Encoder arduino

Rotaty Encoder Module trông giống 1 module biến trở nhưng có ngõ ra dạng xung số. Bằng việc xoay núm vặn, ngõ ra xung của 2 kênh sẽ thay đổi với 1 độ lệch pha xác định (90độ) giúp phân biệt được chiều xoay. Đếm số lượng xung ngõ ra sẽ cho biết vị trí góc xoay, vị trí này là không giới hạn. Đồng thời module cũng cung cấp 1 nút nhấn có thể được lập trình để trở thành 1 nút reset giá trị đếm. Thông số kỹ thuật - Ngõ ra 2 kênh dạng xung khi xoay, giống như 1 encoder, còn gọi là Volume số. - Có ngõ ra số on/off như 1 nút nhấn cơ. - Góc xoay không giới hạn, chiều quay có thể được phân biệt theo dạng xung ngõ ra của 2 kênh. - Chân kết nối kiểu hàng rào cắm (5 chân). - Điện áp hoạt động 5VDC Ứng dụng - Điều khiển tốc độ động cơ. - Dimme

Bộ Arduino Advanced Kit [Bộ Kit Arduino nâng cao] gồm: Một KIT Arduino Uno R3 và một số lượng lớn các Module cần thiết sẽ giúp bạn xây dựng các Dự án sáng tạo . Đặc biệt là các bạn mới tiếp xúc và làm quen với Arduino, muốn đi từ Cơ bản đến Nâng cao. TẠI SAO CHỌN BỘ ARDUINO NÂNG CAO? - Số lượng Module (Cảm biến) nhiều => Tiếp xúc nhiều loại Module - CODE MẪU TẶNG KÈM => Học nhanh + Hiệu Quả - Sử dụng Arduino Uno R3 chip cắm (Chip nạp ATMEGA16U2) - Với Bộ Advanced thực hành: UART, I2C, SPI, IN-OUT, ANALOG,... =>LƯU Ý: MODULE LCD+I2C (Một số bộ KIT thị trường chỉ LCD thường, không có I2C tích hợp, nên khó học về LCD); MODULE THỜI GIAN THỰC, TẶNG KÈM PIN Ad sẽ gửi tặng bạn bộ tài liệu ebook Adruino nâng cao (HƯỚNG DẪN + CODE MẪU) đi kèm sản phẩm. Bộ Arduino Advanced Kit bao gồm: - KIT ARDUINO UNO R3 – Chíp Cắm (chip nạp ATMEGA16U2)        1 - Cáp Nối UNO R3 (USB Cable)                 1 - LCD1602 Xanh Dương   (Kèm I2C)          1 - Động Cơ Servor SG90                              1 - Module ULN2003                                      1 - Động Cơ Bước 28BYJ-48                         1 - Kẹp pin 9v (Battery clip)                            1 - Triết áp đơn 10K (Potentiometer)             1 - Dây bẹ 2 đầu đực –cái                     10(sợi)  - Bó dây nối đực-đực                         30 (sợi) - Bo Test (Breadboard 16.5×5.5cm)           1 - Led Matrix 8×8                                         1 - Led 7 Thanh 4 Số (4×7 segment)            1 - Led 7 Thanh 1 Số (1×7 segment)            1 - Còi chip  (Buzzer )                                   2 - Vỏ Nút Nhấn B3F (tròn)                           4 - Nút Nhấn 4 Chân B3F (Switch)               4 - Cảm biến rung (SW-520D)                      2 - IC ghi dịch cho LED (IC 74HC595)          1 - Cảm biến lửa (Flame sensor)                  1 - Mắt Thu Hồng Ngoại (Infrared receiver)  1 - Remote Hồng Ngoại (21 phím)                1 - Cảm biến nhiệt độ (sensor LM35)           1 - Điện trở quang (Photoresistor)                3 - Điện trở 220R                                          10 - Điện trở 1K                                              10 - Điện trở 10K                                            10 - Led Đỏ (5mm)                                          10 - Led Xanh Lá (5mm)                                 10 - Led Vàng (5mm)                                      10 -Module điều khiển 2 chiều (Joystick)        1 - Module RGB (led 3 màu)                         1 - Module RFID RC522 13.56MHz              1 - Bàn Phím Ma Trận 4×4 V2                      1 - Module thời gian thực (DS1307) +PIN     1 - Module relay 5V                                       1 - Module cảm biến âm thanh                     1 - Module nhiệt độ, độ ẩm (DHT11)            1 - Module cảm biến mực nước                   1 - Hộp nhựa đựng bộ ARDUINO KIT          1 #arduino #arduinostarterkit #arduinonangcao #arduinocoban #bohoctaplaptrinhArduino #

