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Nettigo: Audio modem for smartphones [SparkFun DEV-10331]
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How to hook up a 3.5mm audio jack to a circuit to read in analog input - General Electronics - Arduino Forum
How to hook up a 3.5mm audio jack to a circuit to read in analog input - General Electronics - Arduino Forum
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9V Battery DC Jack [9V-Battery-DC-Jack] - US $0.18 : HAOYU Electronics : Make Engineers Job Easier
Schematic of wiring diagram for the Arduino PWM setup. Component... | Download Scientific Diagram
Audio input via Headphone Jack - Audio - Arduino Forum
Read 3.5mm audio jack volume values with Arduino UNO. - Audio - Arduino Forum
