IR emitter/detecttor tutorial

[gamefreak]

In the tutorial near the end you said: "Often people cannot remember whether the black or the clear LED is the emitter or detector. This is the mnemonic I use to remember, dark colors absorb more light than clear, so the dark LED is the detector."

But i recently acquired a few pairs from Radioshack, on the back of the package it says the blue tinted one is the emitter and the white one is the detector, is Radioshack just a backwards electroics place or is this more common then I think?

Also, with no lights my detector is over 999 k Ohms

[Rebelgium]

Also, with no lights my detector is over 999 k Ohms

Your point being?
That's normal, and when you shine IR light on it it'll be a few ohms.

[airman00]

But i recently acquired a few pairs from Radioshack, on the back of the package it says the blue tinted one is the emitter and the white one is the detector, is Radioshack just a backwards electroics place or is this more common then I think?

Take a cell phone camera or webcam ( which can see IR light) and see which side is the emitter!

[Admin]

But i recently acquired a few pairs from Radioshack, on the back of the package it says the blue tinted one is the emitter and the white one is the detector, is Radioshack just a backwards electroics place or is this more common then I think?

hmmmm never heard of a blue tented IR receiver . . .

let us know your results from airman00's suggestion

[gamefreak]

according to my cell, radioshack tells the truth, and admin is wrong 

the blue one creates a pretty light on my cells camera

[Admin]

yeap, even the all mighty admin makes mistakes

but in actuality, robotics tech changes very fast, so what I say today may not be true next year . . . a few of my old tutorials are definitely outdated . . .

anyway, I updated that tutorial with your findings

[SmAsH]

yea you cant blame the admin blame technolodgy....right?