VIM3
| Component | Purpose | |
|---|---|---|
| 1 | USB-A | USB 3.0 port that swaps to 2.0 when PCI-E is active, 900mA output |
| 2 | RJ-45 | Gigabit LAN port that supports Wake-On-LAN |
| 3 | HDMI | HDMI port supporting CEC |
| 4 | USB-C | USB-C port with USB power delivery (5-20V input) and 2.0 speeds, can be used for upgrading the OS |
| 5 | USB-A | USB 2.0 port that supports 500mA output |
| 6 | Fan Header | 4-wire fan header utilising pulse width modulation |
| 7 | Reset Button | Force reboot your VIM3 in the event of a system freeze |
| 8 | Function Button | Press this 3 times in 2 seconds to enter MaskROM mode |
| 9 | Power Button | This button turns on your VIM3 |
| A | M2 Hole | M2 clearance holes for a case, or adding a heatsink |
| B | G-Sensor | 3-axis accelerometer |
| C | RTC Header | A header for connecting a real-time clock (button) battery |
| D | 40-Pin GPIO | General input/output pins for VIM3’s SoC, or plugging-in a Toneboard |
| E | GPIO Expander | Increases VIM3’s available I/O beyond what A311D can provide |
| F | MCU | STM8S003 micro-controller with programmable EEPROM |
| G | WOL Switch | Power switch activated via Wake-On-LAN |
| H | Infrared Module | 2-channel infrared receiver for the Khadas IR remote |
| I | LEDs | Indicator LEDs |
| J | IPEX Antenna | Wi-Fi and Bluetooth antenna connector |
| K | IPEX Antenna | Wi-Fi and Bluetooth antenna connector |
| Component | Purpose | |
|---|---|---|
| 1 | VIN | 5-12V power input, supports Power-Over-Ethernet via M2X Extension |
| 2 | Micro-SD Slot | Molex Slot, spec version 2.x/3.x/4.x (SDSC/SDHC/SDXC) |
| 3 | Current Limit Switch | Prevents damage to VIM3 due to faulty loading conditions |
| 4 | M.2 Slot | PCIe 2.0 (x1 lane), supports M.2 2280 NVMe SSDs |
| 5 | TP | 10-pin 0.5mm pitch FPC connector for touch input |
| 6 | MIPI-DSI | 30-pin, 0.5mm pitch FPC connector for 4-lane 1080P displays |
| 7 | MIPI-CSI | 30-pin, 0.5mm pitch, 4-lane, dual cameras, 8MP image signal processing |
| 8 | SPI Flash | Flash memory module that interfaces over SPI |
| 9 | XPWR Pads | Connect an external power switch using these pads |
| A | M-Register | Allows the EMMC to enter MaskROM mode |
| B | S-Register | Allows the SPI Flash to enter MaskROM mode |
| Reset | Function | Power | Purpose |
|---|---|---|---|
| x | Force Reboot VIM3 | ||
| x | Enter Upgrade Mode (TST) | ||
| x | Power ON/Wake Up VIM3 | ||
| x | x | Enter Upgrade Mode (KEYS) | |
| x | x | x | Erase EMMC |
| Colour | Behaviour | Meaning |
|---|---|---|
| Blue | OFF | Power source disconnected |
| Solid ON | Power source connected, SBC turned off | |
| White | OFF | SBC turned off |
| Solid ON | SBC turned on | |
| Red | None | None |
The above behaviours are default out-of-the-box, and can be altered by a user. For example the white LED can be made to blink or breathe. For more information on how to program them via your favourite OS (each OS is different), please consult with experts at forum.khadas.com.
