How do I connect my components on my breadboard properly? - General Electronics - Arduino Forum

I tried connecting my components on the breadboard but it is wrong as the reading of my serial monitor keeps displaying 0. I'm trying to get the light bulb to light up within a certain distance, using the components shown in the photo. How do I go about with this? #include <math.h> // defines pins numbers const int trigPin = 10; const int echoPin = 9; // defines global variables long duration; int distance; void setup() { pinMode(trigPin, OUTPUT);    // Sets the trigPin as an Output pi

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