Sorry for the delay. I'm about to try this now thank you.

 

hi a,
Running tests with a 1kHz sine wave, set to 250mVrms, the detection point count is close to 15,
Use this Sketch for testing, note the onboard LED lights when it senses the ringer.
E
OT: Hope the weather is better in B'rum.

/*
 Basic ADC read 06/12/2021  author Ringer4
 Onboard LED Lights when Limit is exceeded. ie:Ringing
*/

int ADCin0 = A0;
int ADC0val = 0;
int ADC0avg = 0;
int ledPin = 13;

void setup()
{
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
}

void loop(){
for (int i =0; i<= 100; i++){ //get100 samples
  ADC0val= analogRead(ADCin0);
  ADC0avg= (ADC0avg + ADC0val);// sum samples
  delay(10);//100samples*10mSec=1Sec Period
  }
  ADC0avg=(ADC0avg/100);
  Serial.println(ADC0avg); // Test ONLY
 
if (ADC0avg >= 15){ // check for over Limit
  Serial.println ("Ring On"); // greater thanlimit 
   digitalWrite(ledPin, HIGH);
   }else{
   Serial.println ("Off"); // greater thanlimit
   digitalWrite(ledPin, LOW);
  }
 delay(500);
 ADC0avg=0; // clear average
 
}

 

hello. Absolutely fantastic..

The next thing is I needed to turn on a relay. But the relay should stay on for 1500 ms.

I'm just looking at how to do that now

Thank you

 

Hi a,
Look up the millis option for a time delay, if you need any input, just ask.

Use the same method for the Relay pin as the Onboard LED pin control
E

BTW:
If the Uno is not doing any other operations while the Relay is On for 1.5 Secs a simple delay
would do,
(delay1500);

 

Excellent.

/*
 Basic ADC read 06/12/2021  author Ringer3
*/
int ADCin0 = A0;
int ADC0val = 0;
int ADC0avg = 0;

// constants won't change
const int RELAY_PIN = 3;  // the Arduino pin, which connects to the IN pin of relay


void setup()
{
  Serial.begin(9600);
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop(){
for (int i =0; i<= 150; i++){ //get100 samples
  ADC0val= analogRead(ADCin0);
  ADC0avg= (ADC0avg + ADC0val);// sum samples
  delay(10);//100samples*10mSec=1Sec Period
  }
  ADC0avg=(ADC0avg/100);
  // Serial.println(ADC0avg); // Test ONLY
 
if (ADC0avg >= 40){ // check for over Limit
  Serial.println ("Ringing");
  digitalWrite(RELAY_PIN, HIGH);
  digitalWrite(LED_BUILTIN, HIGH);
  delay(2000);
  digitalWrite(RELAY_PIN, LOW);
  digitalWrite(LED_BUILTIN, LOW);
  delay(100);// greater thanlimit
  }
 delay(500);
 ADC0avg=0; // clear average


 
}

So this is feasible to do on an Arduino Nano as well?

Thank you

 

hi a,
It should be OK on a Nano.
E

 

Hi,

So I have kept it one for about a good 4 hours, however it has started to act up.

/*
 Basic ADC read 06/12/2021  author Ringer4
 Onboard LED Lights when Limit is exceeded. ie:Ringing
*/

int ADCin0 = A0;
int ADC0val = 0;
int ADC0avg = 0;
int ledPin = 13;
const int RELAY_PIN = 3;  // the Arduino pin, which connects to the IN pin of relay
void setup()
{
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(RELAY_PIN, OUTPUT);
}

void loop(){
for (int i =0; i<= 100; i++){ //get100 samples
  ADC0val= analogRead(ADCin0);
  ADC0avg= (ADC0avg + ADC0val);// sum samples
  delay(10);//100samples*10mSec=1Sec Period
  }
  ADC0avg=(ADC0avg/100);
  Serial.println(ADC0avg); // Test ONLY
 
if (ADC0avg >= 50){ // check for over Limit
  Serial.println ("Ring On"); // greater thanlimit
   digitalWrite(ledPin, HIGH);
   digitalWrite(RELAY_PIN, HIGH);
   digitalWrite(LED_BUILTIN, HIGH);
   delay(1500);
   digitalWrite(RELAY_PIN, LOW);
   digitalWrite(LED_BUILTIN, LOW);
   }else{
   Serial.println ("Off"); // greater thanlimit
   digitalWrite(ledPin, LOW);
  }
 delay(100);
 ADC0avg=0; // clear average
 
}

I have been playing with the values, but I am not quite sure.

Thanks

 

after observing for a little bit it seems to be just rising.



there seems to be no apparent reason.

 

Hi a,
Post a print-out showing the ADC value when the ringer is connected, but NOT ringing
This value should be close to zero, ie: 0V and stay close to zero over a period of time.

If it not then you may have electrical noise on the connecting wires, how long and what type of wire are you using.?

Then a short print out when ringing, so that we can compare the two levels.

If possible, a photo shot of the project may help.

E
BTW: did a quick check for the Nano, works as expected.

Update:
Test run for that incrementing problem, nothing showing here.
Two text files, Ring Off, Ring On for comparison

 

Here we go:

int analogPin = A0; // potentiometer wiper (middle terminal) connected to analog pin 3
                    // outside leads to ground and +5V
int val = 0;  // variable to store the value read

const int RELAY_PIN = 3;  // the Arduino pin, which connects to the IN pin of relay
int ledPin = 13;

void setup() {
  Serial.begin(9600);           //  setup serial
   pinMode(ledPin, OUTPUT);
  pinMode(RELAY_PIN, OUTPUT);
}

void loop() {
  val = analogRead(analogPin);  // read the input pin
  Serial.println(val);          // debug value
  delay (50);

if (val >= 125){ // check for over Limit
Serial.println ("Ring On"); // greater thanlimit
   digitalWrite(ledPin, HIGH);
   digitalWrite(RELAY_PIN, HIGH);
   digitalWrite(LED_BUILTIN, HIGH);
   delay(2000);
   digitalWrite(RELAY_PIN, LOW);
   digitalWrite(LED_BUILTIN, LOW);
   delay(500);
   }else{
   Serial.println ("Off"); // greater thanlimit
   digitalWrite(ledPin, LOW);
 
  }
}

After leaving it for 20 minutes:




When Ring is on:



So far the above code works... However, I am up for suggestions on how to improve it.

 

hi a,
Until I see how your circuit is wired I don't see how I can suggest improvements, please post a diagram or photo shot.

I don't see any problems with the two Arduino's I have running.
E

Update:
I assume you are using the Nano internal Vref of 5V.?
The readings you are getting suggest a signal from the ringer is greater than 250mV...

Added:
Uno been running the Sketch for 4 hours, no change. Image print..