Flowed Light

Hello Everyone! This is my project Flowed Light.

The Flowed Light is an hourglass light which can go off gradually.

When you turn it upside down, it will light up in rainbow color. And when you turn it back, it will all change to white and go off gradually from the top to the bottom.

It can be used as a Pomodoro light and a night light suited for people who don’t like to sleep in a dark environment.




  • Glass bottle
  • Hourglass (3D printing)
  • Addressable LED strip (RGBW)
  • Tilt switch
  • HUZZAH & Circuits



  • Purchase materials
  • 3D model the hourglass according to the glass bottle’s size
  • 3D print the hourglass (print-bath-clean)
  • Learn and finish the coding
  • put the circuit into the hourglass
  • stick the LED strip onto the surface of the hourglass
  • HUZZAH & Circuits



  • Small space!!!!!!
  • 3D printing (size & structure)
  • How to make it portable
  • How to hide the circuit
  • How to stick the LED strip onto the surface of the hourglass
  • How to put the hourglass with LED strip into the bottle

I learned a lot from both the formation and coding from this project. I met a lot of difficulties on the challenges above, especially the small spacing of the product makes everything harder. And thank Becky, Oya and Helen for help! 🙂

Piggy Bank: Half Marathon Training Progress Lamp

As a reluctantly avid runner, I like to create incentives for me to stay on top of my running progress. For this project, I’ve created IFTTT applets and a lamp that does the following:

Screen Shot 2018-12-12 at 7.52.49 AM.png

Here are parts of the process below.  You can view the full instructions on my Instructables page

To start, I created an applet that logs every run in a Google spreadsheet.  In it, I edited the first 13 lines with formulas and benchmark numbersStrava Run Log.png

Once that was set up, I setup an Adafruit feed that collects data from IFTTT applets that are triggered every time I hit a certain benchmark.  Each time I hit a weekly benchmark, data unique to the week gets sent to my Feather Huzzah board and lights up the number of LEDs that corresponds to where I am in the training schedule

Strava to Google Sheets.png


Screen Shot 2018-12-12 at 8.12.49 AM.pngThen, I moved on to laser cutting and assembling the lamp.  I had the most fun while doing this!  IMG_5776.jpgIMG_5768-2.jpg


Then, came the soldering.  IMG_5772.jpg



I actually had to re-solder the entire circuit using different LEDs because the sequins I got from Tinkersphere actually were not compatible with my code.  Luckily I had other RGB LEDs readily available and the second time around was much faster than the first! I ended up with a much cleaner circuit as pictured above.  (special shoutout to Oya of the VFL for staying with me until 1AM to help me troubleshoot.  You are an angel)

I’m so thrilled with the final product and will definitely be using this when training for my next race.





Bloomie is a product for people to share their emotions through lights. When you trigger certain interaction, the message will be sent to the other person’s Bloomie. By using Bloomie, you can share your frustration, excitement and console with people who you love. Bloomie has three interaction functions.

  1. When you are frustrated or disappointed, you can shake Bloomie, which will make the flowers blinking in red frantically.
  2. You can make your frustrated friend calm by sending light signal by using the first button. Or you can just use when you are feeling calm.
  3. When you press the second button, the flowers will blink in various colors. Share your excitement and joy by using this button!

To further develop this project, I would love to make the buttons easy to find and press. Also, I would like to design a DIY Bloomie Kit for people to make their own by using different interactions.

Bloomie-Interactions from Shin Young Park on Vimeo.

Bloomie from Shin Young Park on Vimeo.


Outlet Master


Felix and I built the brain of an aquaponics system. It is an outlet box with four outlets each of which is controlled by google calendar. It turns out that this Google calendar controlled outlet box has plenty of other applications beyond aquaponics.

Check out our video:

Check out our Instructable:


Below is the foregone aquaponics system:aquaponic shelf.jpg

Final: Automatic Night Light



I made the Automatic Night Light named as SWIMCLOUD. It would detect the darkness and lights up by itself when people turn off the lights, so I do not need to turn on the night light by myself and do not need to afraid the darkness anymore.


However, I used the transparent acrylic to build my model because of inspiration by below these photos. I think if I let people know what is the mechanism inside, and how it works, and it might raise the curious of this products and make it different from the common night light.

Then I laser cut the components which I want to build my model and used acrylic adhesive to stick it together.

For the circuit, I used the PIR sensor to detect the darkness on the Arduino board. And put cotton in the transparent cylinder to diffuse the lights, and make some change to let the lights suitable for the environment when people sleep.

Here is the circuit I built.


And here are the process of model building.




Here is the coding I used

#include <Adafruit_NeoPixel.h>
const int ldrPin = 5;
const int ledPin = 9;
const int brightness = 100;
#define PIN 9
Adafruit_NeoPixel strip = Adafruit_NeoPixel(8, PIN, NEO_GRBW + NEO_KHZ800);

int ldrState = 0;

void setup() {
Serial.begin( 9600 );
pinMode(ledPin, OUTPUT);
pinMode(ldrPin, INPUT);
strip.show(); // Initialize all pixels to ‘off’

void loop() {
ldrState = analogRead(ldrPin);

if (ldrState <= brightness) {
colorWipe(strip.Color(0, 0, 0, 255), 50);
} else {
colorWipe(strip.Color(0, 0, 0, 0), 50);

Serial.print(“LDR Value = “);
Serial.println( ldrState );

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);

Hello from Seona

Hi everyone!



My name is Seona! It’s pronounced as SUH – NAH. I was born and raised in Seoul, South Korea but I’ve been living in Virginia for the past ten years. I’m really excited to start my graduate career with PoD in this sleepless city!

While in college, I studied public health + urban studies and I’ve worked with healthcare policy firm where I’ve used Tableau to make data visualization (like reports for policymakers). I’m really excited to go beyond reports and make projects related to movements/dance, making cities livable, or interactive things. I think my goal is to be more comfortable with getting my hands dirty and making and eventually getting out of my comfort zone to make a product!

You can often find me dancing salsa, visiting pop up exhibitions or swimming around to find something new in the city. I look forward to getting to know all of you!