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EK8800
ELSKY
Android motherboard with 2*TTL ,2*RS232 ,LVDS,EDP,HDMI for display
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Power supply interface:
The DC interface specification of the motherboard is 5.5 * 2.5；and it is powered on by default；
The motherboard supports 12V power supply, with a full load power consumption of approximately 15W. It is recommended to use a 12V3A or higher power supply；
Display interface:
1、The motherboard HDMI, EDP, LVDS support single display, dual display replication；
2、The motherboard has a choice between LVDS and EDP signals, with LVDS being the default.To update firmware with EDP, there is no need to modify hardware；EDP uses EDP-C 30Pin backlight integrated screen cable；LVDS and EDP only support 2K；
3、The motherboard HDMI 2.0 interface supports resolution 3840*2160@60Hz；
4、The motherboard supports one Mipi Camera (30pin FPC) interface and can support up to 13 million pixels Mipi Camera；
Mini_PCIE interface：
The default USB signal for the Mini-PCIE interface on the motherboard supports 4G modules (4G full network), Huawei and Mobile 4G modules, but does not support WiFi modules；
USB interface：
The motherboard supports 6 * USB 2.0 by default；
The motherboard USB-OTG pin jump cap defaults to 1-2 pins, defaults to USB1 as Host mode (master device), jumps to 2-3 pins USB1 as Device mode (slave device)；
（Note: HOST mode can be used to connect to regular USB devices; Device mode can connect to a computer ADB for debugging programs and transferring files.）
COM interface：
The motherboard supports 2 TTL 、2COM by default ；
COM1/COM2 supports TTL by default；COM3/COM4 supports RS232 by default and does not support RS485；
Network card：
The motherboard supports a single RJ45 interface Realtek 8211F Gigabit Ethernet card, but does not support PXE and Wake on LAN functionality；
The RTL8821CS Bluetooth/WiFi two in one module on the motherboard supports 2.4GHz/5GHz dual band WIFI and Bluetooth 4.2；
Sound card：
The motherboard integrates the ES8336 audio controller, supports one channel three/four segment headphones, left and right channel output, and has a built-in 8 Ω/5W amplifier；
Model | EK8800 | Size | 146mm*100mm*12mm | |
CPU | Rockchip RK3288, Cortex-A17 quad-core，main frequency 1.8GHz | |||
Running memory | 2G/4G optional | |||
Built-in storage | 8G/16G/32G/64G optional | |||
power supply | 1*DC_IN | Support 12V voltage, DC head inner diameter is 2.5MM The full load power consumption of the motherboard is about 15W and it is recommended to use a 12V/3A or above power supply | ||
1*PWR1 interface | ||||
Display function | The motherboard HDMI/EDP/LVDS supports single display and dual display replication | |||
1*HDMI 2.0 interface | Support resolution 3840*2160@60Hz | |||
1*EDP pin | EPD-C screen cable，support resolution 1920*1080@60Hz （30Pin，2*15Pin，2.0mm） | |||
1*LVDS_PWR2 | EDP1 working voltage control pin （6Pin，1*6Pin，2.0mm） | |||
1*LVDS pin | Support resolution 1920*1080@60Hz （40Pin，2*20Pin，2.0mm） | |||
1*INVERT pin | LVDS backlight switch control pin （6Pin，1*6Pin，2.0mm） | |||
1*LVDS_PWR1 pin | LVDS working voltage control pin （6Pin，2*3Pin，2.0mm） | |||
Network function | 1*RJ45 LAN interface | Integrated Realtek 8211E Gigabit Ethernet Card Chip | ||
1*4G/WIFI interface | Only supports 4G modules，can support Huawei, Quectel 4G modules | |||
1*WiFi_ANT1 interface | Connected to WiFi antenna, built-in RTL8821CS WiFi Bluetooth two in one module | |||
Sound function | Integrated ES8336 two-in-one audio controller | |||
1*LIN_OUT interface | 3.5mm standard interface, supports one way three/four segment headphone insertion (black) | |||
1*MIC pin | Supports microphone input （2Pin，1*2Pin，2.0mm） | |||
1*INT_SPK pin | Amplifier pin, supports dual channel output of 8 ohms and 5 watts speakers （4Pin，1*4Pin，2.0mm） | |||
USB function | 2*USB2.0 interface | Rear standard USB2.0 interface | ||
2*USB pin | USB2.0 pins，one set has 1*USB2.0 （4Pin，1*4Pin，2.0mm） | |||
1*J5 USB pin | USB2.0 pins, one set has 2*USB2.0 （10Pin，2*5Pin，2.0mm） | |||
Switch function | SW1 button | Reset button | ||
SW2 button | Power switch button | |||
SW3 button | Enter MASKROM forced burning mode | |||
RECOVER1 button | Enter RECORD1 mode or USB LOADER upgrade mode | |||
Other I/O | 1*COM1/2 pin | Supports TTL （4Pin，1*4Pin，2.0mm） | ||
1*COM3/4 pin | Serial port supports RS232 （4Pin，1*4Pin，2.0mm） | |||
2*GPIO pin | Standard GPIO pins （6Pin，1*6Pin，2.0mm） | |||
1*TP1 pin | Supports touch screen devices （6Pin，1*6Pin，2.0mm） | |||
1*USB_OTG pin | Jump to pins 1-2, USB1 supports Host mode, jump to pins 2-3, USB1 is in Device mode （3Pin，1*3Pin，2.0mm） | |||
Note: HOST mode can be used to connect to regular USB devices; Device mode can connect to a computer ADB for debugging programs and transferring files, etc | ||||
1*SIM_CARD slot | Support SIM card, required for 4G | |||
1*BAT1 | Battery holder | |||
1*TF cassette | Data storage | |||
1*J3 interface | Support Camera devices | |||
1*LED1 | Power status indicator light | |||
1*LED2/3 | Network card status indicator light | |||
1*IR | Support wireless data transmission | |||
Other functions | Support power on | |||
Operating environment | Working temperature: -10 ℃~60 ℃; Working humidity: 5%~95% relative humidity, no condensation | |||
Operating system | Android7.1、 Android8.1、Android9.0 、Android10、Android11 system | |||
Q: What are the power specifications for the EK8800?
