LDR sensor + Arduino + Ruby....The idea is to send an email when the light downs!

sendMail.ino

#define LDR 0
       void setup() {
         Serial.begin(9600);
}
       void loop() {
         int LDR_value = analogRead(LDR);
         Serial.println(LDR_value);
         delay(250);
}

sendMail.rb

require "serialport"

@port = "/dev/tty.usbmodem1421"
@baud_rate = 9600  
@data_bits = 8  
@stop_bits = 1  
@parity = SerialPort::NONE  
@serial_port = SerialPort.new(@port, @baud_rate, @data_bits, @stop_bits, @parity)


def lightControl()
 sp_char = @serial_port.gets.chomp
	 
	 if sp_char.to_i <=150
	 	sendMail()
	 	@serial_port.close
	 else
	 	lightControl()
	 end
end

def sendMail()
	#implements your "send email" logic here!!
	puts 'An email has sent to jreisstudio@gmail, to fix the light problem!'
	
end
sleep 2
lightControl()