Sean Marraffa
Published © MIT

The Smart Bulb Light Switch

Ever tried to turn your Smart Bulb on from the couch, only to find out that someone has turned off the light switch? Well, problem solved!

EasyFull instructions provided1 hour758
The Smart Bulb Light Switch

Things used in this project

Hardware components

Photon
Particle Photon
×1
Lifx Bulb
×1

Software apps and online services

Particle Cloud
Particle iOS App

Story

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Code

TInker Light Switch

C/C++
A modified Version of the Particle Tinker code.
/* Function prototypes -------------------------------------------------------*/
int tinkerDigitalRead(String pin);
int tinkerDigitalWrite(String command);
int tinkerAnalogRead(String pin);
int tinkerAnalogWrite(String command);
int previousState = 0;

/* This function is called once at start up ----------------------------------*/
void setup()
{
	//Setup the Tinker application here

	//Register all the Tinker functions
	Particle.function("digitalread", tinkerDigitalRead);
	Particle.function("digitalwrite", tinkerDigitalWrite);
	Particle.function("analogread", tinkerAnalogRead);
	Particle.function("analogwrite", tinkerAnalogWrite);

}

/* This function loops forever --------------------------------------------*/
void loop()
{
	// Read the current state of D7 Pin. 
    int currentState = digitalRead(D7); 
    // Check if current state of D7 is different than previous state 
    if (currentState != previousState){ 
	    Particle.publish("Toggle", PRIVATE);
       
        // Update previousState variable 
        previousState = currentState; 
    } 
}

/*******************************************************************************
 * Function Name  : tinkerDigitalRead
 * Description    : Reads the digital value of a given pin
 * Input          : Pin
 * Output         : None.
 * Return         : Value of the pin (0 or 1) in INT type
                    Returns a negative number on failure
 *******************************************************************************/
int tinkerDigitalRead(String pin)
{
	//convert ascii to integer
	int pinNumber = pin.charAt(1) - '0';
	//Sanity check to see if the pin numbers are within limits
	if (pinNumber< 0 || pinNumber >7) return -1;

	if(pin.startsWith("D"))
	{
		pinMode(pinNumber, INPUT_PULLDOWN);
		return digitalRead(pinNumber);
	}
	else if (pin.startsWith("A"))
	{
		pinMode(pinNumber+10, INPUT_PULLDOWN);
		return digitalRead(pinNumber+10);
	}
	return -2;
}

/*******************************************************************************
 * Function Name  : tinkerDigitalWrite
 * Description    : Sets the specified pin HIGH or LOW
 * Input          : Pin and value
 * Output         : None.
 * Return         : 1 on success and a negative number on failure
 *******************************************************************************/
int tinkerDigitalWrite(String command)
{
	bool value = 0;
	//convert ascii to integer
	int pinNumber = command.charAt(1) - '0';
	//Sanity check to see if the pin numbers are within limits
	if (pinNumber< 0 || pinNumber >7) return -1;

	if(command.substring(3,7) == "HIGH") value = 1;
	else if(command.substring(3,6) == "LOW") value = 0;
	else return -2;

	if(command.startsWith("D"))
	{
		pinMode(pinNumber, OUTPUT);
		digitalWrite(pinNumber, value);
		return 1;
	}
	else if(command.startsWith("A"))
	{
		pinMode(pinNumber+10, OUTPUT);
		digitalWrite(pinNumber+10, value);
		return 1;
	}
	else return -3;
}

/*******************************************************************************
 * Function Name  : tinkerAnalogRead
 * Description    : Reads the analog value of a pin
 * Input          : Pin
 * Output         : None.
 * Return         : Returns the analog value in INT type (0 to 4095)
                    Returns a negative number on failure
 *******************************************************************************/
int tinkerAnalogRead(String pin)
{
	//convert ascii to integer
	int pinNumber = pin.charAt(1) - '0';
	//Sanity check to see if the pin numbers are within limits
	if (pinNumber< 0 || pinNumber >7) return -1;

	if(pin.startsWith("D"))
	{
		return -3;
	}
	else if (pin.startsWith("A"))
	{
		return analogRead(pinNumber+10);
	}
	return -2;
}

/*******************************************************************************
 * Function Name  : tinkerAnalogWrite
 * Description    : Writes an analog value (PWM) to the specified pin
 * Input          : Pin and Value (0 to 255)
 * Output         : None.
 * Return         : 1 on success and a negative number on failure
 *******************************************************************************/
int tinkerAnalogWrite(String command)
{
	//convert ascii to integer
	int pinNumber = command.charAt(1) - '0';
	//Sanity check to see if the pin numbers are within limits
	if (pinNumber< 0 || pinNumber >7) return -1;

	String value = command.substring(3);

	if(command.startsWith("D"))
	{
		pinMode(pinNumber, OUTPUT);
		analogWrite(pinNumber, value.toInt());
		return 1;
	}
	else if(command.startsWith("A"))
	{
		pinMode(pinNumber+10, OUTPUT);
		analogWrite(pinNumber+10, value.toInt());
		return 1;
	}
	else return -2;
}

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Credits

Sean Marraffa

Sean Marraffa

2 projects • 0 followers
I am a Systems Integration Specialist for Sebastian Technologies. When I'm not hard at work I enjoy making fun home automation projects.

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