mlt57sooner
New Member
I have set up the 555 timer to create a 40 KHz signal, now I would like to send out the 40 kHz signal in 100 microsecond bursts. I have set up my microprossor to turn the 555 on for 100 microseconds then turn it back off for 100 microseconds and back on and so forth. I have tried connecting the microprossor to the reset pin of the 555 but the signal does not come out very clean. The pulses seem to run together. When I just connect the microprossesor to the power so that it turns the chip on and off you can see the pulses on the scope but I know this is not a good way to create the signal. Any ideas why the reset pin doesnt generate good visible pulses?