Hi all, I was wondering if anyone can shed any light on this issue, I don’t think its too big maybe a few lines of code that perhaps need changing but not I’m too sure… I have looked through other topics on the forum as well as online but couldn’t work out how to fix it, I believe it could be a timer issue, I’ve been stuck on this one for a while…
The Project
Eventually, I am looking to make a water sensor that, will tell me the PH, ORP, temperature and turbidity of a water sample, hence the other lines of code, however at this moment in time I’m only testing the ORP section of the code.
The Issue
I have data posting to the mobile application, however, it is not responding/ updating, as it should be, i need it to be updated once every 5 seconds or 1 second if possible, but it just stays on a single value.
Im only looking for help or guidance, as im trying to learn too, thanks 
Setup
• Hardware model: NodeMCU/ Esp8266 board
• Smartphone OS: Android
• Server: Blynk server
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h> //Blynk
#include <Wire.h>
#include <Adafruit_ADS1015.h>
#define VOLTAGE 3.30 //system voltage **CHANGED FROM 5 TO 3.3** ORP
#define OFFSET 1000 //zero drift voltage
double orpValue;
#define ArrayLenth 40 //times of collection
//#define orpPin 1 //orp meter output,connect to Arduino controller ADC pin
int orpArray[ArrayLenth];
int orpArrayIndex=0;
double avergearray(int* arr, int number){
int i;
int max,min;
double avg;
long amount=0;
if(number<=0){
printf("Error number for the array to avraging!/n");
return 0;
}
if(number<5){ //less than 5, calculated directly statistics
for(i=0;i<number;i++){
amount+=arr[i];
}
avg = amount/number;
return avg;
}else{
if(arr[0]<arr[1]){
min = arr[0];max=arr[1];
}
else{
min=arr[1];max=arr[0];
}
for(i=2;i<number;i++){
if(arr[i]<min){
amount+=min; //arr<min
min=arr[i];
}else {
if(arr[i]>max){
amount+=max; //arr>max
max=arr[i];
}else{
amount+=arr[i]; //min<=arr<=max
}
}//if
}//for
avg = (double)amount/(number-2);
}//if
return avg;
}
char auth[] = "8f41b49eeebf4a19bd4e9012e812d18d";
char ssid[] = "TALKTALKA2FFE5";
char pass[] = "6K6Q66CV";
bool isFirstConnect = true;
SimpleTimer timer;
Adafruit_ADS1115 ads; /* Use this for the 16-bit version */
//Adafruit_ADS1015 ads; /* Use thi for the 12-bit version */
float Voltage0 = 0.0;
float Voltage1 = 0.0;
float Voltage2 = 0.0;
float Voltage3 = 0.0;
void setup()
{
Serial.begin(115200);
Blynk.begin(auth, ssid, pass);
timer.setInterval(1000L, ReadANAlOGS);// changed from 350
// The ADC input range (or gain) can be changed via the following
// functions, but be careful never to exceed VDD +0.3V max, or to
// exceed the upper and lower limits if you adjust the input range!
// Setting these values incorrectly may destroy your ADC!
// ADS1015 ADS1115
// ------- -------
// ads.setGain(GAIN_TWOTHIRDS); // 2/3x gain +/- 6.144V 1 bit = 3mV 0.1875mV (default)
ads.setGain(GAIN_ONE); // 1x gain +/- 4.096V 1 bit = 2mV 0.125mV
// ads.setGain(GAIN_TWO); // 2x gain +/- 2.048V 1 bit = 1mV 0.0625mV
// ads.setGain(GAIN_FOUR); // 4x gain +/- 1.024V 1 bit = 0.5mV 0.03125mV
// ads.setGain(GAIN_EIGHT); // 8x gain +/- 0.512V 1 bit = 0.25mV 0.015625mV
// ads.setGain(GAIN_SIXTEEN); // 16x gain +/- 0.256V 1 bit = 0.125mV 0.0078125mV
ads.begin();
}
void ReadANAlOGS()
{
int16_t adc0, adc1, adc2, adc3;
adc0 = ads.readADC_SingleEnded(0);
adc1 = ads.readADC_SingleEnded(1);
adc2 = ads.readADC_SingleEnded(2);
adc3 = ads.readADC_SingleEnded(3);
Voltage0 = (adc0 * 0.125)/1000;
Voltage1 = (adc1 * 0.125)/1000;
Voltage2 = (adc2 * 0.125)/1000;
Voltage3 = (adc3 * 0.125)/1000;
static unsigned long orpTimer=millis(); //analog sampling interval
static unsigned long printTime=millis();
if(millis() >= orpTimer)
{
orpTimer=millis()+20;
orpArray[orpArrayIndex++]= Voltage0 ; //read an analog value every 20ms
if (orpArrayIndex==ArrayLenth) {
orpArrayIndex=0;
}
orpValue=((30*(double)VOLTAGE*1000)-(75*avergearray(orpArray, ArrayLenth)*VOLTAGE*1000/1024))/75-OFFSET; //convert the analog value to orp according the circuit
}
//if(millis() >= printTime) //Every 800 milliseconds,
//printTime=millis()+800;
Serial.print("AIN0: "); Serial.println(orpValue);
Serial.print("AIN1: "); Serial.println(Voltage1);
Serial.print("AIN2: "); Serial.println(Voltage2);
Serial.print("AIN3: "); Serial.println(Voltage3);
Serial.println(" ");
Serial.print(orpValue);
Blynk.virtualWrite(V0, orpValue);
Blynk.virtualWrite(V1, Voltage1);
Blynk.virtualWrite(V2, Voltage2);
Blynk.virtualWrite(V3, Voltage3);
Blynk.virtualWrite(V4, orpValue);
Blynk.virtualWrite(V5, Voltage1);
Blynk.virtualWrite(V6, Voltage2);
Blynk.virtualWrite(V7, Voltage3);
}
void loop()
{
Blynk.run();
timer.run();
}