“Snail Antennae Bag” Tutorial


The bag looks aggressive? Not at all! Let’s do something to add more fun to the aggressive shape. Just think when you touch the spikes, they will retreat just like a snail’s antenna and several minutes later, they will gradually reach out again.

Here is the video.

This may makes us reflect on the relationship between being cool, isolated and more communication with people.

Wanna have your own snail antenna bag? Now it’s making time!

1. Let’s see the theory first
2. Tools and materials

  • A spiky bag
  • Arduino board
  • MPR121 capactive touch breakout
  • 12 mini servo motors
  • 12 stiff wires
  • 12 capacitive touch sensing
  • Cardboard paper
  • Conduct tape
  • Hot melt glue
  • needle nose pliers
  • scissors
  • electric soldering iron

3. Wiring

  • First, you will need to solder the headers to the MPR121 shield.
  • Next, you will need to add two male header pins to ADDR and IRQ pins on the top of the MPR121 shield. Make sure the long portion the pins are facing up as shown in the picture below.
  • Use a female/male jumper cable to connect the MPR121 IRQ pin to digital pin 4.
  • Then connect the servo to the Arduino board.
  • Glue the stiff wires to the servos and the wires connected to MPR121 shield.
  • Stick the conductive tape to the spikes on the inside.
  • Fix the servos on the Arduino board and put them into the spiky bag.

4. Coding




Final Project Ideas – Mou Xumeng

  1. A butterfly that will flutter their wings when it’s held in the hand and stop when you let it go.
  2. An emoji fan. If  you hold it in different ways it will show different emoji.
  3. A glass lamp which you add water to a certain height, it will light up.
  4. An umbrella with humidity sensor, if it rains the umbrella will light up.

Final Project Ideas – Gahee Kang

  1. The recorder that records 5 second before.
  • It constantly records and deletes. However when you press the button it saved what was recorded within the last 5 seconds.
  • Benefit- 1) do not need to hear back to edit or find where you want to go. 2)You don’t need to ask people to repeat again.


2. Closet door that tells you the weather today. 

  • Sensor is connected to a hinge of a closet door. When you open the closet door, voice will tell you the wether today(temperature, sunny or rainy).


3. Lighting teeth

  • A shape of teeth, like what you see in doctors offices. It lights up for 3 minuets. Each part lights up evenly during the 3 minuets.
  • It guides people to brush there teeth evenly. Not concentrated in one spot.


4. LinkedIn Ring

  • A Ring that contains your linkedIn account. When two people bump the rings. It automatically give them connections on the linkedIn.
  • Useful in party or fair for connection.


5. gratitude night light 

  • Why? – One way to be happy is being gratitude. Before I go to sleep, I write things that I felt appreciative of the day in my bed.
  • It is a night light that you put next to your bed. To turn off the light to go to sleep,  you have to write sentences that are appreciating your day on your phone.
  • When you upload you gratitude sentence the light goes off.
  • Maybe – the sentences get printed and become a little book.




Clink is a ring in three different sizes. You can put the ring on a cup and when you do cheers the music change. I used the Adafruit Audio FX Sound Board.



I put musics in the sound board and name them with the given format.

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This allows me to change music randomly. laser cut a acrylic sheet to make the ring and wraped it with conductive tape. when those rings meet. It starts the music.

The prototype model does not change music when I toast but I want to know if that is possible and how I can make that. Also, I wonder if the ring could have a battery and programed board inside so the real product could be a wireless.

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Toast 🍷🍷

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Composition : Sound Machine

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The concept behind water level and music is inspired by glass harps. The idea is that each glass is tuned to a different pitch by filling the glass with water until the desired pitch is achieved.

The futuristic hologram and reflective materials are inspired by the electronic music the instrument plays. I use translucent material to emphasize water reflection, light, and shadow.

I name is project “Composition” because you can compose your own music by playing with the water level in each container. In addition,  you can compose the 5 components in this set and place them in different environment to experience different lights and reflection effects.

Here is the video of how it works.


I have created an INSTRUCTABLES of the making of this sound machine. Please visit: http://www.instructables.com/id/Composition-Sound-Machine/

Here is the list of materials and tools I used :


– Translucent double-sided hologram acrylics thickness : 1/8″, size 12″ x 24″.

– Translucent double-sided mirror acrylic thickness : 1/8″, size 12″ x 24″.

