Childs Neopixel Sunrise Alarm Clock

This is a simple alarm clock that switches between a day and a night image so children who can't tell the time know when it's acceptable to get up in the morning. It was thrown together out of necessity when I realised I had left our real clock at grannies. I thought I would share the details here though in case anyone else wants to try a clock for their own child.

Components:

• Arduino Nano V3.0
• 16 LED NeoPixel Ring
• DS1307 Real Time Clock
• Mobile Phone Charge power supply

Wiring:

• Power for the whole arrangement comes through the USB connection
  5V, GND from both the RTC and the Neopixel Ring are connected to the Arduino.
• Data in from the Neopixel Ring connects to Digital input 2 on the Arduino
• SCL of the RTC goes to Analogue input 5 on the Arduino
• SDA of the RTC goes to Analogue input 4 on the Arduino

Libraries:

• Wire Library - for connecting to the RTC with I2C
• DS1307RTC Library - for understanding what the RTC says over I2C
• Time Library - lets the Arduino understand times
• TimeAlarms Library - executes functions at specific times/intervals
• FastLED Library - for communicating with the NeoPixel ring

Code:

Full source is available for download from here

• The first lines of the setup function define the time that the alarm will go off
• The RTC and Neopixel ring are initialised
• Two alarms are created, one at the time previously specified another an hour later
• The main loop of the program does nothing except create a delay that keeps the timer ticking
• LightsOn function, creates the short sunshine animation when the alarm goes off
• LightsOff function, switches the LED's back to night time colour