Quantity   Component name
1 × MG995 servo or similar Servo is modified to work as a continuous rotati95 servo modon motor
1 × CD4017 CMOS counter
1 × Blue LEDs 20 pcs
1 × Infra red slot barrier sensor Infra red slot sensor harvested from old optical mouse.
1 × Wood board any kind of wood will suit. I am using a 14 inch cake making base because it is already cut in round shape
1 × battery holder battery holder that takes 3 X AA size batter delivering 4.5 volts supply to circuit. This was takes from broken toy.
1 × car LED signal This is arrow shaped LED board, bough from ebay to be used for car turn signal. I use here to light over the stopping clock. This LED arrow works on 12 volts. since this project uses 4.5 volts only. I re-wired the surface mount LEDs in parallel instead or serious to make them glow on 4.5 volts.