HUIDU HD-M21B Specification
Here is the HUIDU HD-M21B Specification to help you know more about HD-M21B LCD Controller overview, tech parameters, features list, Connection methods, product size, interface parameter, etc.
- V3.0 20210611
System Overview
HUIDU HD-M21B is a well-built all-in-one LCD Android smart play box, using Rockchip RK3288 quad-core chip solution, equipped with Android 7.1.2 system, main frequency up to 1.8GHz, with super performance. Using Mali-T764 GPU，support AFBC(frame slower compression), 4K/H.265 hard decoding, 1080P video decoding, HDMI interface supports 4K output, 4K video play mode. Supports U-disk, TF card, Wi-Fi, network port and other interfaces, making the product more versatile, and is widely used in intelligent control fields such as advertising machines, interactive all-in-one machines, security, medical care, transportation, finance, industrial control, etc. Due to its hardware platform and Android intelligent features, it can be used on the smart terminal motherboard when human-computer interaction or network device interaction is required, which can be your best choice.
Features
- High performance. RK3288 chip adopts quad-core ARM Cortex-A17 architecture, the main frequency can be as high as 1.8GHz, compared with common single-core, dual-core, and quad-core solutions on the market. A qualitative leap in performance, capable of playing various formats of high-definition video screens, and capable of handling complex interactive operations
- High stability. The RK3288 Android integrated board adds its own unique technology to the hardware and software to ensure the stability of the product so that the final product can be unattended for 7*24 hours.
- High integration. integrates functions such as Ethernet, Wi-Fi, power amplifier, TF expansion card, USB expansion port, HDMI, etc., which greatly simplifies the installation of the whole machine.
- High definition. Supports LCD display screens with HDMI interface, and supports cropping screens of various sizes and resolutions.
Basic Parameters
1. Hardware Parameters
| Hardware Parameters | |
| CPU | RK3288, Quad-core, the highest frequency 1.8GHz， Android 7.1.2 |
| GPU | Mail-T764 GPU MP4 Quad-core GPU Supports OpenGL ES1.1/2.0,OpenVG1.1,OpenCL |
| RAM | DDR3, 2GB |
Built-in storage capacity | eMMC 8GB (16/32/64 GB) TF Card expansion (can be used to expand SSD) |
| Connection | Support RJ45 100M Ethernet port and Ethernet. Support 2.4G Wi-Fi and Wi-Fi 802.11b / g / n protocol. |
| Image rotation | Support 0 degrees, 90 degrees, 180 degrees, 270-degree manual rotation |
| Display interface | 1 HDMI 1.4 support 4K output |
| Audio | Support standard left and right channel line output |
| RTC | Built-in real-time clock function |
| USB | 1USB-2.0 HOST, 1 USB2.0 or OTG |
| LED | 1 * power status LED (green), 1 * system LED (green, blinking by default) |
| Button | 1 * Recovery button |
| Power Adapter | Input: AC100-240V.50-60Hz, output: DC12V 1.5A (Requires that the surge voltage is less than 18V and the ripple voltage is less than 100mV) |
2. Software Parameters
Software Parameters | |
Operating system | Android 7.1.2 |
Audio | MP3,WMA,WAV, APE, FLAC, AAC, OGG,M4A,3GPP, etc. |
video | Support H.264, VP8, MAV, WMV, AVS, H.263, MPEG4, and other video formats 1080P multi-video decoding |
image | Support various picture formats such as JPG, BMP, PNG |
System comes with application software | APK installer, email, calculator, browser, recorder, calendar, settings, clock, video player, search, contacts, gallery, download, camera, music, explorer, etc. |
Language | support multi-language |
Typewriting | Standard Android keyboard, optional third-party input method |
System Management | The original ecological Android system, open root permissions, can be customized product development |
Real-time remote monitoring, self-recovery of a system crash, 7 * 24 hours unattended | |
Support OTA remote upgrade; support U-disk upgrade | |
Support boot animation definition | |
Support server / standalone mode switch | |
Support Wi-Fi hotspot | |
System watchdog | Support software watchdog |
Product Size Specifications
Product Interface Diagram
Interface parameter description
1. PWR / DC (power input) Interface
2. HDMI Output
3.LAN port
4. Audio interface and reset control
- Standard 3.5mm dual-channel audio interface, which can be directly connected to low-
- The reset hole is hidden in the audio port. Long press with a long reset needle to restore the factory settings.
2.OTG interface
Used to upgrade firmware and other functions, the box can be customized as a USB interface through jumpers before assembly.
Insert the U disk to update the program of the display screen, one of the USB interfaces can be switched to OTG or USB interface through jumpers (OTG and USB need to be set before the factory).
4.LAN port
5. TF card slot
6. SIM card slot (Optional)
7. OTG Port
Upgrade firmware and other functions, the box can be customized as a USB interface through jumpers before assembly
8. USB Port
9. 4G Antenna Port（Optional）
10. Wi-Fi Antenna Port
11. IR Receiver Port
12. Infrared remote control receiver
Communication Methods
1: Update Programs by Wi-Fi
Mobile APP-“LedArt” download here.
2: Update Program with U-disk
3: Update Program by TF Card
4: Update Programs with LAN
5: Update Programs by the Internet
Note:
- The 4G module is an optional accessory, installed in the playback box before leaving the factory;
- Non-standard features, the picture of the specification may be slightly different from the actual product, if you have any questions, please contact Huidu Technology for confirmation;
Statement
This HUIDU HD-M21B Specification is just for reference only, if you have any problems during using this LCD Screen Controller or have any questions about this datasheet, please contact the HUIDU tech department.