'MySensoring' a GE Washer

[RJ_Make]

This is another very simple "Wash Cycle Completed" sensor. It's design uses the same Optocoupler sensing design I used in the Kiddie Smoke Detector project. The only difference is that I'm using 1 AC to DC transformer, and a boost module to boost the washer speaker power to fire the Optocoupler.

Parts:

1. 1 Cheap AC/DC converter
2. 1 Optocoupler
3. 1 Step up Regulator
4. 1 Small Proto Board.
5. Some wire

Highlights:
Use the Washers .5vdc Signal Piezo to interface with the Pro-Mini. The voltage to the Piezo is to low to drive the Optocoupler so I had to use a boost module to boost the voltage to the Optocoupler. I'm not sure what the long term effect will be on washers control board Piezo drive circuit, so I will follow up if I encounter a problem.

Again Uses the same sketch as the Kiddie Smoke Project, with the only change being to CYCLE_INTERVAL (For my dryer 3 works well)

Sketch:

// Based on Author: Patrick 'Anticimex' Fallberg Interrupt driven binary switch example with dual interrupts

#include <MySensor.h>
#include <SPI.h>

#define SKETCH_NAME "Washer End Cycle"
#define SKETCH_MAJOR_VER "1"
#define SKETCH_MINOR_VER "1"

#define CHILD_ID 3

#define SIREN_SENSE_PIN 3   // Arduino Digital I/O pin for optocoupler for siren

unsigned int SLEEP_TIME			= 32400; // Sleep time between reads (in seconds) 32400 = 9hrs?
long CYCLE_COUNTER					= 3;  // This is the number of times we want the Audio Counter to reach before triggering a signal to controller.
unsigned long CYCLE_INTERVAL		= 3; // How long do we want to watch once first detected (in seconds) 
											//Adjust for your smoke detector, you want to pick up the siren signal at least 3 time to help stop false alarms. 
unsigned long CYCLE_RATE			= 90; // How fast do we want to move checking the Pin state in the Status Check (in Millis) Adjust for your smoke detector
											//Adjust for your smoke detector, you want to pick up the siren signal at least 3 time to help stop false alarms.
unsigned long CYCLE_TIME_OKSTATUS	= 8; // How long do we want to watch for "all clear" once we have confirmed an Alarm (in seconds)
unsigned long CYCLE_RATE_OKSTATUS	= 500; // How fast do we want to move checking the Pin state when checking for an OK status (in Millis)

int oldValue=1;
int value=0;


MySensor sensor_node;
MyMessage msg(CHILD_ID, V_TRIPPED);

void setup()  
{  
	sensor_node.begin();
	// Setup the Siren Pin HIGH
	pinMode(SIREN_SENSE_PIN, INPUT_PULLUP);
	// Send the sketch version information to the gateway and Controller
	sensor_node.sendSketchInfo(SKETCH_NAME, SKETCH_MAJOR_VER"."SKETCH_MINOR_VER);
	sensor_node.present(CHILD_ID, S_SMOKE); 
	//Send the state -- Always send Alarm state on power up.
	sensor_node.send(msg.setSensor(CHILD_ID).set("1"), true);
	
}

// Loop will iterate on changes on the BUTTON_PINs
void loop() 
{
	// Check to see if we have a alarm. I always want to check even if we are coming out of sleep for heartbeat.
	AlarmStatus();
	// Sleep until we get a audio power hit on the optocoupler or 9hrs
	sensor_node.sleep(SIREN_SENSE_PIN-2,FALLING, SLEEP_TIME * 1000UL);
	
} 

void AlarmStatus()
{
	
// We will check the status now, this could be called by an interrupt or heartbeat
int siren_audio_count	=0;
long cycle_time			=0; 	
unsigned long startedAt = millis();

