Hao-Kai Wen's Website

中文

Polestar

The Sensing Motion Bike Light

Introduction

When riding a bicycle at the dark night, it is necessary to equip a bike light to avoid riding in the mud, falling into a hole, and hitting an animal. However, while a cyclist makes a left corner at enough speed, the conventional bike light on the handlebar barely turn, so it can barely brighten the upcoming left side road.

Polestar is a lighting device which solves the above issue. It senses the acceleration, determines the direction the bike turned to, and brightens the upcoming road.

In addition, Polestar also provides these functions:

  • lighting up the rear light while braking, and
  • automatically turning on the light when riding into tunnel or in the dark.

Materials:

  • Microcontroller: Atmega168
  • 3-axis accelerometer MMA7455
  • Light sensor: Photoresistance
  • CREE Q5 LED
  • Laser cut shell
  • Rear brake light

Team Members

Hao-Kai Wen, Meng-Chu Ke, Hao-Yuan Chou, Chun-Yang Lu

Gallery