Detect fast movement using photodiode

[Acetronics2]

From that datesheet, it said that the circuit will not be sensitive to changes in light as the source ages, this means saturate right?

That means I can't connect IR TX continously?

Hi,

That means aging will modify BOTH sources ... but "saturate" means the sensors ( not the source ...) cannot make any difference in light changes.

just as if you look straight at the sun ... you can't distinguish anything more in the sky , even in front of you !!! ( the model plane you should fly is a "good" example here ... lol : little chanche for you to keep it in the air ... )

Alain