1. All the materials we need in this project.

2. All the step’s screenshot.

3. Test it.

4. Diagram circuit.

Product list:

LED  https://www.utsource.net/category/led-lighting-1.html 

BC547/ BC548  https://www.utsource.net/sch/BC547

Resistor  https://www.utsource.net/category/passive-components/resistors-1.html

Capacitor  https://www.utsource.net/category/passive-components/capacitors-1.html

Buzzer   https://www.utsource.net/sch/Buzzer

More details, pls check this video on Yotube: