MCP23016 I/O expander

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  1. - 23rd October 2005, 17:51 #20
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    Quote Originally Posted by NavMicroSystems
    Robert,

    I'm sorry, this still doesn't make any sense to me.
    Why use opto's when you aren't isolating anything?
    Ralph,

    The optos were used only as a means of being able to switch between more than 8 MCP23016. I can easily activate the MCT6 I wish with a single pin from the PIC. Don't look for any fancy reasons, there aren't any.

    It was the only idea I could come up with the have more than 8 MCP23016 share a common SDA line (since I don't know how to have more than 1 SDA line per PIC).

    Robert
    Last edited by Demon; - 23rd October 2005 at 18:00.
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!
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