| SIGNAL | PIN | PIN | SIGNAL |
|---|---|---|---|
| 5V | 1 | 21 | GND |
| 5V | 2 | 22 | I2C_M3_SCL |
| USB_DM | 3 | 23 | I2C_M3_SDA |
| USB_DP | 4 | 24 | GND |
| GND | 5 | 25 | I2C_AO_SCK |
| VCC_MCU | 6 | 26 | I2C_AO_SDA |
| MCU_NRST | 7 | 27 | 3.3V |
| MCU_SWIM | 8 | 28 | GND |
| GND | 9 | 29 | I2SB_SCLK |
| ADC_CH0 | 10 | 30 | I2S_MCLK0 |
| 1.8V | 11 | 31 | I2SB_SDO |
| ADC_CH3 | 12 | 32 | I2SB_LRCK |
| SPDIF_OUT | 13 | 33 | I2SB_SDI |
| GND | 14 | 34 | GND |
| UARTC_RX | 15 | 35 | PWM_F |
| UARTC_TX | 16 | 36 | RTC_CLK |
| GND | 17 | 37 | GPIOH_4 |
| Linux_RX | 18 | 38 | MCU_PA1 |
| Linux_TX | 19 | 39 | GPIODZ_15 |
| 3.3V | 20 | 40 | GND |
VIM3L
| Component | Purpose | |
|---|---|---|
| 1 | USB-A | USB 3.0 port that swaps to 2.0 when PCI-E is active, 900mA output |
| 2 | RJ-45 | Gigabit LAN port that supports Wake-On-LAN |
| 3 | HDMI | HDMI port supporting CEC |
| 4 | USB-C | USB-C port with USB power delivery (5-20V input) and 2.0 speeds, can be used for upgrading the OS |
| 5 | USB-A | USB 2.0 port that supports 500mA output |
| 6 | Fan Header | 4-wire fan header utilising pulse width modulation |
| 7 | Reset Button | Force reboot your VIM3L in the event of a system freeze |
| 8 | Function Button | Press this 3 times in 2 seconds to enter MaskROM mode |
| 9 | Power Button | This button turns on your VIM3L |
| A | M2 Hole | M2 clearance holes for a case, or adding a heatsink |
| B | G-Sensor | 3-axis accelerometer |
| C | RTC Header | A header for connecting a real-time clock (button) battery |
| D | 40-Pin GPIO | General input/output pins for VIM3L’s SoC, or plugging-in a Toneboard |
| E | GPIO Expander | Increases VIM3L’s available I/O beyond what S905D3 can provide |
| F | MCU | STM8S003 micro-controller with programmable EEPROM |
| G | WOL Switch | Power switch activated via Wake-On-LAN |
| H | Infrared Module | 2-channel infrared receiver for the Khadas IR remote |
| I | LEDs | Indicator LEDs |
| J | IPEX Antenna | Wi-Fi and Bluetooth antenna connector |
| K | IPEX Antenna | Wi-Fi and Bluetooth antenna connector |
| Component | Purpose | |
|---|---|---|
| 1 | VIN | 5-12V power input, supports Power-Over-Ethernet via M2X Extension |
| 2 | Micro-SD Slot | Molex Slot, spec version 2.x/3.x/4.x (SDSC/SDHC/SDXC) |
| 3 | Current Limit Switch | Prevents damage to VIM3L due to faulty loading conditions |
| 4 | M.2 Slot | PCIe 2.0 (x1 lane), supports M.2 2280 NVMe SSDs |
| 5 | TP | 10-pin 0.5mm pitch FPC connector for touch input |
| 6 | MIPI-DSI | 30-pin, 0.5mm pitch FPC connector for 4-lane 1080P displays |
| 7 | MIPI-CSI | 30-pin, 0.5mm pitch, 4-lane, single camera, no image signal processor |
| 8 | SPI Flash | Flash memory module that interfaces over SPI |
| 9 | XPWR Pads | Connect an external power switch using these pads |
| A | M-Register | Allows the EMMC to enter MaskROM mode |
| B | S-Register | Allows the SPI Flash to enter MaskROM mode |
| C | Current Limit Switch | Prevents damage to VIM3L due to faulty loading conditions |
| Reset | Function | Power | Purpose |
|---|---|---|---|
| x | Force Reboot VIM3L | ||
| x | Enter Upgrade Mode (TST) | ||
| x | Power ON/Wake Up VIM3L | ||
| x | x | Enter Upgrade Mode (KEYS) | |
| x | x | x | Erase EMMC |
| Colour | Behaviour | Meaning |
|---|---|---|
| Blue | OFF | Power source disconnected |
| Solid ON | Power source connected, SBC turned off | |
| White | OFF | SBC turned off |
| Solid ON | SBC turned on | |
| Red | None | None |
The above behaviours are default out-of-the-box, and can be altered by a user. For example the white LED can be made to blink or breathe. For more information on how to program them via your favourite OS (each OS is different), please consult with experts at forum.khadas.com.
