The DS18B20 temperature sensor interface can be used for temperature measurement experiments (exclude DS18B20).:
LM35 temperature sensor interface (exclude LM35):
3296 precision adjustable potentiometer, providing analog port input (can be used to control LED brightness, rotate the angle of the steering gear, digital voltage, etc.):
The infrared integrated receiving socket can be suitable for any infrared remote control experiment. (exclude Infrared sensor):
Four-digit seven segment LED (using 74HC595 driver to save IO and learn SPI), can do digital tube display experiments (can display temperature, voltage, count value, etc.).:
Three independent buttons, one reset button, can do button experiments (man-machine interface).:
The buzzer can be used for sound experiment. :
Bluetooth, wireless interface, voice module, voice recognition module, can be used for wireless communication experiments:
