Picture of 3D crocodile/lion puzzle
This is a fun way for children and their parents to create a 3d character whilst getting some basic circuitry skills. The pieces are laser cut on cardboard so kids can paint them. Enjoy!
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Step 1: Materials

Picture of Materials
You will need to laser cut on cardboard the designs of the crocodile and lion head for this project. You can also hand cut the forms on the cardboard although it will be more difficult.

- cardboard
- 2 LEDs
- copper tape
- 1 4V battery
- solder
- solder iron
- paint

Step 2: Place Copper tape

Picture of Place Copper tape
The first thing to do is make the circuitry with copper tape. You need to get the tape position exactly at the same heights of each piece of cardboard in order for them to connect when the animal is assembled.
First, tape the crocodile's mouth as the drawing shows allowing a nice space for the LEDs to make contact. Repeat this process with both sides; they should be exactly the same.
Lastly, place the copper tape as the photo shows for the lions head. Go all the way inside with the copper tape through the gap for the battery. This will ensure contact and hence a good connection through the pressure between the battery and the hole with copper tape.
Look at the photo of the assembles crocodile pieces and the lion's head. The copper tape should be perfectly aligned.
Place the battery through the lion head shape.
carlamarin (author) 1 year ago
I am sharing a project for my Computing Craft class and part of my thesis project. I am currently part of the MFA Design and Technology program at Parsons. I designed this project for parents and children to do together, and for the little ones to begin immersing themselves in basic circuitry concepts. Hope you enjoy it as much as I did!