– Clear acrylics Cylinder dia : 3 3/4″, height : 12″

– Clear acrylic Rectangular Tube dia 3 1/2″, height : 12″

– Frosted Acrylic

– One-sided mirror acrylics thickness : 1/8″

all from Canal Plastic 345 Canal Street, New York, NY 10013


– 2 plastic water taps


– Frosted 1″ plastic tube 24″ long

– Frosted 1/2″ plastic tube 24″ long

Home Depot


– 2 Arduino Board Uno


– Adafruit Audio FX Sound Board + 2x2W Amp – WAV/OGG Trigger -16MB


– 2 eTape Liquid Level Sensor


– 2 Small Speaker

– 16 LEDs

– Wires

– 4 nuts and bolts


– Soldering Tool

– Wire Snipper

– Utility Knife

– Plastic Cements

– Clear Kitchen and Bath Adhesive Sealant

– Hot Glue Gun

– Drilling Machine

– Laser Cutter Machine

The fabrication part begin with making outlines for laser cutting. Originally, I created 3D model in Rhinoceros and export each components to illustration outlines.

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Export all the Rhinoceros files to an Illustrator vector file for laser cutting.


Assemble the water container need extra attention. I use water proof silicone sealer for bathroom to prevent leaking. Plastic cement and acrylic solvent are adhesive materials I used. Once the LED light bulbs are put in place, you can reinforce and secure them with hot glue gun.

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​There are two parts that need to be soldered. The first part is the the LED bulbs. After putting all the bulbs in place, I solder additional 20 inches long wires to the bulbs. The second part is the sensor. I also solder about 24-inch-long wires to it.

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Arduino: The first step is to plug in eTape to your breadboard and use the following code to activate the sensor. There are two important things you need to know before we start. Firstly, since the tape detects the different distances of the liquid by the compress of hydrostatic pressure the sensor, the container dimension affects the pressure. Therefore, you should to test the tape with the container that you are using in order to get the exact reading. Second, the eTape works effective and accurately only when it is flat and straight. As a result, you should attach the tape to the container other flat and stiff material with double-sided adhesive tape, to get the tape to work properly.

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Uploading audio files to FX soundboard is very simple.

I downloaded mp3’s from open-sources. Then I used http://media.io to convert my mp3 file to .ogg. When Adafruit soundboard is plugged into the computer, you can drag the files into the drive. Rename the files as T00, T01, T02, T03.

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Conceal your Arduino boards, breadboards, speakers, and the messy wires in a box.

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Hands Up, Don’t Shoot

Since my project is available on Instructables, I’ll use this opportunity to go through some of the development of my project. I had to wire this thing up at least on three separate occasions, with increasing amounts of desperation. I first tried to do the whole thing on an Uno, but ran out of RAM. I tried to do the whole thing on a Micro, then realized that the timer infrastructure on the chip [which is different from the Uno’s chip] is different in precisely the way that I needed it to be the same for the code to work. I tried to use tilt switches – three at a time to make a ghetto accelerometer, which did work, even if it wasn’t the most reliable switch. Then I tried to use two boards together to make it work. I tried serial communication and then realized I could just digiwrite to one pin, and digiread it on the other side.

This became a theme in my work, where I bemoaned my lack of creativity and desire for simplicity. I could’ve just hooked up a transistor to a preexisting audio recorder [they sell on amazon for twenty dollars and lower], and hooked that up to an accelerometer, but alas, I thought of that too late. Anyway, here are the early prototypes of the circuit!

The first iteration of my soldering [it’s a mess]:


New and Improved Circuit with tighter wiring and a wrist case:

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I ultimately resoldered the circuit one more time to get it even smaller… I tried to stuff it in a pocket and then sew the pocket onto a pair of gloves, but realized that I was doing more work than I needed to. I ultimately bought some gloves that I used to complete the project. See the Instructable for more info!


RE – Inflatable Vest




Office workers are constantly hunched over their laptops and computers for long hours every day. This causes back pains and bad posture. The Inflatable Vest is an interactive reminder for people to correct their bad habits. Every 20 minutes bubbles will inflate, forcing the user to stretch back and manually deflate the bubble. This makes users engage in a short break to exercise their muscles and stretch out the back.


Inflatable Bubbles

Micro water pump: CS1730PW, DC6.0V

From McMaster-Carr:

Tube 1/16 ID: 51135K12

Tube 1/8 ID: 51135K15

Checking valve: 2987K45

Tube barbs: 53415K281

Reducing Connectors: 5463K47

Disposable Finger Cot: 5291T6

Rescue tape:


Vest Part

Silicon film (3 ft * 2 ft)

Rubber wire: (Found in Michaels)

Arduino Part

RTC Timer :


Aduino uno


Laser cutter

Make the bubbles

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Cut the finger cot to the size you want.

Bring two tubes with 1/8 ID (One short, one long), 125psi checking valve and 15psi checking valve.

Tie with rescue tape. Make it tight so air will not leak out.

Make 5 more

Make the inflatable system

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Build up the inflation system as the picture shows. Use reducing connecter to connect 1/16 ID tube and 1/8 Id tube.

Connect air pump to tube barb with the 1/16-ID tube.

