cheeseslice
Member
Hey,
I started a new thread a couple of days ago for extending an IR remote and it was suggested by a few smart people that using fibre would be the best idea.
It got me thinking about if I could use this in a project that I am about to start (once my parts arrive from china) so I just wanted to check to see if I'm going along the right lines.
Basically what I have is a long tube 60 inches or so that needs to be aligned exactly to a fixed reference point about 50ft away. I have made a smaller tube/casing that will fit snugly inside this tube and I have ordered a 5mw red laser which i am going to place inside the casing.
The problem I had was ensuring that the laser was going to be dead centre,even a small bit off and it would mess things up over that sort of distance. So what I had thought of doing was putting a cover over the other end of the 60inch tube with a hole dead centre and some sort of lens to focus the laser.
Would it be a better idea to run fibre from the laser to the end and have it glued to a cap in the centre, that way I wouldnt have to build the laser inside such a small casing. the tube is only 14mm in diameter.
Would the laser lose any of its intensity going through the cable? The reason I'm worried about this is that this alignment might need to be done outdoors up to 100m, I don't even know if this laser I have bought will work to that distance in daylight, but I'm hoping it will.
Another part of this project is using a 433 mhz transmitter and receiver to turn it on and off which would mean that I could just fit everything in the one box and build some sort of interface to attach the fibre cable to the laser.
I started a new thread a couple of days ago for extending an IR remote and it was suggested by a few smart people that using fibre would be the best idea.
It got me thinking about if I could use this in a project that I am about to start (once my parts arrive from china) so I just wanted to check to see if I'm going along the right lines.
Basically what I have is a long tube 60 inches or so that needs to be aligned exactly to a fixed reference point about 50ft away. I have made a smaller tube/casing that will fit snugly inside this tube and I have ordered a 5mw red laser which i am going to place inside the casing.
The problem I had was ensuring that the laser was going to be dead centre,even a small bit off and it would mess things up over that sort of distance. So what I had thought of doing was putting a cover over the other end of the 60inch tube with a hole dead centre and some sort of lens to focus the laser.
Would it be a better idea to run fibre from the laser to the end and have it glued to a cap in the centre, that way I wouldnt have to build the laser inside such a small casing. the tube is only 14mm in diameter.
Would the laser lose any of its intensity going through the cable? The reason I'm worried about this is that this alignment might need to be done outdoors up to 100m, I don't even know if this laser I have bought will work to that distance in daylight, but I'm hoping it will.
Another part of this project is using a 433 mhz transmitter and receiver to turn it on and off which would mean that I could just fit everything in the one box and build some sort of interface to attach the fibre cable to the laser.