nanode microcontroller (an Arduino clone with ENC28J60 ethernet), LCD screen from an old Dell laser printer, the stepper motor mechanism is out of a HP Deskjet 500 from the 90’s. The stepper is controlled via a ULN2003 and a 555 timer is used for the buzzer. Theres a pair of IP cameras (ones broke at the moment) and a server process which polls twitter and co-ordinates it all.
So how many more applications can you think of using the same concept?
Impressing automotive hacking lets this FIAT car moving by the number of “like” from the Guarana Antarctica Facebook Fan Page. The advertising idea is simple: let the social audience support this Sau Paulo to Salvador trip to reach the Carnivalby commenting / “liking” the page. The onboard Arduino ADK (connected to a tablet and the internet) allows the car going on by a certain amount of meters (apparently one “like” is 10 meters, while each comment lets the car go ahead for 20 meters).
[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.
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.
(c) 2011 Rythms by Canet and Guljajeva
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:
Arduino Forum User [Donster] posted a project about a Christmas Tree whose lights are lit by the word “Merry Christmas” on twitter:
The basic idea is having the lights on the Christmas Tree turning on everytime someone tweets “Merry Christmas”.
It’s still pretty much a prototype but you get the idea. Sometimes the live stream gets out of synch with the tweet overlays, but generally it stays on track.
The actual setup is really all based off a lot of relays running 12V 1W LED’s. I started out with 10W halogens and after a few burnt tree branches I decided to try and find an LED which gave off as little heat as possible! It also meant a 20Amp powerpack could run all 30 lights.