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I can't find my original schematic but here is a simple tone generator you just need to work out the resistors to get the freq righthttp://hop.concord.org/s1/core/s1ca1.htmlFrequency is about 1.44/(R1 + 2*R2)C
I can't find my original schematic but here is a simple tone generator you just need to work out the resistors to get the freq right
http://hop.concord.org/s1/core/s1ca1.html
Frequency is about 1.44/(R1 + 2*R2)C
