Viesturs, if your laser seems too bulky - have you tried transporting the beam to the work head via optic fibres? In the laser division of my former company, we had several powerful (many, say, 50 watts output) gold vapor ans other lasers that weighed about a ton each and filled a whole labratory room. The beams were focused by a microscope objective and transported all the way through the building by a single glass fibre (later on by plastic wires, try a guitar string!) into the surgery room. Sometimes the fibres had to be cut off as the beam burned their light entrance area. Peter
Viesturs La-cis schrieb: > 2012/1/28 Rafael Skodlar <ra...@linwin.com>: > >> Of course that won't work with most if not all the suggestions I've seen >> so far. If I understand it correctly, your "laser" already has a circuit >> to drive it at reasonable current to do it's magic. >> >> Circuit I suggested earlier was under assumption you have a bare laser >> diode connected to it. You cannot daisy chain circuits one after another >> and expect laser to work properly. >> >> Relays are out of question IMO because they are too slow mechanical >> devices with many other drawbacks for this application. I see no reason >> to bring in solid state relays into the picture either. You are not >> driving high voltage stuff. >> >> You either need to modify your PCB that came with the laser diode or >> build a new circuit. Maybe you can reverse engineer that PCB and use one >> spot to inject signal from the EMC side. >> > > Ed, Kirk, Rafael, thank You! > > Given my lack of skills in electronics, I think that interfering and > modifying the pcb that comes with laser is the last thing I want to > do. > Here are some pics of the laser and its pcb I took late in last night > with my phone (it was late enough that I forgot to upload them > yesterday evening): > http://picpaste.com/2012-01-27_21.54.59-QzJqS24n.jpg > http://picpaste.com/2012-01-27_21.55.16-mx4U2GiU.jpg > http://picpaste.com/2012-01-27_21.55.36-wtANcKHw.jpg > http://picpaste.com/2012-01-27_21.56.28-ySpITI8d.jpg > > I think that I will try the "use a relay" approach, because: > 1) it is simple enough for me to do it; > 2) it does not require modifying existing laser's board; > 3) it will be fast enough for me, because I am going to use the laser > in a "a la milling" fashion - move laser along the line to be burned > instead of moving it back and forth and switching it on, when > necessary, because: > a) the laser is weak, so by definition it can't burn quickly; > b) machine is heavy and relatively slow, compared to "normal" laser > engravers, so it would not be able to handle very powerful laser > anyway; > c) g-code generation - I have no idea, how to generate g-code for > "normal" laser engraving, but I know, how to do it for "a la milling" > style. > > > BTW client was happy, when he saw the first hand-burned lines in the > wood that I managed to do last night in that small moment, when the > laser was working... > > Viesturs > > ------------------------------------------------------------------------------ > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
