The same - speaker version
Hi IONHUNTERS!!!
This is the same, but with speaker. C7 and R7 is for the audio tone, at more high cap, more bass. Select the conjuntion between the both resistor and capacitor, since 1 K and 120 nF, the nice for your ears. Mantain the 47 K in the base of the first transistor. In the piezosounder version, this resistor can be since 1 K. Diode is as protection.
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