welcome to easyturn.vn 🌸ĐẦY ĐỦ 🌸Integrated circuits rotary encoder KY-040 brick sensor development for arduino Product introduction: 100% Brand new and high quality. Material: Electronic components + PCB Working voltage: 5V Pulse circle: 20 Working principle: Incremental encoder is a rotating sensor that converts rotational displacement into a series of digital pulse signals. These pulses are used to control angular displacement. In Eltra encoder, the principle of photoelectric scanning is used to convert the angular displacement. The reading system is based on the rotation of the radial indexing disc (code disc) consisting of alternating light transmission windows and non-light transmission windows. At the same time, it is illuminated vertically by an infrared light source, and the image of the code disc is projected onto the receiver surface by light. The receiver is covered with a diffraction grating, which has the same window width as the code disk. The work of the receiver is to sense the changes caused by the rotation of the optical disk, and then convert the light changes into corresponding electrical changes. Then the low level signal is raised to a higher level, and the square pulse without any interference is generated, which must be processed by electronic circuit. In order to improve the quality and stability of the output signal, the reading system usually adopts the differential method, which compares two different signals with the same waveform but with a phase difference of 180 degrees. The reading is based on the difference between the other two signals, thus eliminating interference. Packaging includes:1*Integrated circuits rotary encoder KY-040 #circuits #development #encoder #🌸Integrated #sensor #arduino #🌸ĐẦY #ĐỦ #KY-040 #rotary #for #brick #ĐỦ-🌸Integrated #rotary-encoder #brick-sensor #circuits-rotary #KY-040-brick #development

welcome to icebrightbeauty.vn ❀CÔNG CỤ❀Integrated circuits rotary encoder KY-040 brick sensor development for arduino Product introduction: 100% Brand new and high quality. Material: Electronic components + PCB Working voltage: 5V Pulse circle: 20 Working principle: Incremental encoder is a rotating sensor that converts rotational displacement into a series of digital pulse signals. These pulses are used to control angular displacement. In Eltra encoder, the principle of photoelectric scanning is used to convert the angular displacement. The reading system is based on the rotation of the radial indexing disc (code disc) consisting of alternating light transmission windows and non-light transmission windows. At the same time, it is illuminated vertically by an infrared light source, and the image of the code disc is projected onto the receiver surface by light. The receiver is covered with a diffraction grating, which has the same window width as the code disk. The work of the receiver is to sense the changes caused by the rotation of the optical disk, and then convert the light changes into corresponding electrical changes. Then the low level signal is raised to a higher level, and the square pulse without any interference is generated, which must be processed by electronic circuit. In order to improve the quality and stability of the output signal, the reading system usually adopts the differential method, which compares two different signals with the same waveform but with a phase difference of 180 degrees. The reading is based on the difference between the other two signals, thus eliminating interference. Packaging includes:1*Integrated circuits rotary encoder KY-040 #arduino #for #brick #circuits #CỤ❀Integrated #sensor #rotary #KY-040 #❀CÔNG #encoder #development #circuits-rotary #for-arduino #encoder-KY-040 #CỤ❀Integrated-circuits #sensor-development #rotary-encoder #development

Product introduction: 100% Brand new and high quality. Material: Electronic components + PCB Working voltage: 5V Pulse circle: 20 Working principle: Incremental encoder is a rotating sensor that converts rotational displacement into a series of digital pulse signals. These pulses are used to control angular displacement. In Eltra encoder, the principle of photoelectric scanning is used to convert the angular displacement. The reading system is based on the rotation of the radial indexing disc (code disc) consisting of alternating light transmission windows and non-light transmission windows. At the same time, it is illuminated vertically by an infrared light source, and the image of the code disc is projected onto the receiver surface by light. The receiver is covered with a diffraction grating, which has the same window width as the code disk. The work of the receiver is to sense the changes caused by the rotation of the optical disk, and then convert the light changes into corresponding electrical changes. Then the low level signal is raised to a higher level, and the square pulse without any interference is generated, which must be processed by electronic circuit. In order to improve the quality and stability of the output signal, the reading system usually adopts the differential method, which compares two different signals with the same waveform but with a phase difference of 180 degrees. The reading is based on the difference between the other two signals, thus eliminating interference. Packaging includes:1*Integrated circuits rotary encoder KY-

