A creative DIY project has transformed the usual doorbell into a charming musical experience. Arpan Mondal designed a piano-style doorbell that allows visitors to announce their arrival with a melody instead of the typical chime. His invention replaces the standard doorbell sound with five playable piano keys, each producing a unique note when pressed.
Mondal built the device using an ESP32 microcontroller, which detects the position of five 3D-printed piano keys and plays corresponding piano sound samples. To enhance the tactile experience, he incorporated micro limit switches under the keys, giving them a soft, satisfying click reminiscent of real piano keys.
While the first electric doorbell was invented in 1831 by Joseph Henry, the Smithsonian Institution’s first secretary, tuneful doorbell chimes didn’t become common until the 1930s.
So, if you’re considering a new doorbell for your home, why not think beyond the typical “ding dong” and welcome guests with a delightful musical note?