HD-C16C LED Control CardAsynchronous Cascade Card — 122,880 Pixels, 10 Onboard HUB75E, Wi-Fi APP & Remote Power Relay
Huidu HD-C16C asynchronous LED control card for small full-color screens: sender and receiver functions on one board, 10 onboard HUB75E outputs, 4GB storage with U-disk expansion, and phone APP control over Wi-Fi — supplied by Excelled, a trusted LED screen manufacturer for global B2B buyers.
What Is the Huidu HD-C16C LED Control Card?
The HD-C16C LED control card is an asynchronous cascade card that combines a sending card and a receiving card on one PCB. It can drive a small LED screen by itself through its 10 onboard HUB75E connectors — no separate receiving card needed — or expand to a larger screen by cascading HD-R series receiving cards from its gigabit output.
Content updates run over network cable, Wi-Fi (phone APP “Screen Master”), or U-disk. The card also carries a relay output for remote power control — schedule the screen’s power supply to switch on and off automatically.
• Control range: 122,880 pixels (384×320); widest 8192 px, highest 512 px.
• Storage: 4GB onboard flash, expandable via U-disk.
• Onboard display output: 10× HUB75E connectors — works as a receiving card.
• Output: 1× 1Gbps RJ45 (to receiving cards) + dual-track stereo audio.
• Inputs: 1× 100Mbps RJ45, USB 2.0, test button, sensor port, GPS port.
• Remote power: 1× relay control interface.
• Power: 8W at 5V DC (4.2–5.5V). Operating temperature: -40°C to +80°C.
Pixel Capacity
122,880 pixels (384×320) – widest 8192 px, highest 512 px
Onboard HUB75E
Ten 2×8-pin HUB75E headers let one card drive a small screen directly
Flash Storage
Onboard program memory with U-disk expansion for larger libraries
Low-Power Design
Runs on 5V DC with a relay interface for scheduled remote power control
HD-C16C LED Control Card Specifications
All values below are taken from the official Huidu HD-C16C specification (V0.1). Download the full datasheet PDF for the complete interface table and dimension chart.
| Parameter | Specification |
|---|---|
| Product Type | Full-color asynchronous cascade card (sending + receiving card in one) |
| Control Range | 122,880 pixels (384×320); widest 8192 px, highest 512 px |
| Supported Modules | Indoor/outdoor full-color and single/dual-color modules; virtual modules; standard and mainstream PWM driver ICs |
| Scan Modes | Static to 1/64 scan |
| Gray Scale | 256–65536 levels (adjustable) |
| Storage | 4GB onboard flash + U-disk expansion |
| Video Decoding | HD video hardware decoding, 60Hz frame-rate output |
| Video Formats | AVI, WMV, RMVB, MP4, 3GP, ASF, MPG, FLV, F4V, MKV, MOV, DAT, VOB, TRP, TS, WEBM |
| Image Formats | BMP, GIF, JPG, JPEG, PNG, PBM, PGM, PPM, XPM, XBM |
| Documents | DOC, DOCX, XLSX, XLS, PPT, PPTX; text with picture insertion |
| Play Functions | Video, pictures, GIF, text, clocks, timing; remote control, temperature, humidity, brightness extensions |
| Audio Output | Dual-track stereo output (3.5mm) |
| Onboard Interfaces | 10× HUB75E (2×8 pin), 1× relay control, temperature sensor port, GPS serial port, sensor port |
| Input Ports | 1× 100Mbps RJ45, 1× USB 2.0, 1× test button, 1× sensor port, 1× GPS port |
| Output Ports | 1× 1Gbps RJ45, dual-track AUDIO |
| Communication | Network port, U-disk, Wi-Fi (standard), 4G (optional) |
| Indicators | PWR (power), RUN (system), display signal, 4G status |
| Power | 8W; rated voltage 5V DC (4.2–5.5V) |
| Operating Temp | -40°C to +80°C; storage -40°C to +105°C |
| Net Weight | 0.12 kg |
| Certifications | CE, FCC, RoHS |
Evidence note: figures cross-checked against the official HD-C16C specification V0.1 (Shenzhen Huidu Technology Co., Ltd.). Keep the on-board battery seated to preserve time storage; use a standard 5V supply for long-term stability.
Why the HD-C16C Works as a Sending and Receiving Card in One
One Card, No Separate Receiver
Ten onboard HUB75E connectors mean a small screen — up to 122,880 pixels — needs nothing between the card and the modules. For integrators, that is one fewer component, one fewer power supply, and one fewer wiring failure point per sign.
Cascade to Larger Screens
The single gigabit output port cascades HD-R series receiving cards, so the same card also serves bigger walls within its 122,880-pixel budget. You are not locked into small formats.
Remote Power Over the Relay
The onboard relay interface switches the screen’s power supply on a schedule from the control software — energy savings for retail signs that only need to run during business hours.
HD-C16C Pixel Capacity Calculator: Will Your Sign Fit?
The 122,880-pixel budget is the most common sizing mistake on this card. Run the numbers before quoting.
Example 2 — Does not fit: a wall of 1024×256 pixels = 262,144 px — over the pixel budget. Result: move up to the HD-A5 player or split the wall across multiple cards.
General rule: pixel total ≤ 122,880, height ≤ 512 px, width ≤ 8192 px. Send us your module count and pixel pitch for a free load check with your cabinet files.
When Should You NOT Choose the HD-C16C?
• Your screen exceeds 122,880 pixels or needs more than 512 px height — use the HD-C36C (524,288 px) or the HD-A5 player box.
