Literally everlasting birthday card using Arduino.

Work is in progress: prototype is ready, PCBs incoming!

Everyone received those cute birthday cards on their birthday, right? You read them with shining eyes and smile, then put it to your drawer or to the box of memories and barely read the text again.

But, what if you would have a cool handcrafted gift card which congratulates you with your birthday every year, provides you a candle to blow and also displays an unique birthday wish for this year? Well, this is what I have developed. I also should mention, that part of the idea is from here.

• While waiting for your birthday, you can turn the card on and see number of days, hours, minutes and seconds left to the birthday. If you press and hold button, current date, time and temperature will be displayed. Some cool songs from Undertale will also be playing.
• The card will wish you a happy birthday if you turn it on the birthday date! It will play the Happy Birthday song and offer you to blow a candle. Then it will show you a unique wish for this birthday date (they are stored in the FLASH memory).
• You can store at least up to 7 wishes (7 wishes = 7 years) of length around 150 symbols. This capacity can be increased if some songs will be removed or the code will be optimized.