	Serial.println("Status Check");
	//Read the Pin
	value = digitalRead(SIREN_SENSE_PIN);
    // If Pin return a 0 (LOW), then we have a Alarm Condition
	if (value != 1) {
		 //We are only going to check for status for CYCLE_INTERVAL time I think this should help stabilize Siren Sensing
		  while(millis() - startedAt < CYCLE_INTERVAL * 1000)
		  {
			  //We are going to check CYCLE_RATE fast
			  if(millis() - cycle_time > CYCLE_RATE ) {
				  // save the last time you Checked
				  cycle_time = millis();
				    //We will count each time SIREN_SENSE_PIN is 0 (Alarm - LOW) for the above time and at the above rate.
					value = digitalRead(SIREN_SENSE_PIN);  
						if (value != 1)
						{
							siren_audio_count++;
							Serial.print("Audio Count: ");
							Serial.println(siren_audio_count);
						} 
			  }
		  }
				// Eval siren audio hit count against our limit. If we are => then CYCLE_COUNTER then lets start a loop for "All Clear" reset
				// If we continue to return an audio power hit, then we will continue to send to the controller. 
				if (siren_audio_count>=CYCLE_COUNTER)
				{
					Serial.println("Alarm Detected");
					
					do 
					{
					  //update gateway with bad news.
					  //sensor_node.send(msg.set("1"));
					  sensor_node.send(msg.setSensor(CHILD_ID).set("1"), true);
					  Serial.println("Alarm Detected Sent to gateway");
					} while (IsAlarmAllClear()!=1);
				
				}
	}
	//Pin returned a 1 (High) so there is no alarm. 
	else
	{
	  IsAlarmAllClear();
	}
}

int IsAlarmAllClear()
// We are looking for an gap in time that we no longer see an audio power hit to the optocoupler. 

{
 int alarmOn				=0;
 long cycle_time			=0;
 unsigned long startedAt	= millis();

	//We are only going to check for status for CYCLE_TIME_OKSTATUS time	
	while(millis() - startedAt < CYCLE_TIME_OKSTATUS * 1000)
	{
		//We are going to check CYCLE_RATE_OKSTATUS fast
		if(millis() - cycle_time > CYCLE_RATE_OKSTATUS) {
			// save the last time you Checked
			cycle_time = millis();
			int value = digitalRead(SIREN_SENSE_PIN);
			if (value != 1) //We are still in an alarm state
			{
				alarmOn++;
			}
		}
	}
			if (alarmOn < 1)
			{
				// We don't have any sign that we are still in an alarm status
				//Send all clear msg to controller
				//sensor_node.send(msg.set("0"));
				sensor_node.send(msg.setSensor(CHILD_ID).set("0"), true);
				// Used to update the node - NOT used for battery check.
				sensor_node.sendBatteryLevel(random(1, 100) );
				Serial.println("All Clear");
				return 1;
			} 
			else
			{
				// We are still in an alarm status
				//The calling function will handle sending NOT CLEAR to controller				
				Serial.println("NOT CLEAR");
				return 0;
			} 	 

}

Here a some Pictures:

[hek]

You've been busy this weekend

[RJ_Make]

@hek More like a busy week..

[arcidodo]

Thanks! i updated it to version 2.0 but it's working perfectly

// Based on Author: Patrick 'Anticimex' Fallberg Interrupt driven binary switch example with dual interrupts
// Enable debug prints to serial monitor
#define MY_DEBUG

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

//#define MY_REPEATER_FEATURE
#define MY_NODE_ID 17

#include <SPI.h>
#include <MySensors.h>

#define CHILD_ID 1

#define SIREN_SENSE_PIN 3   // Arduino Digital I/O pin for optocoupler for siren

unsigned int SLEEP_TIME      = 32400; // Sleep time between reads (in seconds) 32400 = 9hrs?
long CYCLE_COUNTER          = 3;  // This is the number of times we want the Audio Counter to reach before triggering a signal to controller.
unsigned long CYCLE_INTERVAL    = 3; // How long do we want to watch once first detected (in seconds) 
                      //Adjust for your smoke detector, you want to pick up the siren signal at least 3 time to help stop false alarms. 
unsigned long CYCLE_RATE      = 90; // How fast do we want to move checking the Pin state in the Status Check (in Millis) Adjust for your smoke detector
                      //Adjust for your smoke detector, you want to pick up the siren signal at least 3 time to help stop false alarms.
unsigned long CYCLE_TIME_OKSTATUS = 8; // How long do we want to watch for "all clear" once we have confirmed an Alarm (in seconds)
unsigned long CYCLE_RATE_OKSTATUS = 500; // How fast do we want to move checking the Pin state when checking for an OK status (in Millis)

int oldValue=1;
int value=0;


