v3 of the airsoft bomb prop
WeMOS 2560
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Buzzer: Digital Pin 9, GND
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Button 1: Analog Pin 0, GND
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Button 2: Analog Pin 1, GND
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Button 3: Analog Pin 2, GND
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Button 4: Analog Pin 3, GND
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LCD SDA: SDA, Digital Pin 20
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LCD SCL: SCL, Digital Pin 21