1 sensor to detect full it range? Available?

Other Hardware Sensors
1

I have some ideas, but need to determine the ir wave length of a few devices. Is there a sensor I can get that with the help of an Arduino will tell me the ir wavelength of the input?

Or am I out of luck and will just need to buy a set of sensors and test each on?

Thanks for your time.

2

Please tell us more.
Do you want to build a infrared spectrum analyzer ? A lambdameter ? What do you need it for ?

I don't even know what a lambdameter is, I just found that word somewhere :wink:

3

I suspect that a lambdameter indicates lambdas.

@OP Do tell us about these "devices".

4

I have some random leds, some nice laser tag guns, a few toys that work with off of ir. I would also like to find nm of a few remotes to make diy extenders / repeaters.

I would like to detect what range this thing are in so I can build custom hardware to work with them.

5

IR LEDs emit over a range of wavelengths. Two common types have maxima at 850 nm and 940 nm (see below). But photodiodes typically have a much broader detection range (second image) and will "see" both LEDs.

Silicon photodiode response:

6

Perhaps the most accurate method would be to get a set of calibrated IR filters and use them and a photodiode to find the wavelength that passes a particular filter.
Paul

7

Perhaps use a strip of an old CD as a diffraction grating and build a primitive spectrometer?

A simple servo to move a photodiode across the range of interest, calibrate with known IR
emitters?

8

I'm off to ask a new question now :wink:

Thank you all for your time.

9

Perhaps there is a section at StackExchange where people are with infrared sensor knowledge ?

10

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