LED Flasher


Place:Banjarapalya E4D maker space.


1.2N3904 transistors x2

2.10µf caps x2

3.Red LEDs x2

4.470Ω resistors x2

5.100kΩ resistors x2

6.Assorted jumpers

7.A breadboard

8.9V battery

9.9V battery clip

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: the Schematic Diagram.

Follow the schematic diagram for this circuit.

Step 2: Insert the Transistors and Resistors.

Fix the 2 transistors in your .Then insert the wire to the transistor to the breadboard negative side.

connect the 2 100kΩ resister to the breadboard as shown in the image.

Then you connect the 2 470Ω resister to the breadboard as shown in the image.

Step 3: Insert the Capacitor.

Insert the 2 capacitors as shown in the picture. Put the negative side of the caps on a free rail on the breadboard.

Step 4:

Fix the jumper wire and LED as shown in the image.

Step 5: Connect the Battery.

Last and finally connect the battery to the breadboard.as shown in the image.

Step 6: You Can Put Both Side

You can put both side LEDs.and you can put straw upon the LEDs.it look like nice.

Be the First to Share


    • CNC Contest

      CNC Contest
    • Make it Move

      Make it Move
    • Teacher Contest

      Teacher Contest