This was more of a "fun" project. Most of the embdSocial team members are Foursquare users, and we wanted show off how your embedded projects can become "social". To this end, we created a Foursquare "plugin" that makes it easy for you to integrate Foursquare functionality into your devices. Using this plugin, we created a Lamp that indicates the number of Foursquare users currently checked into a specified location.
device, Arduino Pro Mini, Transistors
Electronics (device, Arduino) are powered by 5V wall-wart
Transistors are used to power each LED cube individually
Arduino Pro Mini plugs into connectors pictured
The original LED lamp
9 segmented, color-changing blocks
Back of lamp with screws for easy access!
Each "cell" contains the color-chaning logic with power daisy-chained from "cell" to "cell"
Close-up of each "cell"
Each cell now has an independent ground wire (so we can turn it on and off)
Each ground wire will be run to a transistor (switch) controlled by the Arduino
Power and control wires for each "cell"
Control lines for each "cell" have been wired to their respective transistors
Each transistor is controlled by the Arduino Pro Mini
Arudino Pro Mini communicates with the device over TTL serial
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