Julia’s Draft Instructable v. 1

Hello! Here is my very preliminary draft. I will update this to reflect some of the very helpful feedback I got.



Audio recorder and playback system in the shape of a goose


My partner and I operate on very different and constantly changing schedules. He is a first year resident in Internal Medicine; I am a design grad student. Although we live together, we can go days without seeing each other. We would like to leave each other notes, but video messages on the computer and hand-written notes aren’t working for us. This device is mounted at my door and is an easy way to record a brief message on my way out that he can playback when he gets home.


Record audio
Playback audio
Clear audio recordings
Indicate new message with LEDs


Electronic parts:
Arduino Uno
Adafruit Wave Shield for Arduino Kit – v1.1
Electret Microphone Amplifier – MAX4466 with Adjustable Gain
AC Adaptor
Arcade buttons



 Step 1: Put the parts together

Follow Wave Shield assembly instructions here
Mount the microphone and speakers (more TK)
Create a circuit for the LEDs and push buttons

Step 2: Write the code

Load the WaveRP Library
Write code to link the functions for recording and playing back to button functionality
Write code to create connection between message status and LEDs

Step 3: Build housing

Cut out the GOOSE PANEL (or your choice of image) from MDF using the scroll saw (or laser cut if you are doing something complex)
Create shallow box to attach to the back
Sand and finish with paint*

* The housing can certainly be made of many materials—I just used MDF for this example because it is easy to work with and generally accessible

Step 4: Putting it all together

Mount the board to the back of the goose in the box
Thread the button and LED elements into the front of the goose in the designated places




Instructable First Draft (Rough)

The Mini Star-Shooter!

A fully controllable desktop disc launcher—

If you love to throw a disc (whether you call it Ultimate, Flatball, Fetch, or Frisbee) chances are you love it so much it’s hard to put the thing down before you go to sleep at night. You may even be one of those people that always has one in their bag, looking for any opportunity to toss during the day. But a 175 gram UltraStar can be hard to get away with throwing inside if you work in a tight office space. That’s probably one of the reasons DisCraft makes the Mini-Star, a 4.5” disc you can throw around in smaller spaces.


Here, you’re going to learn to up your indoor disc game with the Mini Star-Shooter!

The Star-Shooter is a desktop disc launcher for all your indoor disc launching needs! Controlled with a Wii nunchuck plugged into an Arduino, the Star-Shooter is an accurate, 3 axis disc cannon built for your desk.

AwesomeVideoorAction Photo TK

Here’s What you’ll need:


1+ Discraft Mini-Star Discs    Where to buy

4  ModelNumberTK Servo Motors – Where to buy

1 Nintendo Wii Nunchuck – Where to buy

1 WiiChuck Adapter for Arduino + header pins    Where to buy

Arduino Nano/Min/TK  – Where to buy

Soldering Iron with Solder  – Where to buy

Brushless DC motor  – Where to buy

Structure Materials  – Where to buy

Structure Materials  – Where to buy

Structure Materials  – Where to buy


PhotoMaterials TK

So, first things first! Gather the materials and take a look at what you’ve got and what you’ll be using it for!

Obviously, the disc is the projectile. Put it aside for now.  Yes… I know it’s hard not to throw around when you’re procrastinating.  It’s super cute and we love the Mini-Star. But you’ll have to curb your excitement just a little to focus on the task at hand!

Take a look at the nunchuck. This will be your command center. Before this is over, you’ll be able to use a combination of the joystick, trigger buttons, AND the accelerometer inside to precisely control your launcher. Don’t worry! You won’t have to damage the controller to get this done. Thanks to Tod at tidbit.com, you can plug it directly to your keyboard with the WiiChuck adapter.


What’s actually being controlled by the nunchuck is the servo motors and the DC motor.

Three of the servos run the three-axis movement of the launcher, the fourth drops the disc into a track, and the DC motor spins the disc out of the track. The functionality is pretty linear. Aim, start launcher, fire!


All of these functions funnel through an arduino board.


So Let’s get started!

First, we’ll go through the construction of the structure and housing.

3 axis servo structure

Launcher electronics housing


launching track

Now that we’ve finished the housing parts, let’s construct the electronic portion, wire up the arduino, and fit the whole thing together.

We’re putting it together before coding it so we can make sure it functions correctly as we code.

Here’s how to put it all together correctly.

Now, here’s the code:

I’ll walk you through all of the different functions and what physical controls and processes they reflect.


Understanding the nunchuck functions

controlling servos

controlling the DC motor

Thanks for sticking it out through my Intructable, everyone!  I hope to hear Mini-Star Sales start to go up in coming weeks. Please check back in as you make improvements or cool modifications! I’d love to see what anyone can do with this to make it even more fun! 

Bonus track!

Trash Can Horse!

“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




Rainbeats translator jacket

People have a mixture of emotional responses to the rain. Some people enjoy it, while others do not.  However, if you consider rain as a friend who is just telling a story to you, then you will love the feeling of touching it. I think the rain has its own emotion and this jacket uses music and light to translate the rain’s emotion into a physical experience for people. With the changing color of the LED sewed onto the jacket and the tempo of the beats, you can immerse yourself in the rainy scene.


