18 lines
293 B
C
18 lines
293 B
C
#ifndef Sketch_h
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#define Sketch_h
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// HC-SR04 Ultrasonic Ranging Module has 4 pins
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// HC-SR04 pin Vcc (needs 5v)
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// HC-SR04 pin Trig (3.3v input = Merkurboard output)
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#define TRIG_PIN 19
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// HC-SR04 pin Echo (3.3v output = Merkurboard input)
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#define ECHO_PIN 20
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// HC-SR04 pin Gnd
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#endif
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