LCD Smart Motherboard HD-M21 V3.0
Features：
● High performance. The RK3288 chip uses a quad-core ARM Cortex-A17 architecture, the main frequency can be as high as 1.8GHz, compared with the single-core, dual-core, and quad-core solutions common in the market. It has a qualitative leap in performance, can play high-definition video in various formats, and can handle complex interactive operations.
● High stability. RK3288 Android integrated board, in hardware and software, add your own unique technology to ensure the stability of the product, can make the final product 7 * 24 hours unattended.
● High integration. RK3288 Android integrated board integrates Ethernet, EDP, Wi-Fi, power amplifier, TF expansion card, USB expansion port, IR remote control function, HDMI, LVDS, backlight control, microphone, and other functions, greatly simplifying the overall design.
● High scalability. SIX expansion USB ports (4 ports are PIN type, 2 ports are standard type), 2 serial ports + 1 expandable debug serial port, and five IO expansion ports can expand the more peripheral device.
● High definition. Supporting various LVDS / EDP / HDMI interfaces and cropping screens of various sizes and resolutions.
● Perfectly support multiple mainstream touchscreen functions such as multi-point infrared touch, multi-point capacitive touch, multi-point nanofilm touch, multi-point acoustic wave touch, multi-point optical touch, etc.
Product Diagram：
Size：
| Hardware specifications | |
| CPU | RK3288, Quad-core, the highest frequency 1.8GHz |
| GPU | Mail-T764 GPU MP4 Quad-core GPU
Supports OpenGL ES1.1/2.0,OpenVG1.1,OpenCL |
| Memory | DDR3, 2GB by default |
| Built-in storage capacity | eMMC 16GB, supports 32 / 64GB
TF Card expansion (can be used to expand SSD) |
| Network | Support RJ45 R / A 100M Ethernet, support Ethernet.
Supports 2.4G / 5G Wi-Fi and Wi-Fi 802.11b / g / n protocols. Support Bluetooth 4.2, sending programs by Bluetooth |
| Image rotation | Support manual rotation of 0 degrees, 90 degrees, 180 degrees, and 270 degrees |
| Display interface | 1 * LVDS interface (single / dual, 6-bit / 8-bit), support 3.3V / 5V / 12V power supply
1 EDP interface, 1 HDMI1.4 interface, support 4K output Support dual screen simultaneous display function can directly drive interface LCD screen with multiple resolutions The onboard backlight control supports a 12V backlight power supply |
| Audio | Support standard left and right channel line output |
| Power amplifier | 2 outputs (8 ohms, 5 watts dual audio amplifier output) |
| Microphone | Differential MIC input |
| Touch screen | Support USB multi-point infrared touch, multi-point capacitive touch, multi-point nanofilm touch, multi-point acoustic wave
Touch, multi-point optical touch, and more. |
| RTC | Built-in real-time clock function |
| USB | 1 USB-2.0 HOST, 1 USB-2.0 OTG, 4 extended USB ports (one of USB shared with 4G module) |
| Infrared | Infrared receiver, supports infrared remote control function |
| LED | 1 * Power status LED (green), 1 * System LED (green, blinking by default) |
| Button | 1 * upgrade key |
| Serial port | 2 UART port, 1 DEBUG port |
| IO port | 5 IO input and output control, can be used as key scanning control |
| Power Adapter | Input: AC100-240V.50-60HZ, Output: DC12V 1.5A
(Requires surge voltage less than 18V and ripple voltage less than 100mV) |
| Software Specifications | |
| operating system | Android 7.1.2 (Optional Android 10.0) |
| Audio | MP3, WMA, WAV, APE, FLAC, AAC, OGG, M4A, 3GPP, and other formats |
| Video | Support H.264, VP8, MAV, WMV, AVS, H.263, MPEG4 and other video formats
1080P multi-video decoding |
| Image | Support various image formats such as JPG, BMP, PNG |
| The 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 |
| Input | Standard Android keyboard with the optional third-party input method |
| System Management | Original ecological Android system, open root permissions, and can customize product development |
| Real-time remote monitoring, system crash self-recovery, unattended 7 * 24 hours | |
| Support OTA remote upgrade; support U disk upgrade | |
| Support boot animation definition | |
| Support server / stand-alone mode switching | |
| Support Wi-Fi hotspot | |
| System watchdog | Support software watchdog |
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