I recently received a laser module (http://www.sparkfun.com/products/9906). I got it and it has a spring on one end which I assume is either V+ or ground, but I can't figure out where the other is.
The brass housing is the other contact point.
I recently received a laser module (http://www.sparkfun.com/products/9906). I got it and it has a spring on one end which I assume is either V+ or ground, but I can't figure out where the other is.
The brass housing is the other contact point.