Hi everyone, I'm working on a circuit to provide a voltage pulse of variable duration in response to a rising or falling edge from a computer via a USB or serial port link. I am using this one-shot pulse to modulate a laser diode, and for the project I'm working on, I would like pulses of width about 1 ms, adjustable in something like
0.1 ms increments. Does anyone have any advice for a cheap and simple solution? I have been following chapter 8 of Horowitz and Hill, especially section 8.23, using an ICM7250 timer/counter but I can't figure out the resetting / triggering. If there is an easier way to do this or if someone can help me with what I already have, I would greatly appreciate it. Thanks!- posted
16 years ago