Operating voltage: 5V Number of pulses: 20 The rotary encoder can count the number of pulses output in the forward and reverse directions by rotation, and the rotation count is not like the potentiometer. This rotation count is not limited. With the key on the rotary encoder, you can reset to the initial state, that is, counting from 0. working principle: An incremental encoder is a rotary sensor that converts a rotary displacement into a series of digital pulse signals. These pulses are used to control the angular displacement. The conversion of the angular displacement in the Eltra encoder uses the principle of photoelectric scanning. The reading system is based on the rotation of the radial indexing disc (code disc) consisting of alternating light transmission windows and opacifying windows, and is irradiated vertically by an infrared light source, and the image of the code is projected onto the receiver surface The The receiver is covered with a layer of diffraction grating, which has the same window width as the encoder. The work of the receiver is to feel the changes that occur when the disc rotates, and then convert the light changes to the corresponding electrical changes. And then the low level signal to a higher level, and produce no interference with the square pulse, which must be used to deal with electronic circuits. The reading system usually uses a differential mode, which compares the two signals with the same waveform but with a phase difference of 180 ° in order to improve the quality and stability of the output signal. The readings are formed on the basis of the difference between the two signals, thus eliminating the interfer

TÊN SP: Module Arduino Uno R3 chíp dán ỨNG DỤNG: -Arduino Uno R3 được ứng dụng rất mạnh mẽ trong cả học tập và chế tạo sản phẩm, từ những thiết bị đơn giản đến phức tạp. -Ứng dung trong học tập : Điều khiển đèn LED nhấp nháy, xử lý tín hiệu cho xe điều khiển từ xa, làm một trạm đo nhiệt độ – độ ẩm và hiển thị lên màn hình LCD …. -Ứng dụng trong đời sống : Làm thiết bị nhà thông minh, khóa của tự động, làm sản phẩm nông nghiệp thông minh … -Ứng dụng trong công nghiệp : Hiện nay Arduino được sử dụng khá nhiều trong công nghiệp vì giá thành của nó khá tốt , độ ổn định cao. -Arduino Uno là board mạch rất phổ biến trong các dòng Arduino hiện nay, bạn chỉ cần kết nối -Arduino với máy tính PC hoặc Laptop bằng cáp USB là đã có thể sử dụng và nạp code cho nó một cách rất dễ dàng. Lưu ý : Điện áp khuyên dùng cho arduino khi cấp nguồn ngoài là từ 7-12v , không nên dùng với điện áp vao hơn có thể gây hư hỏng mạch THÔNG SỐ KỸ THUẬT: -Chip điều khiển : ATmega328P-AU -SRAM : 2 KB (ATmega328) -EEPROM : 1 KB (ATmega328) -Tốc độ : 16 MHz -Nguồn nuôi mạch : 5V từ cổng USB hoặc 7-9v từ giắc tròn DCIN -Số chân Digital : 14 chân -Số chân PWM : 6 chân -Số chân Analog : 6 chân -Dòng ra trên mỗi chân tối đa : 40mA -Dòng ra trên chân 3v3 tối đa : 150mA -Dung lượng bộ nhớ Flash : 32 KB – ATmega328 ( 0.5 KB sử dụng cho bootloader ) TÀI LIỆU: -Để nạp code cho board Arduino trước tiên chúng ta cần cài driver cho máy tính : tải driver CH340 tại đây. LINK https://drive.google.com/open?id=1VLFqPhzv--fim-4yDmWKwA59Jqr1BoMK -Sơ đồ ra chân của board arduino :(HÌNH 5) -Arduino.cc Đây là trang web chính thức của nhóm tác giả Arduino, nó chưa vô vàn kiến thức cho cả người mới bắt đầu và cả những dự án lớn nữa. Đây là trang web tiếng anh nên chúng ta có thể vào vừa học vừa tăng khả năng dịch tiếng anh nhé -Arduino.vn Cũng giống như Arduino.cc, trang web này chứa rất nhiều project lớn nhỏ do cộng đồng arduino việt nam phát triển, tất nhiên nó là tiếng việt nhé nên anh em vào lựa mấy dự án hay mà chiến thôi. -Phần mềm Arduino IDE : Phần mềm này có thể down tại Arduino.cc, mình đặt luôn link download tại đây cho ai ngại vào kia tìm nhé : Download tại đây. LINK https://www.arduino.cc/en/Main/Software #arduino #UnoR3 #Uno #arduino #SMD #lậptrình #laptrinh #module #machDien #mạchđiện #Module #Arduino #Uno #R3 #chíp

