This video shows my “Romantic Lighting Sensor”. It let’s me know when my place is lit romancally. It is one of Robert Faludi’s example projects in his book “Building Wireless Sensor Networks”. The video above shows the basic version where the yellow light starts to shine if the lighting is good enough. The Red flickering light indicates if the XBee’s are communicating with each other.
A variation of this project is shown below where there is also a feedback light placed on the sensor board for more convenience. The arduino code for both projects can be found on Robert Faludi’s website.