Piezo voltage Peak Detector & Hold circuit.

Discussion in 'The Projects Forum' started by Miro2424, Jan 3, 2010.

  1. Miro2424

    Thread Starter New Member

    Jan 3, 2010
    1
    0
    Hello, I need your help building a circuit. I would like to build a MIDI guitar. I have an Arduino board that will be programmed to output MIDI codes to a PC sound card or a Sound Module. The input will be 6 piezos attached to 6 strings and other digital switches. The problem is to have a circuit that will detect the piezos peak voltage and hold it until it is read by an analog input and then it needs to be reset. I tried to simulate the following circuit; http://www.pjrc.com/tech/midi-drums/sch-ana1.html
    on the popular java applet from the following page;
    http://www.falstad.com/circuit/
    but it does not seem to work. Please help. I'm including my circuit diagram, just import it by pasting into the Circuit Simulator java application.
     
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