Hi people,
I have an 1992 Synrad laser. I need a PWM controller to set the intensity. I'd like something that has an input that can be controlled by a pin on the Parallel port of a computer, but will be happy with a manual control that I can set for intensity.
Because the laser is so old Synrad no longer has any info on it. I have made it burn stuff by using a AA battery on the intensity line so II know it is working now.
I am retired and on a tight budget but thought I may be able to use this to engrave stuff and a make a few bucks on the side. It was given to me because the laser was dead, but I now have it working albeit at only one output level.
Synrad did say it was controlled by a PWM signal. From their controller manual...
1us tickle pulse at all times to keep the laser on the verge of lasing. Output voltage is 0-5vdc. Output current 100ma through a 50ohm CMOS driver I get the impression that anything above a 2us pulse will drive the laser on.Can anyone assist me here with a kit or schematic or something, anything?
Thanks in advance.
Dave