Kindly thanks for uC Hobby, I try to submit this blog to them for the Arduino board give away, and qualify their requirement. Today my board arrive!

I will construct it after my mid-term presentation.
Let see will it useful for my project.Other than that, yesterday I bought another USB->RS-232 cable, since last time the one I bought is FAKE! This time the cable is from BAFO, and work fine! So now I can use it for receiving the value after A/D conversion of the knocking part.
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