LED Graduation Cap
Sunshine Alarm
Objective
For my first senior project, unlike most students, I created something that I could use in my day to day life. I often wake up before the sun rises to get a head start on the day, but found myself having a tough time getting out of bed. I knew if I could wake more naturally I would have a better day. So I decided to make a light alarm clock.
Materials
The alarm’s core components consisted of the following:
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A personally developed PCB
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A 40 pin PIC microprocessor
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A RTC
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A LCD display
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Multiple buttons and potentiometers for user’s input
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A very bright LED
Full Bill of Materials for the project:
Accomplishments
Through this project I was able to accomplish:
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Creating a custom PCB in Altium
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Setting up a multiple state embedded processor
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Writing a I2C library for the PIC
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Accessing register information from a RTC
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Displaying current state information on LCD
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Controling LED brightness with pulse width modulation
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Power regulation through a LDO and capacitors
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Powering a semi “high” current LED through a power mosfet
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Using ADCs to read potentiometers (selectors)
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Using a DAC to conrtol brightness of LCD
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Using interrupts to receive button presses
If you would like to check out the detailed project report or source code please check out my github repository.
Thanks,
James
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Sunshine Alarm
Objective