1 mô đun mã hóa KY-040 xoay 360 độ tại Lotte Market

Giới thiệu 1 mô đun mã hóa KY-040 xoay 360 độ tại Lotte Market

Rotary encoder module
Working voltage: 5V
Number of pulses per revolution: 20


Rotary encoders can count the number of pulses output during forward and reverse rotation through rotation. Unlike a potentiometer, the rotation count is not limited. With the buttons on the rotary encoder, it can be reset to the initial state, that is, counting from 0.


working principle:
Incremental encoder is a rotary sensor that converts rotational displacement into a series of digital pulse signals. These pulses are used to control angular displacement. The conversion of angular displacement in Eltra encoder adopts photoelectric scanning YUAN principle. The reading system is based on the rotation of a radial index disk (code disk) composed of alternating light-transmitting windows and opaque windows, and is illuminated vertically by an infrared light source at the same time, and the light projects the image of the code disk onto the surface of the receiver . The receiver is covered with a layer of diffraction grating, which has the same window width as the code disc. The job of the receiver is to feel the changes produced by the rotation of the disc, and then convert the light changes into corresponding electrical changes. Then make the low-level signal rise to a higher level, and produce a square pulse without any interference, which must be processed by electronic circuits. The reading system usually uses a differential method, that is, two different signals with the same waveform but a phase difference of 180° are compared to improve the quality and stability of the output signal. The reading is formed on the basis of the difference between the two signals, thereby eliminating interference.