I bought a TSL2561 on a bob and I must say it is a very nice piece of kit! Super easy to get started. I was looking for something which would give me values I could relate to other instruments, and this little piece is getting the job done.
Now, I am wondering if we can do a bit more with this sensor, but perhaps I need to get my concepts straight. This is where the community might be able to direct me in some directions.
I am interested in measuring the amount of a specific wavelength of light. Now, with audio/noise, I can use FFT functions to split out the frequencies and see how strong a particular frequency might be. Can I do the same for a signal coming from the TSL2561 or other photodiode? Perhaps I am not even in the correct ball park about this sort of stuff. So to summarize:
1. Can the TSL2561 be used to measure the intensity of a specific light wavelength?
2. If so, what would be the way to go about it?
3. Can FFT be used to take care of such a task?