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How to Connect a Sensor with Audio Input and Output

Step 3Preparation: Power from USB

Preparation: Power from USB

To obtain power for sensor (the circuit does not need power), you can use 5v (most sensor work with this voltage) from USB. Cut a standard USB cable and solder DC connector to voltage and ground sides (usually red is for voltage, and black is for ground, but you should check the correct line with multimeter).

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