This?!
Kipkay you gotta be kidding me.
Please spare a moment to click the "6x laser" link in my signature under my post.
What you are looking at is a 200mW Bluray laser constructed off GGW laser diode, sled, with boost converter I made with LM3410X IC, in host that was provided by Bill.
My friend payed the diode $55 exactly.
I made the driver and the entire laser for $10.
Now, since I got the host for free, let's say that I needed to pay $30 to Bill to manufacture it.
That's $95, still cheaper than the "kit" ,
And since you (only one, presumably), have the first hand experience of these "150mW modules", would you please tell me , in seconds, the runtime of two button cells?
My laser uses 340mA at 4 V to boost 5V @ 190mA.
That's aproximately 5:50 hours of runtime on single battery charge, given that the cell is 2000mAh flat (says 2500 on it).
Completely focusable, and WELL HEATSINKED build for very long duty cycles.
That kit is anything but heatsinked and durable, not to mention nonfocusable, and I bet underpowered.
DIY lasers of this forum, this community I am proud to be a part of, unrarely surpass quality of very large portion of lasers which can be bought on lasers like your "laserDIY".
Can you see that you are wasting not only yours, but everybody's money who buys from that site?
Is that site funding you or what?
EDIT -
Hi Powered Blue Laser Diode 150mW
Ehh... PHRs are practically given for free these days, along with 1 Watt 445nm diodes which cost $35 these days... oops ...