Shaft Rotary Encoder Sensor
The HW-040 is a highly versatile, compact shaft rotary encoder module mounted on a convenient breakout board, making it perfect for DIY electronics, prototyping, and microcontroller projects. Unlike standard potentiometers, this rotary encoder provides continuous 360-degree rotation tracking via quadrature outputs, allowing you to accurately measure relative changes in position, speed, and direction. It features three integrated 10kΩ pull-up resistors on the back of the PCB and an integrated push-button shaft switch for enhanced control functionality.
Features
- Continuous Rotation
- Integrated Push-Button Switch
- Onboard Pull-up Resistors
- Project & Breadboard Friendly
- Dual Mounting Holes
Specifications
| Model | HW-040 |
|---|---|
| Module Dimensions (PCB) | 26 mm × 18.5 mm |
| PCB Thickness | 1.3 mm |
| Total Module Height | 21 mm (from base of PCB to the top of the shaft) |
| Shaft Length | 9.5 mm |
| Shaft Diameter | 4.4 mm to 5.7 mm (D-Shape flat section) |
| Onboard Resistors | 3× 10kΩ surface-mount resistors |
All dimensions are in mm
Pinout Configuration
- CLK: Clock output (Primary encoder pulse for step counting)
- DT: Data output (Secondary encoder pulse offset by 90° to determine direction)
- SW: Switch output (Push-button action, normally open)
- +: Positive power supply connection (VCC)
- GND: Ground connection
Applications
- Digital volume control and audio equipment tuning knobs.
- Menu navigation interfaces for OLED, LCD, and TFT screens in microcontroller projects.
- Industrial control panels requiring infinite rotational adjustments.
- Robotics, stepping feedback, and motor position fine-tuning systems.
