Time delayed output?

LarryinFreeport

Time delayed output? How can I get my Stamp to trigger a 555Timer (or something similar) and have it
produce an output, say, 1-100ms later·(based on a potentiometer setting)? I can't seem to find a circuit to do this. Thanks, LarryinFreeport·

Post Edited By Moderator (Chris Savage (Parallax)) : 8/6/2005 2:24:46 AM GMT

KenM

http://www.schematica.com/555_Timer_design/555.htm
and the stamp interface is attached.

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Ken

knightofoldcode

Also, just to make sure you know this, the 555 is triggered when the trigger is pulled to ground, and the trigger should remain high, or 5V+.


Knight.

LarryinFreeport

Thanks, I'll give it a try!

LarryinFreeport

Thanks for the suggestion, but I still can't seem to get it to do what I want. Attached is a timing diagram of what I am looking for. Any suggestions?.... LarryinFreeport

KenM

What is the time delay you are looking for between stamp output and 555 output?
Does the stamp output trigger more than just the 555?

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Ken

Philip Gamblin

If the 555 is used for thetiming delay, why bother with the Stamp. Use RCTIME to read the the pot, wait for a delay based on the value of the pot, then do what you want.

LarryinFreeport

The timing would be in the order of 50 to 150 ms. The stamp is reading a number of inputs and performing some logic on them. When the condition is right, the stamp output would change state (go from a 1 to a 0 or vis versa). This output would trigger another external piece of equipment. The operation of that device would take between 50 & 150 ms. I am trying to simulate that external device with the "timer"....