1. Product Overview
The Huidu C16L is a new generation LED multimedia playback card designed for small and medium LED screens. It integrates the functionalities of a sending card, a receiving card, and a playback terminal into a single unit. This design simplifies the traditional asynchronous playback solution by reducing the need for a separate computer playback terminal, offering convenient control at any time.
The C16L features an onboard receiver for direct screen connection, providing a cost-effective solution. It supports a wide range of program content, including videos, pictures, GIF animations, texts, WPS documents, tables, clocks, and timings. It delivers a 60Hz frame rate output for smooth word movement and includes remote power supply control.
Standard features include 2.4GHz Wi-Fi for wireless control via the "LedArt" mobile application. It also supports access to the "XiaoHui Cloud" platform for remote cluster management over the Internet. Program updates can be performed via a USB interface. The C16L supports external environmental monitoring sensors for real-time data viewing. It is widely applicable in smart commercial displays and smart city applications such as light pole screens, door screens, and vehicle advertising displays.
2. Product Features
2.1. Input Capabilities
- Network Port: 1 channel 100M communication network port for debugging parameters, program sending, and Internet access.
- USB Interface: 1 channel USB communication interface for program updates and capacity expansion.
- Sensor Interfaces: Dedicated interfaces for temperature sensor and GPS sensor, plus 1 universal sensor input interface.
2.2. Output Capabilities
- Control Range: Maximum control range of 650,000 pixels. A single card can load 200,000 pixels, and cascading allows for up to 650,000 pixels.
- Maximum Dimensions: Maximum width of 8192 pixels (width >1920 triggers discount), maximum height of 1920 pixels.
- Gigabit Network Port: 1 channel Gigabit output network port for direct cascading to HD-R series receiving cards to control the display.
- HUB75E Interfaces: Onboard 12 sets of HUB75E interfaces.
- Audio Output: 1 channel TRS 3.5mm standard two-channel audio output.
2.3. Core Functions
- Wi-Fi Control: Standard 2.4GHz Wi-Fi supporting mobile APP wireless control (WiFi-AP and WiFi-STA modes).
- Remote Power Control: Onboard 1-channel relay for remote control of power supply.
- Video Playback: Supports 2-channel video window playback (up to 2 channels of 1080P).
- Cloud Platform Access: Supports 4G access to the XiaoHui Cloud platform for remote management over the Internet (optional).
- UART Communication: Supports UART communication.
- Serial Communication: Supports 1 channel RS-232 or RS-485 communication (optional).
3. Setup and Connection
3.1. Communication Methods
The C16L controller offers flexible communication options for various deployment scenarios:
- Stand-alone Control: For local management, the controller supports Wi-Fi, direct network port connection, and USB interface for program updates and communication.
- Cluster Control: For remote management of multiple displays, the controller supports Internet remote control via the XiaoHui Cloud platform (4G module optional).
3.2. Interface Description
Refer to the diagram and tables below for a detailed description of the C16L interfaces and indicator lights.
| Serial Number | Name | Description |
|---|---|---|
| 1 | Power input terminal | DC 5V (4.6V~5.5V) 3A |
| 2 | Output network port | Gigabit output network port, cascaded with HD-R series receiving cards |
| 3 | Input network port | 100M input network port communication, connect to computer to debug and publish programs, used to access LAN or Internet |
| 4 | Audio output | TRS 3.5mm standard two-channel audio output port |
| 5 | USB | Used to update programs or expand capacity |
| 6 | Wi-Fi antenna | Connect Wi-Fi antenna to enhance wireless signal |
| 7 | Temperature sensor dedicated interface | Connect a temperature sensor to monitor the surrounding environment temperature in real time |
| 8 | Sensor interface | External temperature, humidity, brightness, wind speed, wind direction, noise, PM2.5, PM10, CO2 and other sensors |
| 9 | GPS interface | Connect to GPS module for positioning and time adjustment |
| 10 | Relay | Relay on/off, supports maximum load: AC 250V~3A or DC 30V~3A. The connection method is as follows: |
| 11 | HUB75E interface | Connect HUB75 (B/D/E) interface module |
| 18 | SIM card holder | Used to install 4G data card and provide networking function (optional, supports optional eSIM card) |
4. Operating Instructions
4.1. Program Management
- Program Schedule: Supports sequential playback of multiple programs, timed playback, program insertion, and multi-screen synchronization.
