Thank you for the reply. So I should be ok for power off the arduino? I'm hoping to keep it as one power input to keep it clean looking.
The IR setup will be in the bottom and top. In clock mode the top detects proximity to turn the alarm on and off and to silence the alarm when running and the bottom remains dormant. They will be configured in a way to make it seem that the perspex is being pressed.
When placed on its left side (gyroscope) the clock enters alarm edit mode where the now left and right IR sensors allow change of the minute and hour values. The same happens with the clock on its right hand side. This allows the clocks time to be edited. With some fancy animation to signify different modes
The lights sensors job it to pass ambient light values to the Tlc to dim the clock face in the dark.