1. Introduction
The JY-ME01 is a high-precision 18-bit resolution absolute encoder designed for digital rotation, multi-turn angle, and speed measurement. This non-contact sensor offers low rotation damping and is housed in an aluminum casing to effectively reject signal interference. It supports both Modbus and Serial ASCII Code protocols, making it versatile for various industrial and automation applications.
Its compact design, light weight, and low power consumption make it suitable for a wide range of applications, including 3D printers, electronically controlled slide rail modules, automated assembly lines, transportation equipment, textile machinery, lifting machinery, pressure machinery, elevator automation, and industrial robots.


2. Key Features
- High Precision: 18-bit resolution for accurate rotation angle measurement.
- Multi-turn Capability: Designed for multi-turn applications.
- Digital Output: Provides digital rotation and angle speed measurement.
- Non-Contact Sensing: Ensures low rotation damping and extended lifespan.
- Robust Housing: Aluminum housing effectively shields against external magnetic field signal interference.
- Communication Protocols: Supports Modbus and Serial ASCII Code for flexible data integration.
- Compact Design: Small size and light weight for easy integration into various systems.
- Low Power Consumption: Efficient operation.
- Wide Measuring Range: Suitable for diverse measurement needs.
- Easy Installation: Designed for straightforward setup.


3. Specifications

| Parameter | Value |
|---|---|
| Model Number | JY-ME01 |
| Description | Absolute Encoder |
| Voltage - Supply | 3.3-5V |
| Range | 0-360° |
| Resolution | 18 BIT |
| Rotating Speed | 25000 RPM |
| Current - Supply | <25mA (Max 25mA) |
| Operating Temperature | -40℃ ~ +85℃ |
| Size / Dimension | 26mm (Height) * 15mm (Diameter) |
| Protocol | CAN, 485 |
| Baud Rate | 9600, 115200, 460800 (default 250K) |
| Anti-vibration | 10G |
| Impact Resistance | 50G |
| Material | High Carbon Steel (Shaft) |
| Origin | Mainland China, Guangdong |
4. Setup
4.1. Unboxing and Shipping List
Upon receiving your JY-ME01, please verify that all components are present:
- JY-ME01 Encoder
- Evaluation Board (if included in your package)
- Type-C USB Cable (if included in your package)

4.2. Connection Method
The JY-ME01 encoder uses a silicone soft cable with a special interface for easy connection. Refer to the pinout and MCU connection diagram below for proper wiring.

| NO | Name | Description |
|---|---|---|
| 1 | VCC | Power cord 3.3~5V |
| 2 | RX | RX serial port receiving line |
| 3 | TX | TX serial port transmitting line |
| 4 | NC | Reserve |
| 5 | NC | Reserve |
| 6 | GND | Ground wire |

4.3. Test Evaluation Board
The development evaluation board is designed to test the on-board CH330 driver chip. It connects to a computer via a Type-C port, offering plug-and-play functionality without additional wiring. It includes a data transceiver working indicator and leads to all interfaces of the module, simplifying development and testing.

4.4. Supporting Information
Additional resources such as PC software, a detailed manual, and STM32 development examples are available to assist with integration and development. Please refer to the provided supporting information for these resources.

5. Operation
5.1. Modbus Mode
The JY-ME01 supports Modbus mode, allowing external devices to read sensor data. When connected and configured correctly, the Modbus protocol enables reliable data acquisition for integration into control systems or data logging applications. The PC software provides an interface to visualize this data, often displaying it as an angle curve over time.

5.2. Serial ASCII Code Output
For applications requiring straightforward data interpretation, the JY-ME01 can output data in Serial ASCII Code. This format provides intuitive and clear data, making it easy to parse and use in various programming environments. The PC software can display the real-time angle value directly.

5.3. Product Video Overview
For a visual guide on the product and its features, please watch the official product video:
6. Maintenance
To ensure the longevity and optimal performance of your JY-ME01 encoder, follow these general maintenance guidelines:
- Keep Clean: Regularly clean the exterior of the encoder with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- Environmental Conditions: Operate and store the encoder within the specified operating temperature range (-40℃ to +85℃) and avoid environments with high humidity or corrosive gases.
- Handle with Care: Although robust, avoid dropping or subjecting the encoder to excessive physical shock.
- Connection Integrity: Periodically check the cable connections to ensure they are secure and free from damage.
- Signal Interference: The aluminum housing provides shielding, but ensure the installation environment minimizes strong electromagnetic interference sources that could affect performance.
7. Troubleshooting
This section addresses common issues and questions related to the JY-ME01 encoder.
- No Data Output:
- Verify that the encoder is correctly powered (3.3-5V).
- Check all cable connections for proper seating and continuity.
- Ensure the correct communication protocol (CAN or RS485) and baud rate are selected in your software or receiving device.
- If using the evaluation board, confirm the CH330 driver is installed and recognized by your computer.
- Inaccurate Readings:
- Ensure the encoder is securely mounted and not experiencing excessive vibration or movement beyond its operational limits.
- Check for strong magnetic fields or electrical noise in the vicinity that could interfere with the sensor's operation.
- Verify that the software configuration matches the encoder's settings.
- Compatibility with Mobile Devices:
- The JY-ME01 does not directly support connection to iPhones. For iPhone compatibility with WitMotion sensors, specific Bluetooth-enabled models like WT901BLECL, BWT901BCL, or BWT61CL are required.
- New to Attitude Sensors:
- The JY-ME01 is designed for direct use. No additional specialized tools are typically required for basic connection and operation beyond standard wiring and a computer for software interface.
8. User Tips
- Direct Use: For users new to attitude sensors, the JY-ME01 is designed for straightforward integration and does not typically require additional complex tools for initial setup.
- Protocol Selection: Remember to select the appropriate communication protocol (CAN or RS485) and baud rate in your application for successful data transmission.
- Software Visualization: Utilize the provided PC software to visualize real-time data and angle curves, which can greatly aid in monitoring and debugging your system.
9. Warranty & Support
9.1. Quality Assurance
All products sold are genuine and undergo quality assurance processes. We maintain high standards of excellence and strive for 100% customer satisfaction.
9.2. Service Guarantee
If you have any questions about the product or require support, please contact the seller. Inquiries are typically responded to within 12 hours.
9.3. Contact Information
For support and inquiries, you may use the following contact details:
- Email: hnbydzsw111@126.com
- WhatsApp: +86 19376855707
- WeChat: Hnhy19376855707






