![]() One final requirement is that the alarm clock should remember the alarm and also keep track of time even if it loses power (such as by being unplugged, or through a power outage). This way, you can set the alarm for the morning without having to get out of bed. In addition to the physical interface, remote control of the system via a phone app through a bluetooth connection was also added. This would allow anybody to use the alarm clock just by walking up to it and twiddling with the dials. ![]() We also decided on a 2 button and a rotary encoder with button design for the user controls. We ultimately decided to stick with the TFT we have been using in the lab. For the user interface it needed to have a physical control interface. In this project this is a simple piezo buzzer that is very annoying and is sure to wake even the heaviest of sleepers up. It also needed a backup audio alarm in case the sunrise wasn’t enough to wake you up. We ended up calling this a "night light mode" because you could use the alarm as a "night light" if you needed to. It would also be awesome to be able to use this fancy LED during the day or night without the the alarm functionality. PWM dimming can create an annoying flicker and we wanted a smooth light viewing experience. Another important thing for the LED was that it used analog dimming. This was intended to create a pleasing light, but also to help combat Seasonal Affective Disorder. It needed to have a full spectrum LED to mimic sunlight. This iteration of a sunrise alarm clock had several design parameters. For the busy student, a sunrise alarm clock can mean the difference between waking up peacefully for class, or missing class entirely after shutting off their traditional alarm and falling right back asleep without even realizing it. Using a sunrise alarm clock can lead to more restful sleep, a gentler wake up experience, and make it more likely you actually stay up after waking up. If you are still asleep at the end of the sunrise cycle, a back up audio alarm goes off to wake you up. This allows your body to naturally wake up when it reaches the end of its current REM cycle rather than having in the middle of such a cycle (which can make waking up difficult and be disorienting). Rather than waking you up with an annoying alarm, a sunrise alarm clock slowly turns on a light in your room over the course of about an hour or so to simulate a natural sunrise. This report covers the design and building of a programmable alarm clock that uses a full spectrum LED to wake you up using your body’s natural response to sunlight. Sunrise Alarm Clock by jap482 Sunrise Alarm Clock by Jonathan Pfeifer and Ethan Meleen Introduction
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