Wiimote Project

Hardware Support => IR Pens => Topic started by: JesseHNTR on February 19, 2008, 05:48:23 PM

Title: N or AA battery/battery holder
Post by: JesseHNTR on February 19, 2008, 05:48:23 PM
Should I buy a AA or N battery holder, Is their an actual difference, and if I get a AA do I need a resistor?
Title: Re: N or AA battery/battery holder
Post by: dice on February 19, 2008, 07:41:46 PM
Only real differences between AA, AAA, or N is the physical size and how long it will provide power.

all of them are 1.5Volts which if you use the more common IR LEDs you will not need a resistor. If you use more than one you will need a resistor.

Hope this helps
Dice :)
Title: Re: N or AA battery/battery holder
Post by: imarzouka on April 02, 2008, 03:34:24 AM
You always need a resistor to limit the current. Even if the LED forward voltage is equal to your battery voltage. Use this calculator: http://ledcalculator.net it's very nice.