Rotary Encoder Module for Arduino Brick Sensor Potentiometer Knob Cap EC11

₪19.00

This product is a rotary encoder with an operating voltage of 5V and it generates 20 pulses per one full rotation. The encoder counts the output pulses when rotated in both directions without any limit. It can reset and return to its initial state when matched with the key on the encoder, meaning it can count from 0.

The encoder operates on the principle of transforming rotational displacement into a series of digital pulse signals, which are used to control angular displacement. This transformation process uses a photoelectric scanning principle. The reading system is based on the rotation of a radial dividing plate with alternating light and non-light windows, which is exposed to an infrared light source. The light reflects the image of the plate onto the surface of a receiver, which is covered by a diffraction grating with the same window width as the plate.

The receiver detects changes in the light plate rotation and transforms these light changes into electrical changes. This process amplifies low-level signals into high-level signals and generates square pulses without any interference, requiring a circuit to handle this process. The reading system typically uses a differential method, comparing two different signals with the same waveform but a phase difference of 180 degrees to improve the output signal quality and stability. This method forms readings based on the difference between the two signals, thereby eliminating interference.

Only 2 left in stock (can be backordered)

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Description

  1. Operating Voltage: 5V
  2. Pulse Number for One Circle: 20
  3. Rotary encoder can count the output pulse times by rotating positively and negatively. This counting method has no limitation, it can reset and come back to the  initial status if matching with the key on the encoder (that is to say it will count from 0)
  4. Operating Principle: Incremental encoder is a kind of rotary sensor which transforms the rotation displacement into a series of digital pulse signal. These pulses are used to control angular displacement. In Eltra encoder, the transformation of angular displacement adopts photoelectric scaning principle. The reading system is based on the radial dividing plate’s rotation of alternative light window and non-light window, and it will be exposed to infrared light source at the same time. The light will reflect the picture of plate on the surface of receiver. The receiver is covered by a diffraction grating, and it has the same window width with the plate. The operation of receiver is to detect the change of light plate rotation, then transform the light change into electric change. Increase the low level signal into high level and generate square pulse without any interference. This process needs circuit to deal with. The reading system usually adopts differential method, that is compare two different signals who have the same waveform bu the phase difference is 180 degree so as to improve the output signal quality and stability. Reading is formed on the basis of the difference between two signals, so it eliminates the interference.
Package includes:
1*Rotary Encoder Module Brick Sensor Development Round Audio Rotating Potentiometer Knob Cap for Arduino 5V

 

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