how to make lux meter??

[abdul samad]

hi i want to know how to make lux meter using photodiode and being cheap as well.It should match the eye resolutions for any wavelength of light.



Answer me as soon as possible....

 

[abdul samad]

please would anyone like to answer it?????????????

 

[stevez]

Somehow I think that any instrument that matches the response of the human eye is going to be less than simple and expensive.