- Program Partition: Supports any partition of the program window.
- Content Formats:
- Video: AVI, WMV, MPG, RM/RMVB, VOB, MP4, FLV, and other common video formats. Supports up to 2 channels of 1080p video playback simultaneously.
- Image: BMP, GIF, JPG, JPEG, PNG, PBM, PGM, PPM, and other common image formats.
- Audio: MPEG-1 Layer III, AAC, etc.
- Text: Single line text, static text, multi-line text, animated words, WPS, etc.
- Clock Display: RTC real-time clock display and management.
- U Disk: Plug and play functionality for content transfer.
4.2. Wireless Control (Wi-Fi)
The C16L comes with built-in 2.4GHz Wi-Fi. Use the "LedArt" mobile application to control the display wirelessly. The controller supports both Wi-Fi AP (Access Point) mode and Wi-Fi STA (Station) mode for flexible network integration.
4.3. Remote Management (XiaoHui Cloud)
For remote cluster management, the C16L can connect to the XiaoHui Cloud platform. This requires an optional 4G module and allows for Internet-based control and monitoring of multiple LED screens.
5. Troubleshooting and Indicator Lights
The C16L features several indicator lights to help diagnose operational status. Observe these lights for troubleshooting:
| Serial Number | Name | Description |
|---|---|---|
| 12 | System indicator light |
|
| 13-1 | Sensor indicator light |
|
| 13-2 | GPS indicator light |
|
| 14 | Display indicator light | If the green light flashes, the FPGA system is running normally; if the green light is on or off, the system is running abnormally. |
| 15 | Wi-Fi indicator light |
|
| 16 | PCIE-4G socket | 4G module socket (optional function, installed with 4G antenna by default) |
| 17 | 4G communication indicator light |
|
6. Specifications
6.1. General Parameters
| Category | Parameter | Value/Description |
|---|---|---|
| Electrical parameters | Input power | DC 5V (4.6V~5.5V) |
| Maximum power consumption | 8W | |
| Hardware performance | Hardware performance | 1.5GHz, Quad-core CPU, Mali-G31GPU Support 1080p@60fps hard decoding playback Support 1080p@30fps hardware encoding |
| Storage | 4GB (2G available) | |
| Storage environment | Temperature | -40℃ ~ 80℃ |
| Humidity | 0%RH ~ 80%RH (no condensation) | |
| Working environment | Temperature | -40℃ ~ 80℃ |
| Humidity | 0%RH ~ 80%RH (no condensation) | |
| Protection level | Protection level | The bare board is not waterproof; prevent water from dripping into the product, and do not get the product wet or rinsed. |
| System software | System software | Linux4.4 operating system software FPGA software |
6.2. Physical Dimensions and Weight
- Size: 174.9mm × 101.4mm
- Net weight: 0.14KG
6.3. Package Contents
- 1 x C16L Controller
- 1 x WiFi antenna
- 1 x Certificate
- Note: 4G antenna comes with 4G module optional (1PCS).
7. Maintenance
- Environmental Conditions: Ensure the controller operates within the specified working temperature (-40℃ ~ 80℃) and humidity (0%RH ~ 80%RH, non-condensing) ranges.
- Moisture Protection: The bare board is not waterproof. Prevent water from dripping into the product and avoid getting it wet or rinsed.
- Cleaning: Keep the device free from dust and debris to ensure proper ventilation and operation. Use a soft, dry cloth for cleaning.
- Firmware Updates: Regularly check for and apply firmware updates via the USB interface or XiaoHui Cloud platform to ensure optimal performance and access to new features.
8. User Tips
No specific user tips were found in the provided reviews or Q&A content. For best performance, ensure all connections are secure and refer to the indicator lights for quick status checks.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your vendor or the manufacturer directly. Ensure you have your product model (HD-C16L) and any relevant purchase details available when seeking support.