So, here are the parts you should prepare:

A piece of DotStar digital LED stipe, Adafruit Pro Trinket, Lithium lon polymer Battery, etape liquid level sensor, resistors, Arduino Uno


1, Connect one end of the battery to the LED strip and the other end of the resister.

Complete the circuit by connecting the resister to the LED strip.


2, Sew the LED strip on the edge of the raincoat.


3, Prepare a plastic tube and dig a tiny hole on the bottom of it.


4, connected all the circuits with the etape in, then put it into the tube.


5, We should also made a small 3d printing triangle model which could be sewed on the top of the raincoat. It will help the tube collecting rain. Because the quantity of the rain will controls how fast the beats creates.


6, Now we come to the most difficult part – to write the programs in your Arduino.





Now, wearing your raincoat, Let’s embrace the rain.

Outfit Forecast


 – write use case

 – write narrative of product use

 – document each stage of the process

Prototype Code:

 – create IFTTT recipe (weather to Adafruit feed)

    – @ morning, afternoon and evening

understand weather data received by Adafruit feed

isolate desired data set

    – temperature, precipitation, sunlight

establish wifi connection to arduino

Prototype Display:

create icons

prototype for scale (Chipboard)

    – measure installation space

    – design model

    – assemble model

prototype for illumination (ABS)

    – model icons

    – print icons

    – design LED circuit

    – solder circuit

install prototype

    – connect to scale model?

Final Model:

link data to LED circuit

design final form

    – material?

assemble model


revisit product use case and narrative

collect all documentation

create film

finalize instructables post

Business Card Exchanger

Impress your potential employers by adding a theatrical element to the business card exchange.


This project takes you through the steps of how to create a box that will light up and open when it hears a specific knock.


There is an internal button that will allow you to reprogram the knock.


Here is a video to support the design:



Important Notes:

  • This box does not guaranteed job placement. It only attempts to create a way to leave a lasting impression through the business card exchange.


Step 1: Tools, Supplies, and Skills



Based on your level of experience this project could take several hours to complete.



To complete this project you should have a working knowledge of:

  • Soldering
  • Reading a wiring schematic
  • Working with Arduino and code
  • Working with Rhino



  • Solding iron and solder
  • Heat shrink
  • Wire stripper
  • Safety glasses



  • 1 Arduino
  • 1 stepper motor and motor drive
  • Leds
  • Wire
  • 1 Piezo speaker
  • 1 red led
  • 1 green led
  • 1 Transistor 2222
  • 1 2.2k ohm resistor
  • 1 10k ohm resistor
  • 1 1M ohm resistor
  • 1 small piece of perf board
  • 1 9 volt battery clip and 9v battery



This case was 3d printed, but you can make a box out of any material. I have outlined the steps of how to do the 3d modeling in step KP and also include the .stl file below. You can use the .stl file to directly output to a 3d printer. If you do not have access to a printer you can have it out sourced to companies like Shapeways.


Step 2: Program the Arduino


First, you should open up the Arduino program and attach your microcontroller to your computer. We are uploading the sketch first so that we can test the electronics during each step up the wiring set up.


#1: Download the sketch

Download the file xxxxx.pde at the bottom of this section, copy it to your sketchbook and upload to your Arduino.


Code overview:


Step 3: Lay Out and Test the Circuit


This step will outline how to breadboard the electronics. I have provided a schematic to diagram the breadboard. Since the code is already uploaded to the Arduino, you can test each element as you go to see if you did it correctly.


#1 Wire the Piezo Sensor

Connect the Piezo speaker between Analog pin 0 and the ground. Make sure to interrupt the connection with a 1M ohm resistor.


#2 Wire the LEDs

Connect the red LED to digital pin 4 and the green LED to digital pin 5. Make sure to put a 560 ohm resister in line with each of the LEDs.


#3 Wire the programming button

Attach the button to your breadboard and connect one side to 5v. The other side should be connected to digital pin 2 with a 10K resistor inline to the ground.


#4 Wire the stepper motor


Step 4: Model the Case

Next I will take you through the steps outlining how to model the case. If you do not want to use my box design, I have also attached a drawing that illustrates how the case functions so that you can apply the mechanics to another material. I have also attached the .stl file so that you can print the box yourself.


Step 5: Assemble

Now that your circuit is assembled and box printed, all you have left to do is put it all together.




Wake up hat -Dayoung

Hey guys,

Is it hard to wake up in the class?  Don’t you find yourself keep nodding? Put this W-hat on! This hat can be a answer!

 Step 1: Prepare all the materials

Arduino Uno

Accelerometer sensor

Adafruit Feather 32u4

Small battery

vibrating motor

wires,soldering iron

cap or hat

Step 2:  Mount the  Accelerometer sensor to a small breadboard 

Follow the steps outlined in the Adafruit website:


Step 3 : Attach accelerometer to your arduino

Step 4: Wire vibrating motor to circuit

Step  5: Upload code and test

Step 6: Put it altogether