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Thread: Should I debounce this...?

  1. #1
    Join Date
    Aug 2007
    Location
    Indianapolis, IN
    Posts
    196

    Default Should I debounce this...?

    If I wanted to add a "dead-man's pedal" to a laser show - that is a footswitch wired to the TTL blanking line (foot off = laser off) - should I be worried about debouncing the switch in the pedal?

    I have to demo a laser harp to the general public, and I only want the beams on when I stand on the switch.

    Steve

  2. #2

    Default

    No need to debounce it but I would make sure the TTL input has sufficient static protection to take a long lead to a footswitch.
    If in doubt a bzx85c5v1 zener on the TTL input should suffice.

    Rgds,
    Robin

  3. #3
    Join Date
    Jan 2007
    Location
    Florida
    Posts
    4,382

    Default

    The bounce in a spst or even dpdt mechanical switch is only a few ms x 2-3. Wouldnt cause any eye damage unless talking about direct cornea focal contact of 500 mw or so would be my best guesstimate.

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