Hi all,
I've spent a lot of time reading posts in this forum (and elsewhere) and still having trouble deciding on what to buy.
I want a 532nm pointer for use as an astronomy demonstrator, both in the city and at dark sky sites.
I want reasonably good power, and don't want to buy cheap...
Hi,
I'm *not* very savvy wrt electronics, so please keep your responses simple!!!! I'm an astronomy demonstrator and have got a 30mW green laser module which I want to use to make a pointer. It has 3 wires coming from the board: a red, a black and a yellow. I guess the red and black are +ve and...