2 years later...

Author: careylzh

Bar-Mol Relationship.xlsx

@@ -0,0 +1,77 @@
+#define BLYNK_PRINT Serial
+
+#include <ESP8266WiFi.h>
+#include <BlynkSimpleEsp8266.h>
+#include <HP20x_dev.h> //flow sensor hardware library
+#include <Arduino.h> 
+#include <Wire.h>
+
+unsigned char ret = 0;
+
+// You should get Auth Token in the Blynk App.
+// Go to the Project Settings (nut icon).
+char auth[] = "410e39b34914406dbd0e6470ef4165eb"; //allows connection between hardware and Blynk Cloud
+
+// Your WiFi credentials.
+// Set password to "" for open networks.
+char ssid[] = "your wifi network";
+char pass[] = "password";
+
+unsigned volatile int flow_frequency; // Measures flow sensor pulses
+unsigned int l_hour; // Calculated litres/hour
+char flowSensor = 2; // Sensor Input
+void flow () // Interrupt function
+{
+   flow_frequency++;
+}
+
+void setup(){
+ Serial.begin(9600);  // serial data rate is set for 9600 bpa (bits per second) 
+ Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
+ pinMode(flowSensor, INPUT);
+ attachInterrupt(flowSensor, flow, RISING); // Setup Interrupt
+ HP20x.begin();
+ delay(100);
+      /* Determine HP20x_dev is available or not*/
+ ret = HP20x.isAvailable();
+ if(OK_HP20X_DEV == ret){
+        Serial.println("HP20x_dev is available.\n");
+    }
+ else{
+        Serial.println("HP20x_dev isn't available.\n");
+    }
+}
+
+BLYNK_READ(V5) //Blynk app has something on V5
+{
+ sei(); // Enable interrupts
+ delay (1000);      //Wait 1 second
+ cli();            //Disable interrupts
+ // Pulse frequency (Hz) = 7.5Q, Q is flow rate in L/min.
+ l_hour = (flow_frequency / 7.5); // (Pulse frequency) / 7.5Q = flowrate in L/min
+ Blynk.virtualWrite(V5, flow_frequency/7.5); //sending to Blynk
+ flow_frequency = 0; // Reset Counter 
+}
+
+BLYNK_READ(V6){
+    char display[40];
+    if(OK_HP20X_DEV == ret)
+    {
+        Serial.println("------------------\n");
+        long Temperature = HP20x.ReadTemperature(); //This is where the Temperature value is obtained
+        Serial.println("Temperature:");
+        Temperature = Temperature/100.0;
+        Blynk.virtualWrite(V6, Temperature);
+    }
+}
+
+BLYNK_READ(V7){
+        long Pressure = HP20x.ReadPressure(); //This is where the Pressure value is obtained
+        Serial.println("Pressure:");
+        Pressure = Pressure/100.0;
+        Blynk.virtualWrite(V7, Pressure);
+}
+
+void loop(){
+  Blynk.run();
+}