Recent content by robert miller

  1. robert miller

    555 trigger circuit

    Just realized its april fools day. got to prank some one today. or get pranked? My spelling is a joke.
  2. robert miller

    555 trigger circuit

    George: I tried the cap and also using NPN. Unfortunately neither helped. I am going to try using a 741 opp amp to see if this will work. I believe that my very small voltage gain from the receiver will make the opp amp flip and trigger the 555. thats my guess and iam sticking with it...
  3. robert miller

    555 trigger circuit

    George: I tried a cap and that did not work because there are no AC type signals involved with this circuit. The wireless receiver has a 1K circuit resistance that drops to 0 ohms when triggered. When hooked to the 555 at pin 2, the circuit pulls the voltage on pin 2 below trigger point and...
  4. robert miller

    loving life and all its challenges.

    loving life and all its challenges.
  5. robert miller

    555 trigger circuit

    Trying to hook a receiver to my mono 555 circuit and i will not drop the voltage to trigger. the timer. Any ideas on how to drop the voltage on pin 2 from a electronic grounding pulse that will start the timer?