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can bs2 detect voltage ? — Parallax Forums

can bs2 detect voltage ?

numpskullsnumpskulls Posts: 3
edited 2010-11-09 21:41 in General Discussion
i have an analouge voltage coming from my sound card in my computer, it will get to over 3vdc at this point i want to set a pin to "high" so i can turn on a LED(LED has his own power, i just want to complete the circuit). it would be cool to then turn the Led out when voltage falls under 3vdc. can this be done?
thanx in advance

Comments

  • LeonLeon Posts: 7,620
    edited 2010-11-09 21:41
    Use a comparator chip, such as the LM311. You don't need the BS2.
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