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The light/dark sensor on that page is pretty much what you want.
Basically the op amp will be a comparator. When the voltage difference between pins 2 and 3 is greater than 1.2 (if I remember) then pin 6 outputs. Single power supply is all that is needed with this setup.
Dave
Always wear safety glasses while programming.
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Ive only just got past the bit about boosted output. Some things are making sense but i think its gonna take a while to sink in properly.
Would i be right in saying an op amp is very similar (if not the same) as a MAX485 receiver? Now i think about it the MAX485 does have opamp type symbols in the datasheet
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You know I always make dead certain first, before I pull that trigger, on my de-soldering gun to remove MAX485s. Gotta be properly grounded, because they're very static sensitive.
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I hadnt notice that. Im sure the ones ive got must have had pleanty of static with all the things they have been near and they are still working for the moment. One of them even got shorted out when the wires on the biasing resistors accidentally touched but even that still works fine.Originally Posted by T.Jackson
For now im working on breadboards so soldering/desoldering hasnt been a problem
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Maybe...I guess so...
The 484 is comparing a voltage difference.
Dave
Always wear safety glasses while programming.
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Well you should know Dave, you're the one with the Phd.
What does your psychoanalysis equate to?
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I would say mine is more "I guess so" while my wifes is "maybe". I used them both so I would not have to be gender specific. Gotta keep the Freudians happy.
And that is
MR. Post Hole Digger
Last edited by mackrackit; - 23rd October 2008 at 16:33.
Dave
Always wear safety glasses while programming.
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I usually rely predicate logic mostly. This is enough for me, it's all I need.
Anyway, I'm off to go and clean that gun of mine, gotta a lot of work ahead of me.
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Keeping up with the Freud thing.
I bet mine is bigger than yours
Dave
Always wear safety glasses while programming.
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