Hello I'm Christopher Tjia and today I'm gonna show you how to make a fading LED.
Step 1: Watch the Video
the the video is in my youtube channel Christopher Tjia, link:
Step 2: Buy All of the Components
The components for thias project are:
1pc 9V power supply, for this i'm using a variable bench power supply
1pc red LED
1pc 10 uF capacitor
1pc NE555 timer chip
1pc 470 ohm resistor
1pc 100k ohm resistor
1pc BC547 transistor
and some wires
Step 3: Schematic
For how does this fading LED works, will be in my next instructables.
Step 4: Arrage the NE555 Pin
First arrage the NE555 timer chip pin like this
Step 5: Connect the Resistor
Then solder the 100k ohm resistor to pin 3 of the NE555
Step 6: Connect the The Transistor
Connect the base pin of the BC547 transistor to the other pin of the 100k ohm resistor
Step 7: Connect the Other Resistor
Connect the 470 ohm resistor to the emitter pin of the BC547 transistor
Step 8: Connect the LED
Connect the positive pin of the LED to the other pin of the 470 ohm resistor
Step 9: Conect the Capacitor
Connect the positive pin of the 10 uF capacitor to the 100k ohm resistor and the base pin of the BC547
Step 10: Connect Pin 6
connect pin 6 of the NE555 to the 100k ohm resistor, the base pin of the BC457 transistor, and to the positive pin of the 10uF capacitor
Step 11: Connect the Components to VCC and Ground
Connect pin 8 and pin 4 of the NE555 and the emitter pin of the BC547 to the VCC. And pin 1 of the NE555, negative pin of the 10uF capacitor, and the negative pin of the LED to Ground.
Step 12: Testing
If you connect every thing correctly then if you apply power to the cirxuit then the LED will start fading in and fading out. Thank yopu for reading this instructables, please like and share , until next time, BYE.