We’ve seen our fair share of sunrise simulators, but by far this one is the most polished build–everything from the atomic clock circuit to the LEDs are all packed cleanly in a frosted acrylic case.
Renaud Schleck, the tinker behind the build, describes the guts:
This is an alarm clock simulating the sunrise, which means that a few minutes before the alarm goes off, it shines some light whose brightness increases over time.
The alarm clock is built around a MSP430G2553 microcontroller compatible with the MSP430 Launchpad from Texas Instrument.
It features a DCF77 module which sets the clock automatically through radio waves.
The display is a character LCD module with 4 lines of 40 characters driven by a HD44780 controller.
The light is produced by a several white LEDs which shine their light through the translucent front face of the clock.
The audible alarm consists of a selected melody played by two speakers.
While it might not be the brightest sunrise simulator around (that distinction would go the MacGyvered models that incorporate halogen lamps), it’s certainly the most polished, compact, and portable. Hit up the link below for the build guide and more information.