Page 138 - Programming the Photon Getting Started With the Internet of Things

diagram for this experiment can be shown in Figure 6.14.

Figure 6.14 Breadboard layout diagram.

Let’s take a look at the program code that we will use on our Photon board:

#include "HC_SR04/HC_SR04.h"

double cm = 0.0;
double inches = 0.0;

int trigPin = D4;

int echoPin = D5;

HC_SR04 rangefinder = HC_SR04(trigPin, echoPin);