The "Interactive Cake" is intended to increase the enjoyment of significant moments in people's lives such as birthdays and weddings. I designed this cake with my baby and friend in mind. The birthday and wedding cakes need the user's input to turn on and blow out the LED candles. At the end of the user’s experience, he or she will hear the greeting messages accompanied by music.

“Interactive Birthday Cake” User Experience
1. When a child completes assembling the cake blocks, the child can light the LED candles and listen to the traditional “Happy Birthday” song.
2. When the child blows out candles, the LEDs are turned off and the child hears a cerebratory message such as "Happy Birthday" and applause sounds.



prototype pictures on Flickr

[birthday cake prototype video]

[prototype for connection test using copperfoil]
[flexiglas laser cutting plan]

[circuit design]

[flexiglas fabrication]


[Happy Birthday User Test]


[Happy Birthday Project demonstration]

“Interactive Wedding Cake” User Experience
1. When the bride and the groom push the buttons on the three-layer cake, the small bride and groom figures on the top of the cake get close to each other until they kiss.
2. When the small figures touch each other, the candle lights on the cake will gradually turn on from the top layer down to the bottom layer. The traditional wedding song will be simultaneously played. 3. When the bride and the groom blow out the candles on the cake, they will listen to their guest’s messages such as,  “I wish you life-long happiness”.


[wedding cake idea sketch]

[process for wedding cake - fabrication process of Wedding Cake on Flickr]

[Wedding Cake Test]


[Wedding Cake Project demonstration] Arduino Code : download zip file wedding_final_code.zip