I am wondering how "fast" I could switch off a laser.
I have a laser diode that is controlled by a mosfet
... instead of LDR, what other options are there?
I am wondering how "fast" I could switch off a laser.I already have another post with some information in it, how ever this is something that is slightly different from that all though it has to do with the same topic.Let's say for instance I had an arduino, and off this arduino I have a laser diode that is controlled by a mosfet, this laser diode shines on an LDR. Now let's say that some thing was to break that beam. The LDR would send its signal the arduino that the beam has been broken. Which would I turn trigger the mosfet to turn off. I will be ordering some parts soon to test this theoretical idea. But would some one have an idea of how much time this would take?I was curious about reflectivity, for example if some one were to walk In front of the beam and at it reflected off their clothes into some ones eye. Granted it would be a classification type 3r eye safe laser. So I don't think it would really be an issue but. Also if some one has a better solution on how I could effectively fast switch the laser off I'm all ears (or in this case eyes)Just for curiosity sake
AWOL, thanks for your input, instead of LDR, what other options are there?
Also the reason I would like the laser to rapidly turn off is more of a safety feature than anything.