adafruit<\/a>. This will allow me to run the train for 1 minute on the half hour in the evenings.<\/p>\n\/\/ Date and time functions using a DS1307 RTC connected via I2C and Wire lib\r\n\/\/ RTC communications based on example code here:\r\n\/\/ http:\/\/learn.adafruit.com\/ds1307-real-time-clock-breakout-board-kit\/understanding-the-code\r\n\/\/\r\n\/\/ RC servo contorl base on example code here:\r\n\/\/ http:\/\/arduino.cc\/en\/Reference\/ServoWrite\r\n\r\n#include <Wire.h>\r\n#include <Servo.h>\r\n#include \"RTClib.h\" \/\/ http:\/\/github.com\/adafruit\/DS1307-breakout-board\r\n\r\nRTC_DS1307 RTC; \/\/ real time clock object\r\nServo servoControl; \/\/ rc servo object\r\n\r\n\/\/ pin definitions\r\nint pinRTCGnd = 16; \/\/ analog pin 2 - used by Wire library\r\nint pinRTC5V = 17; \/\/ analog pin 3 - used by Wire library\r\nint pinRTCSDA = 4; \/\/ analog pin 4\r\nint pinRTCSCL = 5; \/\/ analog pin 5\r\nint pinLED = 13; \/\/ onboard LED\/digital pin 13\r\nint pinServoControl = 9; \/\/ digital pin 9\r\n\r\nint angleOn = 179; \/\/ position of rc servo to turn train on\r\nint angleOff = 90; \/\/ position of rc servo to turn train off\r\n\r\n\/\/ array to look up which hours the train should be turned on\r\nint onHours[] = { \r\n 0,0,0,0,0,0, \/\/ 0-5\r\n 0,0,0,0,0,0, \/\/ 6-11\r\n 0,0,0,0,0,1, \/\/ 12-17\r\n 1,1,0,0,0,0 \/\/ 18-23\r\n};\r\n\r\n\/\/ array to look up which minutes the train should be turned on\r\nint onMinutes[] = {\r\n 1,1,0,0,0,0,0,0,0,0, \/\/ 0-9\r\n 0,0,0,0,0,0,0,0,0,0, \/\/ 10-19\r\n 0,0,0,0,0,0,0,0,0,0, \/\/ 20-29\r\n 1,0,0,0,0,0,0,0,0,0, \/\/ 30-39\r\n 0,0,0,0,0,0,0,0,0,0, \/\/ 40-49\r\n 0,0,0,0,0,0,0,0,0,0 \/\/ 50-59\r\n};\r\n\r\nvoid setup () {\r\n \/\/set IO pins\r\n pinMode(pinLED, OUTPUT); \/\/ onboard LED\r\n pinMode(pinRTC5V,OUTPUT); digitalWrite(pinRTC5V,HIGH); \/\/ +5V for real time clock\r\n pinMode(pinRTCGnd,OUTPUT); digitalWrite(pinRTCGnd,LOW); \/\/ GND for real time clock\r\n\r\n \/\/ setup the real time clock\r\n Wire.begin(); \/\/ setup i2c communication\r\n RTC.begin(); \/\/ setup real time clock\r\n if (! RTC.isrunning()) {\r\n Serial.println(\"RTC is NOT running!\");\r\n \/\/ following line sets the RTC to the date & time this sketch was compiled\r\n RTC.adjust(DateTime(__DATE__, __TIME__));\r\n }\r\n\r\n \/\/ setup the rc servo\r\n servoControl.attach(pinServoControl); \/\/ attach servo\r\n servoControl.write(angleOff); \/\/ set to off position\r\n\r\n \/\/ setup serial monitor\r\n Serial.begin(57600); \/\/ setup serial communication\r\n}\/\/end setup\r\n\r\nvoid loop () {\r\n DateTime now = RTC.now(); \/\/ get time from real time clock\r\n\r\n if(onHours[now.hour()] && onMinutes[now.minute()]) {\r\n \/\/ train is on\r\n digitalWrite(pinLED,HIGH);\r\n servoControl.write(angleOn);\r\n } else {\r\n \/\/ train is off\r\n digitalWrite(pinLED,LOW);\r\n servoControl.write(angleOff);\r\n }\r\n\r\n sendTime(now); \/\/ send time from start of loop to the serial monitor\r\n\r\n delay(1000); \/\/ wait 1 second before running through loop again\r\n}\/\/ end loop\r\n\r\nvoid sendTime(DateTime now) {\r\n \/\/ send time to the serial monitor\r\n Serial.print(now.year(), DEC);\r\n Serial.print('\/');\r\n Serial.print(now.month(), DEC);\r\n Serial.print('\/');\r\n Serial.print(now.day(), DEC);\r\n Serial.print(' ');\r\n Serial.print(now.hour(), DEC);\r\n Serial.print(':');\r\n Serial.print(now.minute(), DEC);\r\n Serial.print(':');\r\n Serial.print(now.second(), DEC);\r\n Serial.println();\r\n}<\/pre>\n![\"Christmas](\"http:\/\/www.eyemonline.com\/wp-content\/uploads\/2013\/06\/Christmas-Train-2-150x112.jpg\")
<\/a>\n\t\t\t<\/dt>\n\t\t\t\t![\"Track](\"http:\/\/www.eyemonline.com\/wp-content\/uploads\/2013\/06\/Christmas-Train-1-150x112.jpg\")
<\/a>\n\t\t\t<\/dt>\n\t\t\t\t![\"Christmas](\"http:\/\/www.eyemonline.com\/wp-content\/uploads\/2013\/06\/Christmas-Train-3-150x112.jpg\")
<\/a>\n\t\t\t<\/dt>\n\t\t\t\t![\"Base](\"http:\/\/www.eyemonline.com\/wp-content\/uploads\/2013\/06\/Christmas-Train-4-150x112.jpg\")
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