Hey guys,
i got a VISHAY Infrared Led (http://www.vishay.com/ir-emitting-diodes/list/product-81010/) but i dont get it work on my Arduino Mega.
What should i do? Wich resistor shall i use?
Thanks a lot for help!
You won't be able to run this diode at anything like its designed ratings directly from the Arduino - you'll need to use a transistor.
how should i do that? could you explain how to buil that wiring?
May anybody help me?
This really is basic stuff, the kind you learn from a little effort on your part.
You have given us almost no information whatsoever about what you are trying to accomplish so I am left only assuming your trying to pulse this led to mimic some sort of ir communication device.
Here is an example I quickly found using google (Google should always be your first reference when asking a question)
http://www.electronicsteacher.com/tutorial/learning-to-use-leds-and-transistors.php
joconcepts, the other guys are right, to run the LED to its full potential (read: range), you will need a transitor and a 5V supply capable of 100+mA.
But you should be able to get it to work without any of that. I have the a Vishay TSAL5300 (a similar LED to the one you have) and I was able to use it to control my TV. I connected it to a PWM pin 3 via a 270ohm resistor and it worked; the range, as expected, was tiny (~5cm). But that was more than good enough to test my program worked.
Edit: and if you are trying to recreate an IR blaster of a Hifi rack then 5cm is more than enough range (considering most blasters have the led touching the devices sensor)
you will need a transitor and a 5V supply capable of 100+mA.
Note that 100mA is the maximum continuous rating.
You'll probably be pulsing, so the instantaneous current could be much higher, depending on duty-cycle.
As always, check the datasheet.