Recent content by Dusk

I along with a friend connected the laser to the voltage source using the 82ohm resistor in series with a variable resistor, adjusting it from very low voltage across the diode to the typical 1.9 volts. We managed to get it to light without blowing it. However, as I suspected it doesn't give...

I've already seen it work with a red laser pointer, at the moment I'm just trying to get a beam from a laser we got from a CD player. I found her some specs: http://www.rohm.com/products/databook/ld/pdf/rld78mpa1.pdf I'm going to attempt to put 45mA and 1.9V through it from a 5.6V power...

What kind of voltage would you put through a laser like one taken from a CD player? On that same not, what is the operating current? I managed to find an broken CD player, and I don't want to destroy the laser diode for fear of not being able to find another one any time soon.

Not seeing the dot IS the point. Another point is that, as much as possible, I'd like to make it from scratch. That's why I asked if I could use the laser from a CD player or something similar. Just buying one takes half the fun out of the idea.

The Wiimote Whiteboard is an application that allows you to connect the Wiimote to a PC via a bluetooth connection and along with an IR light source like an IR LED (or I'm hoping an IR dot on a screen from an IR laser pointer) is able to simulate touch-screen functionality. YouTube - Low-Cost...

Greetings, I wish to build an infrared laser pointer to be used with the Wiimote Whiteboard application. I want it to be able to emit a reasonably small infrared dot from about 3 to 4 meters onto a matte surface that can be picked up by the infrared camera in the Wiimote. Being new to working...