Doomsday clock

Concept:

The doomsday clock shows the time left till doom. But with our action - covering the small piece of nature (with photoresistor inside) with our hand - it can stop the clock ticking and eventually stop doomsday.

For this ideation, we decided to use a motor, buzzer, and photoresistor.

Input: Photoresistor sensor

Output: Motor motion and Buzzer sound

Video in action:

Process:

4 Attempts were made to achieve the final result by integrating the components step by step.

Attempt 1 - Servo Motor and Light sensor

Attempt 2 - Motor with Switch

Attempt 3 - Light sensor and Motor

Attempt 4 - Light sensor + Motor + Buzzer

Attempt 5 - Final code with optimisation

Circuit Diagram:

Servo motor, Motor driver, Arduino UNO and photoresistor were connected as per the diagram.

Learning:

While using a motor and a buzzer, the TONE function in Arduino code interferes with specific pins 3 and 11. So, ensure to not use these pins.
The sensor position of the user to interact should be within the reach of the user and intuitive from its shape/ structure

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