Peripherals

Peripheral: a piece of equipment that can be connected to the microcontroller or to the microcontroller board.

Sensors

• Pressure
• Temperature
• Light level
• Magnetic field
• Gas flow
• Tilt
• Acceleration
• Contact
• etc.

Actuators

• Relay
• Motor
• Stepper motor
• Servomotor
• etc.

Other peripherals

• Printer
• Display
• OBD connector (On-Board Diagnostics)
• RFID tag reader
• PC (!)
• etc.

Reminder: a peripheral is connected to the MCU or to the CPU by an interface.

But an interface can be seen as a peripheral, depending on the point of view.