Hi all
I'm planning to build a laser harp - a small one, for indoors use. And I have two questions:
1. https://dx.com/p/30mw-532nm-green-laser-module-3v-11-9mm-26888 - does anybody have any experience with those modules? Do they give off a visible beam in a darkened room? Are they up to spec?
2. I'm planning for my harp to have an "open" design - i.e. the beams are supposed not to stop at the upper frame. How is it usually done? From what I've found, it seems like I'd need a piece of a translucent material which will brighten up while a beam is passing through it, and a photoresistor next to it. If it's so, are there any certain properties that I should be looking at, or will any piece of glass do?
I'm planning to build a laser harp - a small one, for indoors use. And I have two questions:
1. https://dx.com/p/30mw-532nm-green-laser-module-3v-11-9mm-26888 - does anybody have any experience with those modules? Do they give off a visible beam in a darkened room? Are they up to spec?
2. I'm planning for my harp to have an "open" design - i.e. the beams are supposed not to stop at the upper frame. How is it usually done? From what I've found, it seems like I'd need a piece of a translucent material which will brighten up while a beam is passing through it, and a photoresistor next to it. If it's so, are there any certain properties that I should be looking at, or will any piece of glass do?