Huidu HD-40M LCD Digital Signage Motherboard Overview
The Huidu HD-40M (1+8) is an Android motherboard for LCD digital signage. The 1+8 configuration provides 1GB RAM and 8GB eMMC storage. Its Allwinner A40i processor runs at up to 1.2GHz, with a Mali400 MP2 GPU and Android 7.1.1.
Use this page to check the board configuration, display connection and integration requirements before ordering. For a replacement project, match the LCD panel and wiring as well as the motherboard model.
Key Specifications
| Item | Specification |
|---|---|
| Processor and graphics | Allwinner A40i quad-core, up to 1.2GHz; Mali400 MP2 |
| Operating system | Android 7.1.1 |
| Memory and storage | 1GB RAM; 8GB eMMC |
| Network | 100M RJ45 Ethernet; Wi-Fi 802.11b/g/n |
| Image rotation | Manual 0°, 90°, 180° and 270° rotation |
| LCD interface | Single/dual LVDS; selectable 3.3V, 5V or 12V panel supply; 12V backlight control |
| USB and serial | USB 2.0 host, USB 2.0 OTG and USB expansion header; one UART and one DEBUG interface |
| Audio | 3.5mm output; dual 5W amplifier outputs for 8-ohm speakers |
| Board power | 12V DC; specification lists a 12V 1.5A adapter |
Applications and Integration
The compact board integrates networking, display control, USB and audio for advertising screens and compatible touch terminals. Supported USB touch technologies include infrared and capacitive touch. Check the exact touch controller and application with your system integrator.
For an existing installation, record the panel model, cable pinout, enclosure space, software version and power requirements. For a new display, confirm these items together before choosing accessories.
Check LCD Compatibility Before Ordering
- Panel connection: confirm the LVDS configuration, timing, cable orientation and panel supply voltage.
- Power: check the complete display’s power budget, including backlight and peripherals; do not treat the board adapter rating as the total system requirement.
- Serial devices: the UART uses TTL signalling. RS-232/RS-485 devices require appropriate interface conversion.
- Installation: disconnect power before wiring or changing the panel voltage setting.
Frequently Asked Questions
What does HD-40M 1+8 mean?
It identifies the 1GB RAM and 8GB storage configuration. Include this configuration when requesting a replacement board.
Can I use the HD-40M with any LCD panel?
Compatibility depends on the panel interface, timing, voltage and cable pinout. Share the panel datasheet before ordering; the model name alone is not a compatibility check.
Where can I find the wiring details?
Use the HD-40M specification below for connector definitions. Match the document to your supplied board revision before installation.
Product Images
HD-40M Specification Download
Download the Huidu HD-40M specification (PDF, V2.1)
Conclusion
The HD-40M is an option for LCD signage projects built around its Android 7.1.1 platform and 1GB+8GB configuration. Confirm your panel and software requirements before purchase. Contact us about HD-40M compatibility with your panel model, intended application and required quantity.
