Regular ding-dong doorbells are fun and all, but it can be nice to put something a little more special by your front door. To that end, [Arpan Mondal] built this neat little piano doorbell to make ...

ESP32: Sketch uses 310749 bytes (23%) of program storage space. Maximum is 1310720 bytes. Global variables use 15388 bytes (4%) of dynamic memory, leaving 312292 bytes for local variables. Maximum is ...