//MySensors sensor_node;
MyMessage msg(CHILD_ID, V_TRIPPED);

void setup()  
{  
  // Setup the Siren Pin HIGH
  pinMode(SIREN_SENSE_PIN, INPUT_PULLUP);
}

void presentation()  
{ 

  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Washer End Cycle", "1.1");
  present(CHILD_ID, S_SMOKE); 
  //Send the state -- Always send Alarm state on power up.
  send(msg.setSensor(CHILD_ID).set("1"), true);
  
}

// Loop will iterate on changes on the BUTTON_PINs
void loop() 
{
  // Check to see if we have a alarm. I always want to check even if we are coming out of sleep for heartbeat.
  AlarmStatus();
  // Sleep until we get a audio power hit on the optocoupler or 9hrs
  sleep(SIREN_SENSE_PIN-2,FALLING, SLEEP_TIME * 1000UL);
  
} 

void AlarmStatus()
{
  
// We will check the status now, this could be called by an interrupt or heartbeat
int siren_audio_count =0;
long cycle_time     =0;   
unsigned long startedAt = millis();

  Serial.println("Status Check");
  //Read the Pin
  value = digitalRead(SIREN_SENSE_PIN);
    // If Pin return a 0 (LOW), then we have a Alarm Condition
  if (value != 1) {
     //We are only going to check for status for CYCLE_INTERVAL time I think this should help stabilize Siren Sensing
      while(millis() - startedAt < CYCLE_INTERVAL * 1000)
      {
        //We are going to check CYCLE_RATE fast
        if(millis() - cycle_time > CYCLE_RATE ) {
          // save the last time you Checked
          cycle_time = millis();
            //We will count each time SIREN_SENSE_PIN is 0 (Alarm - LOW) for the above time and at the above rate.
          value = digitalRead(SIREN_SENSE_PIN);  
            if (value != 1)
            {
              siren_audio_count++;
              Serial.print("Audio Count: ");
              Serial.println(siren_audio_count);
            } 
        }
      }
        // Eval siren audio hit count against our limit. If we are => then CYCLE_COUNTER then lets start a loop for "All Clear" reset
        // If we continue to return an audio power hit, then we will continue to send to the controller. 
        if (siren_audio_count>=CYCLE_COUNTER)
        {
          Serial.println("Alarm Detected");
          
          do 
          {
            //update gateway with bad news.
            //sensor_node.send(msg.set("1"));
            send(msg.setSensor(CHILD_ID).set("1"), true);
            Serial.println("Alarm Detected Sent to gateway");
          } while (IsAlarmAllClear()!=1);
        
        }
  }
  //Pin returned a 1 (High) so there is no alarm. 
  else
  {
    IsAlarmAllClear();
  }
}

int IsAlarmAllClear()
// We are looking for an gap in time that we no longer see an audio power hit to the optocoupler. 

{
 int alarmOn        =0;
 long cycle_time      =0;
 unsigned long startedAt  = millis();

  //We are only going to check for status for CYCLE_TIME_OKSTATUS time  
  while(millis() - startedAt < CYCLE_TIME_OKSTATUS * 1000)
  {
    //We are going to check CYCLE_RATE_OKSTATUS fast
    if(millis() - cycle_time > CYCLE_RATE_OKSTATUS) {
      // save the last time you Checked
      cycle_time = millis();
      int value = digitalRead(SIREN_SENSE_PIN);
      if (value != 1) //We are still in an alarm state
      {
        alarmOn++;
      }
    }
  }
      if (alarmOn < 1)
      {
        // We don't have any sign that we are still in an alarm status
        //Send all clear msg to controller
        //sensor_node.send(msg.set("0"));
        send(msg.setSensor(CHILD_ID).set("0"), true);
        // Used to update the node - NOT used for battery check.
        sendBatteryLevel(random(1, 100) );
        Serial.println("All Clear");
        return 1;
      } 
      else
      {
        // We are still in an alarm status
        //The calling function will handle sending NOT CLEAR to controller        
        Serial.println("NOT CLEAR");
        return 0;
      }    
}

[Tmaster]

why not connect the buzzer signal direct to arduino analog read? optocoupter for a 80cents arduino?