Homework: Plush toy

Hello! This my final plush toy – Smile.


When turning on the switch, it looks in this way:


How I make this plush toy

  • Finish the sketch of the toy and the circuit
  • Choose the fabrics
  • (1) The fabric for the hair and eyes: black and very thick fabric to block the light
  • (2) The fabric for the face: flesh and thin fabric to let the light get through it
  • (3) The fabric for the mouth: Two different red fabrics
  • Cut the outline of the hair, face, eyes, and mouth
  • Add a thickness to both the hair and the face
  • Sew all the parts together! Hair-face-details
  • Finish the circuit
  • (1) Buy the electric materials: two red LEDs, one AA2 battery case
  • (2) Choose the resistors
  • Two 100 ohm – the light can get through the fabric and are not too dazzling
  • (3) Solder them together!
  • Place the circuit inside the face of the plush toy and adjust the position of the LEDs
  • Fill the face with cotton and close the face part
  • Finish!



The most difficult part I met is to sew the hair together. The black fabric is too thick so I cannot use the sewing machine. At first, I sew the thickness part to the front piece and then to the back piece. When sewing it to the back together, I use two steps: at first start in the middle of it and sew one half side, and then the other side. And it becomes more and more difficult when getting close the side.


Circuit diagram



The circuit has two LEDs, two 100 ohm resistors and a battery case with a switch. I use paralleling to connect the two LEDs so they won’t be affected by each other.


The name and the story

His name is Smile. This is a simple name and he has a simple hope to bring happiness to others.

Smile comes from a comic book and travel to the world where we live. During his travel, he found that smile is contagious, which means when he smiles to other people, they often smile back even they don’t know each other really. It always makes him feel happy, and he hopes others to feel happy too.

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