Recent content by poseidon05

How

What do you mean by reverse the driver?

If I make it case positive then the positive current from the battery would go straight to the diode without going through the driver. Wouldn't that kill the diode?

I'm trying to build a 505nm pen pointer and am using a sharp gh05030c2lm diode, which has the positive pin as the case pin. The problem is it's in a brass heatsink which touches the interior of the host, which is negative. So instead of the positive current going into the diode, it just escapes...

I've tried with the spring both ways, and without the spring, same result each time. I think the problem is that there's a long narrow tube between the diode and the lens, and the diode's output hits the walls of it before reaching the lens. But I've seen videos of this exact casing and the beam...

yeah its flush

Those are too big since I'm trying to build it into a pen host.

I am new to building lasers and need help. I am trying to build a 505nm pointer. I got a 505nm35mw diode and a laserland 6x10mm focusable diode housing with plastic lens. The problem is that if I focus the beam down, there is a lot of artifacts around the dot (see pic). The smallest I can focus...