Wiimote Project

Hardware Support => IR Pens => Topic started by: Spurtus on January 14, 2008, 02:12:40 AM

Title: IR Led Specifiaction
Post by: Spurtus on January 14, 2008, 02:12:40 AM
firstly well done Johnny Lee!.. great stuff, have you had any job offers from Ninentdo yet? I'm a game developer and I'm on a mission to get his working on my laptop as a first port of call.

However, the glasses require a few questions...

what type of IR Leds should I purchase?
what voltage to power them with? Resistor or potentiometer?
is it worth doing the leds at either side of the glasses in clusters?

Further, where might I get something like this in the UK? The electronics superstore in the UK is www.maplin.co.uk but seems to have only one type of 950nm IR Led.

Perhaps there is a specification docs on the standard sensor bar that give clues?

Best regards,
Spurtus.
Title: Re: IR Led Specifiaction
Post by: troy59 on January 16, 2008, 10:09:57 AM
same thing with me, i just bought 100 150 ma IR leds from a digi key catalog, but i was wondering if i needed and resistors, or how much voltage i needed. If you could tell me, that would be great
Title: Re: IR Led Specifiaction
Post by: atomriot on January 16, 2008, 10:36:55 AM
ledcalc.com is a good place to check that

it depends on how many leds are in your pen, and what their forward voltage is.

i have a 1.2v LED that i have inline with just 1 battery. its max forward voltage is 1.8 so its able to run just fine.
Title: Re: IR Led Specifiaction
Post by: troy59 on January 16, 2008, 10:37:55 AM
it is 1.5v for one and the max is 3v i believe
Title: Re: IR Led Specifiaction
Post by: troy59 on January 16, 2008, 10:45:07 AM
hey, thx for the site
Title: Re: IR Led Specifiaction
Post by: holyone2 on January 27, 2008, 08:13:56 AM
I am also in the UK and also unsure as what is the best IR speced LED to purchase from experienced user's experience?

Thank you!
Title: Re: IR Led Specifiaction
Post by: Demonic69 on January 27, 2008, 07:02:50 PM
In the UK Maplins or Farnells (online) are best.
I bought 2x YH70M from Maplins and run them parallel with one AAA battery, no resistor and they work just fine.