KY-040 Rotary Encoder Module


Recommended for Arduino starter!

10 in stock

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SKU: MDU-INP-KEYPAD-KY040 Category: Tags: ,


Keyes KY-040 rotary encoder is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in. It?s a great device for stepper and servo motor control. You could also use it to control devices like digital potentiometers.


  • Operating voltage : 5V.
  • Pulses/360? Rotation : 20.
  • Output : 2-bit gray code
  • Mechanical Angle : 360? continuous.
  • With built in push button switch (push to operate)
  • Dimensions : 30 x 18 x 30 mm.
  • Compatible with Arduino/Raspberry Pi controller board.



Additional information

Weight 8 g
Dimensions 25 × 20 × 30 mm