A Spark.io Indoor Ambient Quality Monitor
Davide Gironi has build an indoor ambient quality monitor based on particle.io :
SXAM (Spark to Xively AMbient quality monitor), is an ambient quality monitor that logs 4 environmental parameters to the xively.com and display the ambient status by using for RGB leds.
SXAM logs: Humidity, Temperature, Ambient noise, Brightness, Note: Spark.io is now Particle.io.
A Spark.io Indoor Ambient Quality Monitor – [Link]