Greetings all, I need help in determining if I could build a IR LED with the components I purchased.

I bought a 5W infrared LED that has requires a forward voltage of 1.4V and forward current of 1400ma.
Link: http://www.ebay.com/itm/1pc-5w-940n...629?pt=LH_DefaultDomain_0&hash=item2ebb4b4fc5

The LED driver I intend to use for the 5W LED requires an 12V DC input and outputs 3~10V DC voltage and 680ma current.

Link: http://www.ebay.com/itm/2pcs-5W-LED...762?pt=LH_DefaultDomain_0&hash=item1c23803fb2

Will this setup work? Also, if i want to control the brightness of the LED, could I simply stick in a potentiometer at the negative terminal of the LED?

Thank you!

 

That LED is 2-Watts, not 5-Watt. 1.4v x 1.4a = 2 Watts.

That driver won't work.

You need a BuckBlock:
http://www.ledsupply.com/0a009-d-v-1400.php
Just what you need; 1400mA supply from as low as 10v input.
You can dim the output using an 0v-10v input from an inexpensive potentiometer.