360 Degrees Rotary Encoder Module Bri Sensor Switch Development Board for Arduino 5V Rotary Encoder Module Bri Sensor Development Rotating AVR Singlechip for Arduino Descriptions: 1. By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency. 2. Unlike rotary potentiometer count, this rotation counts are not limited. 3. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0. 4. It is suitable for those who love DIY or are interrested in single chip, such as: teachers and students to learn the actual microcontroller courses and so on. Specifications: Material: Electronic components + PCB Size: approx. 31*19*29mm /1.22*0.75*1.14" Working voltage: 5V Pulse circle: 20 Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Dear Vietnamese friends, we are sellers from China. Our products are rich and varied, and there are plenty of stos. If you have any questions, you can ask me.

We have many products in our warehouse, our warehouse is in Shenzhen . Genaral it need 1-2weeks arrive your hand. if you subimit order , we will handle in 1-3days.if you chat with us , we donot reply you, donot worry , we are try to handle your order.so pls donot cancel o

Welcome!Best wishes! Features: 100% Brand new and high quality. Material: Electronic components + PCB Size: About 31 * 19 * 29mm / 1.22" * 0.75" * 1.14" Main color: Black Working voltage: 5V Pulse circle: 20 By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer count, this rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0. Package Included: 1 x Rotary Encoder Module Brick Sensor Development Board For Arduin

We have many products in our warehouse, our warehouse is in Shenzhen . Genaral it need 1-2weeks arrive your hand. if you subimit order , we will handle in 1-3days.if you chat with us , we donot reply you, donot worry , we are try to handle your order.so pls donot cancel o

Product information By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer counter, which species rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0. How it works: incremental encoder is a displacement of the rotary pulse signal is converted to a series of digital rotary sensors. These pulses are used to control angular displacement. In Eltra angular displacement encoder conversion using a photoelectric scanning principle. Reading system of alternating light transmitting window and the window is not consisting of radial indexing plate (code wheel) rotating basis, while being an infrared light source vertical irradiation light to the code disk image onto the receiving on the surface. Receiver is covered with a diffraction grating, which has the same code disk window width. The receiver's job is to feel the rotation of the disc resulting changes, and change the light into corresponding electrical changes. Then the low-level signals up to a higher level, and generates no interference square pulse, which must be processed by electronic circuits. Reading systems typically employ a differential manner, about the same but the phase difference of the two waveforms different by 180°compared to the signal in order to improve the quality and stability of the output signal. Reading is then the difference between the two signals formed on the basis,thus eliminating the interfer

❀❀ highbuying ❀❀ Features: 100% Brand new and high quality. Material: Electronic components + PCB Size: About 31 * 19 * 29mm / 1.22" * 0.75" * 1.14" Main color: Black Working voltage: 5V Pulse circle: 20 By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer count, this rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0. Package Included: 1 x Rotary Encoder Module Brick Sensor Development Board For Ar

Product Introduction 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 interfer

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✿✿ fashionapple ✿✿ Features: 100% Brand new and high quality. Material: Electronic components + PCB Size: About 31 * 19 * 29mm / 1.22" * 0.75" * 1.14" Main color: Black Working voltage: 5V Pulse circle: 20 By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer count, this rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0. Package Included: 1 x Rotary Encoder Module Brick Sensor Development Board For Ar

