{"product_id":"10-pcs-360-degrees-rotary-encoder-module-ky-040-hw-040-sensor-switch-6mm-half-shaft-potentiometer-rotary-knob-cap-15-17-15-13-5","title":"10 PCS 360 Degrees Rotary Encoder Module KY-040 HW-040 Sensor Switch 6MM Half Shaft Potentiometer Rotary Knob Cap 15×17 15×13.5","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ediymore\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDissipation Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eas the description\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperating Temperature\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eas the description\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupply Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e5V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSwitch\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv\u003e\u003cdiv\u003e\u003ch1\u003e\n\u003ckse:widget data-widget-type=\"customText\" id=\"1005000001294922\" type=\"custom\"\u003e\u003c\/kse:widget\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Hd407a8f9d06a40c6b6c5e963afd04617i.jpg?width=950\u0026amp;height=40\u0026amp;hash=990\" slate-data-type=\"image\"\u003e\u003cspan style=\"font-family:Arial, Helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:26px\"\u003e\u003cbr\u003eKY-040 HW-040 360 Degrees Rotary Encoder Module Sensor Switch with 6MM Half Shaft Potentiometer Rotary Knob Cap 15×17 15×13.5mm\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cspan style=\"font-family:Arial, Helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:22px\"\u003eProduct selling point:\u003cbr\u003e1. Using high-quality materials, the quality is guaranteed\u003cbr\u003e2. The appearance of the product is exquisite\u003cbr\u003e3. The product is easy to use\u003cbr\u003e4. The number of output pulses during the forward and reverse rotation can be counted by rotating. Unlike potentiometers, there is no limit to the rotation count.\u003cbr\u003e5. With the buttons on the rotary encoder, it can be reset to the initial state, that is, counting from 0\u003cbr\u003e\u003cbr\u003eProduct parameters:\u003cbr\u003eWorking voltage: 5V\u003cbr\u003eNumber of pulses per revolution: 20\u003cbr\u003eSpecifications: Threaded\/Unthreaded\u003cbr\u003eThe rotary encoder can count the number of output pulses in the process of forward and reverse rotation by rotating. Unlike the potentiometer, the rotation count is unlimited. With the buttons on the rotary encoder, it can be reset to the initial state. , that is, counting from 0\u003cbr\u003e\u003cbr\u003eworking principle:\u003cbr\u003eIncremental encoder is a rotary sensor that converts rotational 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 a radial indexing disc (code disc) consisting of alternating light-transmitting and opaque windows, while being illuminated vertically by an infrared light source that projects the image of the code disc onto the receiver surface . The receiver is covered with a diffraction grating, which has the same window width as the code wheel. The job of the receiver is to sense the changes produced by the rotation of the disc and then convert the optical changes into corresponding electrical changes. Then the low-level signal rises to a higher level and produces square pulses without any interference, which must be processed by electronic circuits. The reading system usually adopts a differential method, that is, two different signals with the same waveform but a phase difference of 180° are compared in order to improve the quality and stability of the output signal. The reading is based on the difference between the two signals, thereby eliminating interference.\u003cbr\u003e\u003cbr\u003eShipping list:\u003cbr\u003eModule X10\/Knob Cap X10\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align:left;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px\" align=\"left\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Hbb6d93db4b554e089e2f10dec63e1f3dy.jpg?width=950\u0026amp;height=40\u0026amp;hash=990\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9fab708da92a42d2a3be9e4fb5c3ce338.jpg?width=1000\u0026amp;height=1000\u0026amp;hash=2000\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9b5525d4e4f746c38749fba0ba5528e80.jpg?width=1000\u0026amp;height=1000\u0026amp;hash=2000\" slate-data-type=\"image\"\u003e\u003cimg 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