These awesome clocks can double as night-lights.
via JonathonT on instructables
This simple, inexpensive Arduino real time clock is configurable to set multiple light up alarms of any color at whatever times necessary. I have added buttons for setting clock and alarm times, as well as brightness and colors, and settings are saved to long-term memory so unplugging from power doesn’t require any resetting. Now with the 3D printed case and customizable globe tops, let me introduce to you version 2.0!
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