• You need live HDMI input — the C16C is asynchronous only; choose the HD-A5 or HD-A6L.
• You run single/dual-color text signs — the Huidu W-series sign cards cost less.
• You need multi-window splicing — that is the HD-A6L multimedia player territory.
Matching the card to the job avoids returns and rework — the C16C wins in small-screen projects where its 10 onboard HUB75E connectors matter most.
Huidu Card Selection Tree
How to Wire the HD-C16C Control Card
Three connections put a small screen on air; the rest is program management.
- Power: 5V DC into either the screw terminal or the fool-proof power connector (they are electrically identical).
- Modules: Ribbon cables from the 10 HUB75E headers to the LED modules — watch the keyed orientation on each cable.
- Network: Input RJ45 to the PC for debugging and publishing; output RJ45 to the first HD-R receiving card when cascading a larger screen.
- Options: Wi-Fi antenna for APP control, 4G module (not standard), relay to the power supply, temperature/humidity/brightness sensors.
HD-C16C Setup with HDPlayer — Step by Step
The C16C is configured with HDPlayer on PC, then updated day-to-day from the phone APP (“Screen Master”) or the Huidu cloud platform.
- Step 1 — Install HDPlayer and connect the PC to the input network port.
- Step 2 — Auto-detect: the card is recognized automatically — no complicated network setup, plug and play.
- Step 3 — Configure the screen: module type, scan mode (static to 1/64), resolution up to 122,880 px.
- Step 4 — Edit the program: video, pictures, GIF, Office documents, clocks and timing pages.
- Step 5 — Publish: over network, Wi-Fi, or U-disk.
- Step 6 — Test: press the test button for aging test lines on the display.
- Step 7 — Schedule power: configure the relay for timed power on/off.
- Step 8 — Backup: save the configuration for field replacement.
Video: third-party HDPlayer software tutorial for the Huidu C16C control card.
HD-C16C Common Issues & Diagnostic Procedures
Straight answers from our support engineers’ most frequent HD-C16C LED control card tickets.
Q1 How many pixels can the HD-C16C control?
122,880 pixels (384×320) with a maximum width of 8192 pixels and maximum height of 512 pixels, through its onboard HUB75E connectors or cascaded receiving cards.
Q2 Can the HD-C16C work without a receiving card?
Yes. The ten onboard HUB75E interfaces act as a receiving card, so one card drives a small screen directly. Add HD-R series receiving cards only when the screen is larger.
Q3 How do I update content without internet?
Copy the program to a USB flash drive and insert it into the USB 2.0 port, or connect over the network cable or Wi-Fi for one-to-one updates.
Q4 What software controls the HD-C16C?
HDPlayer on PC for configuration and program editing, the Screen Master phone APP for wireless updates, and the Huidu cloud platform for Internet cluster management.
Q5 What is the relay interface for?
The relay output controls the screen’s power supply remotely – typically used to schedule the screen on during business hours and off overnight.
Q6 Why does my card lose the clock time after power-off?
The on-board battery keeps time storage. If time resets, the battery is loose or drained – reseat or replace it.
Huidu Card Comparison: HD-C16C vs HD-C36C vs HD-A5
Huidu offers three steps up the small-screen ladder. Data below comes from each model’s official specification.
| Parameter | HD-C16C | HD-C36C | HD-A5 |
|---|---|---|---|
| Product Type | Async cascade card | Async cascade card | Dual-mode player box (async + sync) |
| Control Range | 122,880 px (384×320) | 524,288 px (1024×512) | 1.3M px (1280×1024) |
| Max Width / Height | 8192 px / 512 px | 8192 px / 1024 px | 16384 px / 2048 px |
| Onboard HUB75E | 10× | 10× | — (player box) |
| HDMI Sync Input | — | — | ✓ + auto-scaling |
| Storage | 4GB + U-disk | 4GB + U-disk | 8GB + U-disk |
| Remote Power Relay | ✓ | ✓ | — |
| Power | 8W (5V DC) | 8W (5V DC) | 18W (12V DC) |
| Small signs on one card, no receiver | Medium walls up to 1024×512 | HDMI live feed + bigger pixel budget |
HD-C16C Alternatives: Huidu vs NovaStar
| Product | Brand / Type | Best For |
|---|---|---|
| HD-C16C LED control card | Huidu — async cascade card | Small full-color screens, 10 onboard HUB75E, no receiver needed |
| HD-C36C | Huidu — async cascade card | Up to 524,288 pixels with the same card format |
| Taurus TB1 | NovaStar — async multimedia player | 650K px asynchronous projects in the NovaStar ecosystem |
| Huidu W-series | Huidu — single/dual-color sign cards | Text signs where full color is not required |
Excel LED Configuration Support for the HD-C16C
Excelled supplies the HD-C16C pre-configured with your module and cabinet files — scan mode, resolution, and program settings are bench-tested before shipping. Send us your module model and pixel pitch, and our engineers return a configuration file plus a load calculation. We also stock matching LED control systems, power supplies, and HD-R series receiving cards, so one order covers the whole sign.
Huidu HD-C16C LED Control Card is available now from Excelled — your trusted partner for LED control systems and complete display solutions. Every card ships pre-configured, bench-tested, and backed by our global warranty and engineering support team.
Explore more: LED Display Products • Huidu HD-A5 LED Display Player • Huidu HD-A6L LED Display Player • Huidu HD-A3 LED Controller • LEGIDATECH Official Website