Can give E6B2 OVW TRD encoder, such as can be fixed on the market through 20 type, diameter, 38, 40 of the encoder Optical axis comes with M8 screw holes, you can add the length of the shaft according to your actual use Usage:？Industrial DIY Supplies:？Metalworking Standard or Nonstandard:？Nonstandard Structure:Single-side Bracket Weight:265g Material:Aluminum alloy Color:Silver Overall Size:14x9.4x4.8cm /5.51x3.70x1.88 Inch( L x W x H) Package Contents: 1 * Encoder Mounting Bracket 3 * fixing screws 2 * locking screwOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1

Operating voltage: 5V Number of pulses: 20 Packaging includes: 4Pcs module The rotary encoder can count the number of pulses output in the forward and reverse directions by rotation, and the rotation count is not like the potentiometer. This rotation count is not limited. With the key on the rotary encoder, you can reset to the initial state, that is, counting from 0. Working principle: An incremental encoder is a rotary sensor that converts a rotary displacement into a series of digital pulse signals. These pulses are used to control the angular displacement. The conversion of the angular displacement in the Eltra encoder uses the principle of photoelectric scanning. The reading system is based on the rotation of the radial indexing disc (code disc) consisting of alternating light transmission windows and opacifying windows, and is irradiated vertically by an infrared light source, and the image of the code is projected onto the receiver surface The The receiver is covered with a layer of diffraction grating, which has the same window width as the encoder. The work of the receiver is to feel the changes that occur when the disc rotates, and then convert the light changes to the corresponding electrical changes. And then the low level signal to a higher level, and produce no interference with the square pulse, which must be used to deal with electronic circuits. The reading system usually uses a differential mode, which compares the two signals with the same waveform but with a phase difference of 180 ° in order to improve the quality and stability of the output signal. The readings are formed on the basis of the difference between the two signals, thus eliminating the interfer

#Ceiling #Type #9V #Battery-Powered #Independent #Temperature #Detector #Module #capteur #capteur #de #cadence # #AS5600 #Encoder Ceiling Type 9V Battery-Powered Independent Temperature Detector Module capteur capteur de cadence AS5600 Encoder Magnetic Induction Angle Measurement Sensor Module 12bit Precision module de capteur pour arduino module capteur sm6000 Détecteur de fumée Détecteur de température Alarme d'ionisation 100% Brand new and high quality Features: Hard-wired alarms include battery backup in the event of a power failure Photoelectric and ionization sensors provide comprehensive fire detection One button makes the alarm easy to test or silence monthly during false alarms. Temperature range: 4°C~38°C. Two lock functions help to show that the battery in the system is low or alarm Optipath 360 patented technology provides a 360-degree smoke alarm. Send T3 pattern Equipped with dual photoelectric and ionization smoke sensors, which can quickly detect rapid burning and fire. Speed up job site steering with easy-to-install, trusted home security alarms. Specification: Working voltage: 9V (V) Alarm current: 50 (mA) Detection angle: 360 Quiescent current: 10 (uA) Working temperature: -10~+50 (℃) Detection distance: 20 (m) Scope of application: residential areas, office buildings, bars, hotels, accommodations and other places can be used Type: independent temperature sensor + smoke detector Installation method: Ceiling type Alarm mode: sound and light alarm Battery: 9V battery (include) Product size: 115*72*47mm /0.3772965885*0.2362204728*0.1541994753 inch Package Included:1 pcs *Independent temperature sensor + smoke detector (other accessories demo in the picture is not included.) Notes:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you did. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank

[xo94bsy]Rotary Encoder Module for Arduino Brick Sensor Development Audio PotentiometerProduct Introduction: 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 include: 1*Rotary Encoder Module Brick Sensor Development Round Audio Rotating Potentiometer Knob Cap for Ardui

[cheesenhbn]KY-040 Rotary Encoder Module Brick Sensor Development Board For ArduinoFeatures: 100% Brand new and high quality. Material: Electronic components + PCB Size: About 31 * 19 * 29mm / 1.22" * 0.75" * 1.14" Main color: Black Working voltage: 5V Pulse circle: 20 By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer count, this rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0. Package Included: 1 x Rotary Encoder Module Brick Sensor Development Board For Ar

[cheesenhbn]Rotary Encoder Module for Arduino Brick Sensor Development Audio PotentiometerProduct Introduction: 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 include: 1*Rotary Encoder Module Brick Sensor Development Round Audio Rotating Potentiometer Knob Cap for Ardui