Analog Potentiometers or Mechanical Potentiometers:
These are the standard variable resistors with sliding contact that can be varied by hand.
Digital Potentiometer or Electronic Potentiometers:
The wiper is digitally controlled by the MCU.The resistance between the 2 terminals are adjusted by the input signals
More reliable than mechanical potentiometers
Examples : AD5171 (I2C controllable ) and AD5206 (SPI controllable)
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