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<ul><li>Scroll unit is a rotary encoder expansion unit in the form of a scroll wheel. It integrates a 12-pulse through-shaft encoder + button input + WS2812C programmable RGB LED. 
The built-in STM32F030 microcontroller integrates encoder pulse signal acquisition firmware, allowing users to directly obtain encoder values through I2C reading operations, simplifying complex processes. 
It is suitable for control scenarios such as scale value control and volume adjustment. 
Colour:White &amp; Red 
Material:plastic 
Specifications: 
1.Based on STM32 microcontroller 
2.AB phase output (12 pulses per revolution) 
3.Built-in button 
4.Multi-color WS2812C RGB LED indicator 
5.I2C communication interface 
Applications: 
1.Industrial Automation 
2.Smart Home 
3.Robotics 
4.Human-Computer Interaction 
Due to different batches, there may be differences in product appearance and printed text, which not affect use 
Package Contents: 
1 x Scroll Unit 
1 x HY2.0-4P Grove cable(Cable color random, don't accept the specified color) 
Only the above package content, other products are not included. 
Note: Light reflection 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 +/- 1-3cm.</li></ul>

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Scroll Unit Rotary Encoder Expansion Unit with Hollow Shaft Encoder(EC10E1220501)

Scroll unit is a rotary encoder expansion unit in the form of a scroll wheel. It integrates a 12-pulse through-shaft encoder + button input + WS2812C programmable RGB LED. 
The built-in STM32F030 microcontroller integrates encoder pulse signal acquisition firmware, allowing users to directly obtain encoder values through I2C reading operations, simplifying complex processes. 
It is suitable for control scenarios such as scale value control and volume adjustment. 
Colour:White &amp; Red 
Material:plastic 
Specifications: 
1.Based on STM32 microcontroller 
2.AB phase output (12 pulses per revolution) 
3.Built-in button 
4.Multi-color WS2812C RGB LED indicator 
5.I2C communication interface 
Applications: 
1.Industrial Automation 
2.Smart Home 
3.Robotics 
4.Human-Computer Interaction 
Due to different batches, there may be differences in product appearance and printed text, which not affect use 
Package Contents: 
1 x Scroll Unit 
1 x HY2.0-4P Grove cable(Cable color random, don't accept the specified color) 
Only the above package content, other products are not included. 
Note: Light reflection 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 +/- 1-3cm.