Holiday Notice: Order by Sep 29th for pre-holiday shipping. DFRobot will be on holiday Sep 30 - Oct 8, resuming shipping on Oct 9.
Valentine's Day is coming, are you worried about she/he likes you or not? Maybe you want to ask, but here is another way, put the finger into the heartbeat device, the data will show the answer.
PROJECTS ArduinoValentine's DayA dress with my painting of flowers on the fabric; fireflies in the flowers blink according to wearer's heart-rate.
PROJECTS ArduinoGravityValentine's Day