Simple Electronics for STEM Education

Illuminated
Jellyfish

Clothespin Circuit

Banner01.jpg

RGB Jellyfish Teaser

Tip: If videos on this site are unavailable, refresh the page.

 

Materials

 What you need

  1. thin translucent paper (not to sturdy)

  2. conductive tape

  3. two LEDs (RGB slow fade)

  4. button cell

  5. paper clip

  6. clothespin

  7. transparent tape

Not in picture: Scissors for cutting the conductive tape.

 

Preparation - Test Your LED

Things to remember

  • LEDs only work in one direction.

  • LEDs have a longer leg. It has to point to the plus side of the button cell.

  • You can use any LED for this project.


Step 1 - Form The Body

Steps:

  1. Grab the middle.

  2. Bring all corners to one side.

  3. Squash the paper.

  4. Inflate the jellyfish body. Make it as big as possible.

  5. Grab the lower part and wrap the body around your fist.

 

Step 2 - Form The Outer Tentacles

Steps:

  1. Cut the paper and separate the four corners.

  2. Twist the corners to form four tentacles.

  3. Move the tentacles to the outside of the jellyfish body.

  4. Model the jellyfish to your liking.

 

Step 3 - Make The Inner Tentacles

Steps:

  1. Prepare 2 or 4 long strips of transparent paper.

  2. Twist the paper strips to form long tentacles.


Step 4 - Prepare the clothespin

Steps:

  1. Insulate the metal springs on both sides with tape.

  2. Run conductive tape around both sides of the clothespin as shown in the video.


Step 5 - Attach the LED

Steps:

  1. Add the LED.

  2. Make sure the LED legs connect to different strips of conductive tape.

  3. Use short strips of conductive tape to attach the LED leg.

  4. Add the button cell.

  5. Turn around the button cell if your LED does not light up.


Step 6 - Add The Second LED And The Long Tentacles

Steps:

  1. Add an LED to the button cell and reattach both to the clothespin circuit. Both LEDs should light up.

  2. Attach the long tentacles using transparent tape.

 

Step 7 - Make A Hook To Hang Your Jellyfish

Steps:

  1. Bend a paper clip straight and attach it to the clothespin using transparent tape.

  2. Poke the paper clip through the jellyfish body and make a hook.

Make sure the paper clip does not slip underneath the transparent tape.

 

Turning your jellyfish off:

  • To turn your jellyfish off simply remove the battery from the clothespin.


Tips for teachers:

  • I usually show how to form the jellyfish body live in class. For the other steps, the videos are better suited.

  • Videos restart automatically, so you can move around the room while the video continues to play.

  • On low bandwidth, you can also right-click on a video and select 'Loop' to loop the video without reloading it.

  • I like to hover the mouse over the play button to keep the progress bar visible.