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  1. - 7th December 2008, 19:24 #10
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    rmteo
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    Quote Originally Posted by Pedro Santos View Post
    Hello

    Capacitive sensing is another story, for that exists ic's from Quantum that work very well.

    Regards
    Pedro
    I am using a TS555 (CMOS version of the LM555) as a free-running oscillator at 1.1MHz. The touch buttons are routed through two 74HC4067 16-to-1 multiplexers to the TS555 as its timing capacitor (currently using only 24 inputs with 8 spare). The output of the TS55 is connected to TMR1 of the PIC which selects the inputs of the multiplexers and is also used to interface with 128x64 GLCD.
    Last edited by rmteo; - 7th December 2008 at 19:32. Reason: - wrong description.
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