In ARDUINO we have 20 I/O pins, so we can program 20 pins of UNO to be used as either input or output. A ROTARY ENCODER is used to know the position of movement and angular movement of a motor or axis ...

Pressing the encoder button saves the current OSCCAL register value to the EEPROM. Arduino IDE settings for ATTINY85: Schematic for the FreqCal rotary encoder programme: Now upload the ...