Digital Doorbell Buzzer module

Button Desk Lamp Combination of left and right buttons

Speed-shifting Fan Multi-level speed regulation of motor

Music Player Playing music with a buzzer

Choosing Machine Random number module

Noise Decibel Meter Functions of the built-in microphone

Smart Piggy Bank Variables and displaying data on the screen

Light-sensitive Curtains Light sensing function of the photoelectric sensor

Mousetrap Differences between static friction, sliding friction, and rolling friction

Simple Password Box Coordinates on the display screen and the touch point detection

Electric Folding Chair Bluetooth connection and Bluetooth control

Electronic Pet Dog The function of a multitasking program

Sweeping Robot Set and read address data

Food Delivery Robot Basic functions of the controller and program download