A: The motherboard requires a 12V DC input. The full-load power consumption is approximately 15W. We strictly recommend using a 12V/3A or higher power adapter.
Q: What is the physical size of the DC jack?
A: It uses a standard 5.5 * 2.5 mm DC interface (inner diameter 2.5mm).
Q: Does it support Auto-Power-On?
A: Yes, the motherboard is configured to Power On by Default (Auto-Power-On) when electricity is connected.
Q: What display outputs are supported, and can it run dual screens?
A: It features HDMI 2.0, LVDS, and EDP interfaces. It supports single-display output as well as dual-display replication (cloned mode).
Q: What are the maximum resolutions for each display interface?
HDMI 2.0: Up to 4K resolution ($3840 \times 2160$ @ 60Hz).
LVDS / EDP: Supports up to 2K resolution ($1920 \times 1080$ @ 60Hz).
Q: How do I switch between LVDS and EDP signals?
A: LVDS is the default signal output. To switch to EDP, you only need to flash the corresponding EDP firmware. No hardware/component modifications are required. * Note: The EDP interface utilizes an EDP-C 30-pin backlight-integrated screen cable.
Q: Does the motherboard support cameras?
A: Yes, it supports one MIPI Camera interface via a 30-pin FPC connector, capable of driving up to a 13-megapixel camera module.
Q: What are the specs for the wired LAN port? Does it support PXE or WOL?
A: It features a single RJ45 Gigabit Ethernet port powered by the Realtek 8211F/8211E chip. Please note that PXE Boot and Wake-on-LAN (WOL) are NOT supported.
Q: What wireless features are built-in?
A: It integrates an onboard RTL8821CS dual-band Wi-Fi/Bluetooth 2-in-1 module, supporting 2.4GHz/5GHz dual-band Wi-Fi and Bluetooth 4.2.
Q: Can I add a 4G or Wi-Fi module to the Mini-PCIE slot?
A: The Mini-PCIE slot is hardwired for USB signals only. It supports 4G modules (Full Netcom, Huawei, Mobile, Quectel modules, etc. combined with the onboard SIM card slot), but it does NOT support Wi-Fi modules.
Q: How many USB ports are available?
A: The board supports up to 6 * USB 2.0 ports/pins total (including 2 standard rear ports and onboard pin headers).
Q: How do I configure the USB-OTG mode?
A: You can change the operation mode via the 3-pin USB_OTG jumper cap:
Pins 1-2 (Default): HOST Mode. Used for regular USB peripherals like mice, keyboards, or U-disks.
Pins 2-3: DEVICE Mode. Used to connect the board to a computer for ADB debugging and program/file transfers.
Q: What serial communication protocols are supported?
A: The motherboard natively supports 4 serial channels via headers:
COM1 / COM2: TTL signal level by default.
COM3 / COM4: RS232 signal level by default.
Note: RS485 is NOT supported.
Q: What other expansion I/O headers are available?
A: It provides 2 standard GPIO headers (6-pin), 1 TP (Touch Panel) pin header, 1 * TF card slot, and an IR receiver pin header.
Q: What audio features are onboard?
A: It integrates an ES8336 audio controller:
LIN_OUT: A standard 3.5mm audio jack supporting 3-segment or 4-segment headphones.
MIC: Onboard 2-pin microphone input header.
INT_SPK: Built-in power amplifier pin header supporting dual-channel 8 $\Omega$ / 5W speakers.
Q: What OS versions does the board run?
A: It supports Android 7.1, 8.1, 9.0, 10, and 11.
Q: What do the physical buttons on the board do?
SW1: Reset button.
SW2: Power switch button.
SW3: Enters MASKROM mode for forced firmware flashing.
RECOVER1: Enters Recovery mode or USB Loader upgrade mode.
