So I have created this project to have an LED blinking at a constant speed whenever the program is running. The first LED (green) will blink faster and faster the closer an object gets to the sensor. The second LED (Blue) should be blinking constantly. The LED (white (is referenced in code as blue)) is only blinking when my ultrasonic sensor has something in range. I would like to make it so it blinks no matter the circumstances. This is probably something obvious Im missing - excuse my noob-ness NOTE: if the picture of the circuit isnt correct (pins not being correct) know that it is correct in real life, this is what I get for doing a quick mock up and post at 1:00 AM
#include "DHT.h";
#define DHTTYPE DHT22 // DHT Type is DHT 22 (AM2302)
#define DHTPIN 7 // DHT-22 Output Pin connection
#define trigPin 5
#define echoPin 6
#define beepPin 12
#define scalingfactor 10
#define blueLed 11
#define ledPin2 10
float hum; // Stores humidity value in percent
float temp;
float soundsp;
float soundum;
DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor for normal 16mhz Arduino
int centi = 0;
const long erval = 500;
unsigned long previous = 0;
unsigned long lastduration = 0;
unsigned long duration = 0; //time it takes for sound to return
unsigned long maxtime = 2000;
unsigned long i = 1; //variable to determine actual distance
unsigned long time2 = 0;
unsigned long time1 = 0;
void setup() {
Serial.begin (9600); //open monirot channel
dht.begin(); //start temp and humidity sensor
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(beepPin, OUTPUT);
pinMode(blueLed, OUTPUT);
}
void calculate(){
// Calculate the Speed of Sound in M/S in accordance with temp
soundsp = 331.4 + (0.606 * temp) + (0.0124 * hum);
// Convert to cm/us
soundum = soundsp / 10000;
}
void logdistance() {
digitalWrite(trigPin, HIGH); // send sound signal
delayMicroseconds(10);
digitalWrite(trigPin, LOW); // stop sound signal
duration = pulseIn(echoPin, HIGH); // listen for sound signal
centi = (duration* soundum)/2; // determine delay of sound signal in one direction
maxtime = scalingfactor * centi; // change max time in accordance to the distance of the previous object
}
void beep() {
digitalWrite(beepPin, HIGH); // turn on the beep pin (or LED pin)
delay(60);
logdistance(); // run the log distance function again so we get accurate data
if (time2 - time1 < 30) { // delay based on how close an object is
delay((60 - (time2 - time1)));
}
digitalWrite(beepPin, LOW); // turn off beeper (or LED)
i = 1;
while (1) {
if (i % 60 == 0) {
logdistance(); // run my log distance funciton
}
delay(1);
++i; // add one to i to report that we have recorded the distance
if (i >= maxtime) { // dont report distanc if sound took longer than max time to return
break;
}
}
}
void BlinkBlue (int interval){
static long prevMill = 0;
if (((long)millis() - prevMill) >= interval){
prevMill = millis();
digitalWrite(blueLed, !digitalRead(blueLed));
}
}
void temps(){
hum = dht.readHumidity(); // Get Humidity value
temp= dht.readTemperature(); // Get Temperature value
}
void loop() {
BlinkBlue(500);
beep();
temps();
calculate();
//print results
Serial.print (duration);
Serial.print("c. ");
Serial.print(centi);
Serial.print(" ");
Serial.print(temp);
Serial.println(" ");
}
