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CONTENTS

Unit Encoder

SKU:U135

Description

Unit Encoder is a rotary encoder expansion unit with I2C interface, integrated with 30-bit pulse encoding knob (with button function) + 2 x SK6812 programmable RGB LEDs. The built-in STM32F030 flashed with the encoder pulse acquisition firmware, allowing users to obtain the encoded value directly via I2C. Suitable for scale value control/volume adjustment and other control scenarios.

Product Features

  • 30-bit pulse encoding knob (30 pulses per rotation)
  • 2x SK6812 programmable RGB LEDs
  • 1x Button input

Include

  • 1x Unit Encoder
  • 1x HY2.0-4P cable (20cm)

Application

  • Human Machine Interaction (HMI)
  • Volume knob

Specification

Specifications Parameters
Pulse encoder knob 30-bit pulse encoder knob (with key input)
Programmable RGB LED 2x SK6812
Working current Encoder working (DC-5V@17mA)
Net weight 7.4g
Gross weight 12.3g
Product size 32 * 24 * 22mm
Packing size 93 * 138mm

PinMap

  • Unit Encoder
M5Core(PORT A) GPIO22 GPIO21 5V GND
Unit Encoder SCL SDA 5V GND

Schematic

Protocol

  • Protocol type I2C
  • I2C Address: 0x40

ENCODER_REG 0x10

REG len description values R/W
0x10 2 Read encoder value [0] VALUE_L
[1] VALUE_H		 R

BUTTON_REG 0x20

REG len description values R/W
0x20 2 Read Button status [0] BTN STATUS R

RGB_LED_REG 0x30

REG len description values R/W
0x30 4 Control RGB LED Color [0]LED Index（1/2）
[1] RED
[2] GREEN
[2] BLUE		 W
Notice:
UnitEncoder firmware(stm32) must be rewritten to use the following features. UnitEncoder firmware

MODE_REG 0x00

REG len description values R/W
0x00 1 Change Mode [0] PULSE
[1] AB		 W

ENCODER_REG 0x10

REG len description values R/W
0x10 2 Read encoder value [0] VALUE_L
[1] VALUE_H		 R/W

MODE_REG 0x40

REG len description values R/W
0x40 1 Reset Counter [1>=]Reset W

Example

Arduino

UIFlow

UIFlow1.0 UIFlow1.0 Unit encoder Docs
UIFlow1.0 Unit encoder Docs
How to use Unit encoder and related API instructions in the UIFlow1.0
UIFlow2.0 UIFlow2.0 Unit encoder Docs
UIFlow2.0 Unit encoder Docs
How to use Unit encoder and related API instructions in the UIFlow2.0

Video

  • Read Encoder Value