I made 3D Printed Unicorn Horn. It looks great when going out to the party and especially in the evenings. :)

Hello everyone,

Today I'm gonna make 3D Printed Unicorn Horn. I saw and did the project in Adafruit's website about a year ago but I could not find an opportunity to share it. It looks great when going out to the party and especially in the evenings. :)

I got the horn out of the 3D printer on the project. If you do not have a 3D printer, you can make the horn yourself with the materials what you want.

Let's start !

Step 1: Materials


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Step 2: Upload Code to Arduino Lilypad

First we start by uploading the code to Lilypad. Let's do the connection of USB Serial Converter - Lilypad as in the image. 
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  • Plug one end of the Micro USB into your computer and the other into the USB Serial Converter input. 
  • Open the Arduino IDE. In the Cards section, select your Lilypad and port number and load the code Arduino.
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You can find the code at Github or from here.

After we upload the code to Lilypad, we are done with FTDI and micro USB.

Step 3: Connection of NeoPixels

First we connect NeoPixels with each other.

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Solder the GND, DIN, 5V pins of the first NeoPixel to GND, DIN and 5V of the second NeoPixel respectively.

* What we need to pay attention in this section is to solder the short cables while connecting the NeoPixels.

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Step 4: NeoPixel-LilyPad Connection

  • Solder the GND of the first NeoPixel to the (-) pin (minus pin) of the Lilypad. 
  • Solder the second NeoPixel 5V to the (+) pin (plus pin) of the Lilypad. 
  • Solder the DIN of the second NeoPixel to pin 11 of the Lilypad.

Our links are ready!


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While doing NeoPixel and Lilypad connection, the cable is soldered a little long so that this can easily placed in the hat.

Step 5: Lilypad - Lipo Connection

  • We will solder JST Lipo cable to the (+) plus and (-) minus inputs of Lilypad.
  • Solder the red cable of the JST to the (+) plus pin of the Lilypad, and the black cable of the JST to the Lilypad's (-) minus pin.

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Step 6: UniCorn Horn & Hat

You can reach 3D design of Unicorn horn by the link. Link is here.

Put a hole in the front of the hat where the NeoPixels can pass. I pulled out the seams on that part, so the hat was not damaged.

Pass the NeoPixels from here.

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Place the Unicorn on the horn and sew it in the hat from the holes.

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Step 7: Sewing to the Hat

  • Place the Lilypad in the gap in the inside of the hat and then sew it in several places to fix it.
  • As in the image wrap the Lilypad and Lipo battery connection cables are visible from the back of the hat.
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Place the Lipo battery in the cavity inside the hat and sew it up as the same way.

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Step 8: Wear It !

After the sewing process is finished, Lilypad and Lipo battery are fixed to the place, you can attach to your hat.

And our project is ready ! When going to the party or going out in the evening, remember to pick up your Unicorn horn hat ! :)

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Hilal Güngör
Make something. #maker #diy #coder #crafter #WearableTech #Lilypad ❤

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