*For all the connections, their ID must be matched up.

*Pay attention to the direction of checking valve

Test the bubbles with Arduino 

After wiring all the components, connect the Arduino to your computer or a 9V battery to power the pump. If your balloon is not inflating, check over your wiring.

When the balloon is inflated, turn off the pump and squeeze the balloon. Check if the air could leak out from the checking valve. Check for any air leaks in the checking valve.

Keep pumping up the balloon to test the 50 psi valve. If the air pressure in the balloon is under 50 psi, no leaks should occur. If the air pressure is over 50 psi, air should start to leak out of the valve.

*The instructions above show how to make the inflatable unit. You can try to design your own structure (provide suggestions or examples.

Make the vest

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In this part we’re going to make the balloons wearable. You can either buy a vest/shirt or make one by yourself.

Cut the silicon into two 2 ft by 1.5 ft pieces. Using the laser cutter to cut out the pattern.

Connect the silicon pieces together as pictures show.

Paste the Inflatable Part to the vest. What did you use to paste them together.

I also add EL wire to the vest to make it look cool.

Arduino part


Picture of Arduino part

You can edit the inflating time (pumpTimeron) and restart time (pumpTimeroff).

In my coding, the default time is:

pumpTimeron: 1 minute

pumpTimeroff: 15 minute


Toddler Bot 3000 voice activated educational parenting tool.

The Toddler Bot is a simple device created to illustrate how proper parenting could be practiced. This bot is made from a Paralax Shield Bot with a Electret mic from Ada Fruit. The ides of this device is that when you yell at it it will back up and run a way from you and if you speak in softer sweeter tones it would approach you.

Its on Instructables right now!!! Heres the link: http://www.instructables.com/id/Toddler-Bot-3000-by-Adam-Fujita-Voice-activated-ed/

<p><a href=”http://vimeo.com/114631251″>Toddler Bot 3000</a> from <a href=”http://vimeo.com/storiesforpaloma”>Stories For Paloma</a> on <a href=”https://vimeo.com”>Vimeo</a&gt;.</p>

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I began by opening the Shield Bot package and simply broke down all the parts to get the build going. There are lots of parts in this great kit and I only used about half of the small hardware for this kit. Its really exciting to have all of these parts for future builds. Here is the link to the Paralax website so you can purchase the kit if you need. You could piece together your own kit for much cheaper if you chose. I would have liked to do the same and to have built my own chasis if i could but for time purposes I bought the kit.


This project could go in many other directions ( no pun intended ) and I look forward to using the kit in other ways.

I also had to purchase an extra Arduino Uno R3 board that is not included with the Paralax kit. Here is the link to but it down below.


bot1 bot2 bot3 bot4

I also had to purchase an extra Arduino Uno R3 board that is not included with the Paralax kit. Here is the link to but it down below.


bot5 bot12 bot13 bot15 bot16 bot17 bot18 bot19 bot20   IMG_2855

This project could go in many other directions ( no pun intended ) and I look forward to using the kit in other ways.


<p><a href=”http://vimeo.com/114427877″>bot14</a&gt; from <a href=”http://vimeo.com/storiesforpaloma”>Stories For Paloma</a> on <a href=”https://vimeo.com”>Vimeo</a&gt;.</p>

This was a very simple set up. ‘Ive included a video of the mic in test mode.

<p><a href=”http://vimeo.com/114427876″>IMG 2624</a> from <a href=”http://vimeo.com/storiesforpaloma”>Stories For Paloma</a> on <a href=”https://vimeo.com”>Vimeo</a&gt;.</p>

I also had to purchase an extra Arduino Uno R3 board that is not included with the Paralax kit. Here is the link to but it down below.



These are the tools I used…

Scissors: Large and small

Screw drivers. 3 sizes of phillips. Extra small, small and medium.

Small needle nose pliers.


Power drill with 16th drill bit.

Sandpaper 320 grit. (not photographed)

Soldering Iron (not photographed)

Laser Cutter (not photographed)


I made a simple Adobe Illustrator file of the hexagonal wheels. I wanted them to be hex so there would be a rumbling and wonky movement to the bot like a toddler would have.

<p><a href=”http://vimeo.com/114427875″>IMG 2604</a> from <a href=”http://vimeo.com/storiesforpaloma”>Stories For Paloma</a> on <a href=”https://vimeo.com”>Vimeo</a&gt;.</p>

Also included in the Parralax Shield Bot kit are all the codes to test the circuit and the servos.

Attached in this step is the code for the Toddler Bot 3000.


I decided to highlight that but spray painting my circuit diagram on the mean streets of Bushwick Brooklyn. This is a simple setup of one cable to 3.3 volt (red) the Ground (black) and the Analog0. (yelllow) The other wires in red and white along the top are for the servos.