DIY Cycle Speedometer

This project came to my mind when doing my MEM (Mechanical Engineering Measurement) project, a subject in my B.tech. The idea is to measure the angular velocity of my bicycle’s wheel. Thus knowing the diameter and the all time mathematical legend the pi(3.14) the speed can be calculated. Also knowing the number of time the wheel has rotated, the distance traveled can be easily known. As an added bonus, I decided to add a beaklight to my cycle. Now the challenge was to when to turn the brake light. Answer is below.”

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