Board/SSL/SSL1027-dat/55-53-15-09-08-2023.png
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+# SSL1027-dat
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+
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+
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+## Pin Configuration
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+
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+* GND - GND
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+* VCC - VCC, 3-12V, DC, use 5V directly is fine
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+* OUT - output, when detect certain frequency output TTL low
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+* FIN - Identifier frequency input, this can input the frequency for identifying, be aware the amplification should lower 0.2V
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+* FOUT - Identifier frequency output pin, this pin output the identifying frequency which is set
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+* ROUT - Amplifier real time output pin, detect audio amplifier signal real time output.
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+
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+## Note:
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+* make sure VCC and GND is not reverse
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+* Use adjust resistor, make sure the indicating LED off and then start to use, since there is noise in the environment, so you have to set the noise to a small frequency area.
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+
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+
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+## Schematic
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+
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+![](55-53-15-09-08-2023.png)
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+
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+
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+## Legacy wiki page
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+
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+https://w.electrodragon.com/w/LM567
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+
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+
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+## Demo
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+
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+- https://twitter.com/electro_phoenix/status/1497890295253389314
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+- https://t.me/electrodragon3/215
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+
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+
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+## Old Logs
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+
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+https://twitter.com/electro_phoenix/status/1001750412347650048
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