Speech Recorder (ISD2560)

  
The 2 pushbuttons = S1: Start/Pause. S2: Stop/Reset. If you want to play your message, put S3 at Play. Then push S1 to start playing and again to pause. If you want to delete your message press S2 twice. If you want to record a message put S3 at Rec. Then push S1 to start and S2 to stop.
Speech Recorder (ISD2560) - schematic

PARTS LIST R1 = 1k R2 = 470k R3 = 10k R4 = 5k1 R5 = 4k7 R6,7 = 100k R8,9 = 1M R10 = 10R C1-10 = 100nF/63V C11 = 47nF/63V E1,4 = 220uF/16V E2 = 4u7F/16V E3 = 22uF/16V IC1 = ISD2560 + socket IC2 =LM78L05 IC3 = LM386 + socket MIC = Condensator microphone S1,2 = Pushbutton (S1 = Start and Pause. S2 = Stop and Reset) S3 = Change-over switch H?jttaler = 8R speaker



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