I started this little project the other day when I saw that Instructables had posted a competition for the use of Sensors, however its turning out to be a bit more interesting.
My original idea was to take a very simple project (examples in one form or another are available all over the web) add a sensor and reprogram it in a way that would allow the sensor (a Light Dependent Resistor) to control the lights.
After all a lot of the wiring on projects can be the same its the programming that changes the way it works.
Anyway - I put it all together, got it to work and realised that it was quite a sad effort. so I decided to try to link the serial port back to the computer to send real time data to a graphing package.
You could use this as a diagnostic tool to monitor and display results from your robotic sensors to ensure that they perform as required on your projects. Yes you can do this in the monitor window of the Arduino software, but you cannot save or trend the data in that application.
More interesting uses for this type of project would be to monitor how light levels change throughout the day comparing things like cloudy days to brilliantly sunny days.
Another option is as security sensor to track entrances into a room.
Once I had captured the data I used excel 2013 to chart it, but also later on you can see that I have had a go with Plotly as well and found it to be a really good tool for creating quick and simple representations
If this interests you then please read on - if not then please take a look at some of my other projects, but I hope you enjoy all of them.