1. Some parts needs in this project.

2. Soldering.

3. Finished.

Product list:

9v Battery: https://www.utsource.net/itm/p/1899471.html

Soldering Iron: https://www.utsource.net/itm/p/8423764.html

PCB Board: https://www.utsource.net/Home/PCBService

LED: https://www.utsource.net/itm/p/1886498.html

Heat Shrink Tube: https://www.utsource.net/itm/p/6466015.html

BC547/ BC548: https://www.utsource.net/itm/p/382309.html

Resistor: https://www.utsource.net/itm/p/8445573.html

Capacitor: https://www.utsource.net/itm/p/9267199.html

Buzzer: https://www.utsource.net/itm/p/9221609.html

IRFZ44N: https://www.utsource.net/itm/p/981727.html

More details, pls check the video on Youtube: