Absolute rotary Encoder measure actual position by generating unique digital codes or bits (instead of pulses) that represent the encoder`s actual position. Single turn absolute encoders output codes that are repeated every full revolution and do not output data to indicate how many revolutions have been made. Multi-turn absolute encoders output a unique code for each shaft position through every rotation, up to 4096 revolutions. Unlike incremental encoders, absolute encoders will retain correct position even if power fails without homing at startup.
Absolute Encoder,Through Hollow Encoder,Absolute Encoder 13 Bit,14 Bit Optical Rotary Encoder Jilin Lander Intelligent Technology Co., Ltd , https://www.jllandertech.com
[Installation process]
1 Download the sofa butler installation file → 2 Set the folder in the U disk according to the system version → 3 Place the sofa housekeeper installation file in the specified folder → 4 Complete the installation
ã€Steps】
1. Baidu searches for "Sofa Manager" and clicks on the top ranked search results to enter the sofa (). 
1 need to create a "JmGoApks" folder (1.3.7 version of JmGoApks) in the U disk, will need to install the apk into it!
2. Enter the system settings main interface first
3. Insert the USB flash drive again.
4. Press the back key to exit the media center
5. Enter the device,
6. Press the return key once, etc., no reflection is pressed again
Version 1.3.9 is the easiest way to install software
1. First enter the system settings main interface
2. Then insert the U disk to
3 need to create a "SysTestFiles" folder in the U disk, the need to install the apk into it!
Version 1.4.0 Installation Method:
Option One:
Nut V8 box version 1.4.0 Upgrade Package Download (Recommended)
Option II:
1. First enter the system settings main interface
2. Then insert the U disk to
3. Prompt whether to enter the "Media Center" Select "Cancel"
4. One-click installation
5 need to create a "SysTestFiles" folder in the U disk, will need to install the apk into it!
General method: Nut V8 box version is upgraded to version 1.4.1 and then install the sofa butler via U disk:
1. Nut V8 1.4.1 version upgrade package download
2. U disk download sofa butler APK, insert the box
3. Out of the sofa butler installation icon, click download and install to install the Android market, you can online install the Android market inside the program, where the program is selected directly after the left side of the download and then install it. Do not need to use SD card so much trouble. 
If the installation fails, restart the device and try again by following the steps (may be useful). Still in doubt, please add the sofa butler official QQ group
Nut V8 installs the sofa butler tutorial through U disk, this tutorial is suitable for similar models such as nuts V8. You can also directly download the sofa butler apk installation package by clicking on the right link: http://app.shafa.com/shafa.apk. Download a good apk installation package, please copy to U disk. 1.3.7 Installing Software Methods If you still can not read the U disk, it is recommended to format the U disk to FAT32 format first (if there are other contents in the U disk, export and then format), or try another U disk.
Click "Download now" at the most prominent place on the homepage to download the latest version of the sofa butler apk installation package (360 browser pop-up download box please select "download to computer only"). You can also check out other brand TV box tutorials at the Home Tutorials portal.
After the equipment is installed, any TV version application can be downloaded through the sofa butler, which is very convenient.