However, the dtmf display thingie appears to work.
After I'd extracted a remarkably duff 22uF electrolytic that one or more of my especially esteemed customers had previously screwed...
However, the microphone I was intending to use seems to lack almost everything in the sensitivity to sound stakes, so I've pressed a piezoelectric sounder into action to replace it.
After I'd extracted a remarkably duff 22uF electrolytic that one or more of my especially esteemed customers had previously screwed...
However, the microphone I was intending to use seems to lack almost everything in the sensitivity to sound stakes, so I've pressed a piezoelectric sounder into action to replace it.
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