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Simple Optical Switch


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Hello eemaestro

  A 555 is use in a lot of ways, if there is a switch involed the 555 could used as a timmer or pwm for a motor. Post the Projects So we know what your looking at.
                                                  have fun
                                                    gogo

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You've explained that when pin2 goes LOW (a diode drop above ground) when the light to the phototransistor is blocked, the output goes HIGH.

I was just wondering if the IC's purpose was to "debounce" the sensor output, i.e., remove transient fluctuations in voltage level.    Now I understand that that is indeed the case.

Thank you for your explaining it to me.

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