2AA batteries enough?

[MajorLim]

First, can i say hello to everyone here. ":bowdown:HELLO" :bowdown:
I've been lurking around here for a few weeks, filling my head with as much knowledge as possible so i can avoiding having too many questions when i start my first build.
I am thinking of building a red burner pointer, and have got all the bits i need to build it, and ive got a torch host that takes 2xAA but i'm not sure if 2xAA's will be enough to power this board?

LM358 Constant Current Driver, 3.5 -5.0V - V2 - Detailed item view - OdicForce Lasers Online Shop

other than that i think i know what i'm doing? :wave:

I have to say, this forum is great! it has filled quite a few hours over the last few days.
Also, random link: Homemade Resistor Disc - Or How to Make Any 6v/7.2v Mod into ~5v Modularly

Im thinking of trying this. just wondered what people think...

 

[MajorLim]

Does anyone know if that driver can run off 2 AA batteries? I may just test it myself...well, I will test it anyway.... but. Well you know...

 

[djQUAN]

It's the same as those used in red and green pen lasers. Output current at the high range will be limited though

 

[Blaster]

Your better using a dummy AA battery spacer and a single 3.7v lithium ion AA battery higher voltage will do the trick. i do it with my AA eBay pens and AAA eBay pens no problems and you get higher output about 15% at least

 

[MajorLim]

That's brilliant! :wave:
Thanks guys. I've noticed the axis housing is about the same height as a AA, so I reckon I can work the length into the battery compartment. I don't know how yet as I broke the spacer I made to hold the housing...

bah! I will work it out.

Thanks again anyway. I'll post some pics when I bodge it all together...