#1 PC817 Optocoupler LED Flasher

1.Some parts needs in this project.

2.Soldering.

3.Finished.

#2 LED Flasher with Capacitor

1.Some parts needs in this project.

2.Soldering.

3.Finished.

4.Connecting 1 LED Parallel

5.Connecting 4 LED Parallel

6.Let's See All 3 Cases Side by Side

7.Let's Change the 10uF Capacitor with 1uF 63v Capacitor

#3 3 LED Flasher

1.Some parts needs in this project.

2.Soldering.

3.Finished.

Product list:

1. 9v Battery: https://www.utsource.net/itm/p/1899471.html

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

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

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

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

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

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

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

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

More details, pls check the video on Youtube: