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Thanks for all the info guys! I guess I'll try it with the mirror first, it would make things a lot easier. I was going to mount the mirror inside a small section of PVC pipe to protect it and spray a bunch of bug repellent all over it to keep the spiders and other bugs out. So is there a...

This was just a standard mirror and you could see the beam being absorbed in the glass and causing it to glow slightly. That is a good point, I will have to see if I can order a front surface mirror, I think that could be a dramatic improvement. Thanks!

Thanks for the info guys, that do it yourself project is exactly what I need for the receiver and I think mounting it in the black PVC as Speedy suggested is the only way it might work. I tested a 5mw laser today and the beam held pretty tight out to about 150' and would probably even ready @...

Thanks for the replies and info guys! Firelaser, thanks for looking that up! That is what I'm hoping to build, but something with additional range. That system is rated for 70' outdoors and I have to go about 200'. I could make that work if I strung 3 of them together and buried a bunch of low...

Thanks for the reply! Yep, that is pretty much what I need to build, except the laser and the receiver would both be on the same side. So in all actuality I'm probably close to 400' in distance for each. I was hoping to use an IR system so as not to attract them to it. As far as safety goes...

Hello Everyone, I've done a bit of searching and I'm not finding too much info on exactly what I need for my project. I have a pond behind my house and 3 small daughter (2 of them 2 year old twins). Basically I want to build a system that would alarm if they cross the beam and I would arm it...