#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: