Age: 15 Inspiration: N/A Purpose: A cool way to tell the time Significance: Most difficult PCB and soldering job to date. First time having size, weight, and speed as constraints.
At the end of Digital Electronics every student completes a final project which is designed to showcase what they have learned in the class. While I didn't quite pickup all of the skills required to make this clock in class, it was an interesting project that tested my breadth of knowledge in electronics.
The circuit board was designed, etched, and soldered by me. The ATMEGA328 controlling the clock was programmed using the Arduino IDE. The clock actually tells time accurately, however, because of the off balance circuit board and old computer fan the clock is too noisy to stay on all of the time. The clock features 24 individually controllable red/green bi-color LEDs, hall effect sensor tracking, and LiPo battery charging circuitry. The clock is reprogrammable, but to-date has only been tested as an analog clock.