I want to check my understanding on how to use digitalWrite for 5V and Grd and why this code isn't working. This is for the Makeblock sensor Consider the image here which says to plugin a wire to 5V, Grd and a signal pin. My code does the following #define h 22 #define l 24 #define sig 26 vo…

Ultrasonic, 5V, Grd and Sig

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