| SIGNAL | PIN | PIN | SIGNAL |
|---|---|---|---|
| 5V | 1 | 21 | GND |
| 5V | 2 | 22 | I2C_M3_SCL |
| USB_DM | 3 | 23 | I2C_M3_SDA |
| USB_DP | 4 | 24 | GND |
| GND | 5 | 25 | I2C_AO_SCK |
| VCC_MCU | 6 | 26 | I2C_AO_SDA |
| MCU_NRST | 7 | 27 | 3.3V |
| MCU_SWIM | 8 | 28 | GND |
| GND | 9 | 29 | I2SB_SCLK |
| ADC_CH0 | 10 | 30 | I2S_MCLK0 |
| 1.8V | 11 | 31 | I2SB_SDO |
| ADC_CH3 | 12 | 32 | I2SB_LRCK |
| SPDIF_OUT | 13 | 33 | I2SB_SDI |
| GND | 14 | 34 | GND |
| UARTC_RX | 15 | 35 | PWM_F |
| UARTC_TX | 16 | 36 | RTC_CLK |
| GND | 17 | 37 | GPIOH_4 |
| Linux_RX | 18 | 38 | MCU_PA1 |
| Linux_TX | 19 | 39 | GPIODZ_15 |
| 3.3V | 20 | 40 | GND |
Amlogic A311D, NPU Usage Guides
These following documentation links will help you get started with your VIM3’s 5.0 TOPS neural processing unit.
Learn More:
Flashing eMMC Operating System Using USB-C Cable
You’ll need these items if you want to use your laptop or desktop PC to upgrade your VIM3 SBC’s operating system stored in the eMMC storage. For example, Changing the bootup operating system from Android to Ubuntu, or installing a more exotic 3rd-party OS.
- USB to USB-C Cable (Older Computers)
- USB-C Male-to-Male Cable (Current Computers)
- Computer running Linux or Windows.
Learn More:
Firmware Images:
VIM3 Power Supply
Although your VIM3 SBC is compatible with various types of power supplies, these are the recommended specs for the best performance-output and stability.
- USB-C 24W Adapter
- USB-C Male-to-Male Cable
Learn More:
- Khadas Shop - USB-C 24W Adapter
- Khadas Shop - USB-C Cable (Male-to-Male)
- Extra Power Input For Khadas VIMs
- Khadas VIM Specifications
Displays & User Input
These items are useful when you need to connect your VIM3 SBC to an external display + keyBoard mouse + remote control, for use as a desktop computer or media center.
- 4K HDMI 2.0 Cable
- HDMI-Compatible 1080P/4K Monitor
- Wireless USB KeyBoard + Mouse
- CEC-Compatible Remote Control
Note: Please do not attach multiple cables with large heads that interfere with each other, as that may bend or twist the connectors, and this will cause intermittent connectivity issues after some time.
Learn More:
Watching Movies, Expanding Internal eMMC Storage
These items are useful if you wish to use your VIM3 SBC as a media center, for storing/downloading large movie files. A microSDXC UHS-I card is expensive, but its also fast enough for 4K video playback. In addition, you can connect external USB-2.0/3.0 SSDs or HDDs for storage that can encompass your entire media library.
- 64GB or larger, USB-2.0/3.0 HDD/SSD
- 64GB or larger, microSDXC UHS-I SD-Card
Learn More:
Tip: Nowadays most people stream their media , see How To Install LibreELEC.
Software Development / Advanced Crash Recovery
Extreme cases of crash-recovery will require you to use either the Khadas TST (VIM3), or the MRegister to reset your VIM3 SBC. A USB Serial Debug Tool is also useful for developers debugging complex software issues.
- Your fingers (for resetting a dead SBC via Khadas-TST, VIM3 only)
- Conductive Metal Tweezers (for resetting a dead SBC via MRegister)
- USB Serial Debug Tool(For diagnosing software/hardware issues)
Learn More:
- Khadas TST Upgrade Mode
- Mregister Upgrade Mode
- Amazon - Metal Tweezers
- Amazon - USB Serial Debug Tool
VIM3 Website
For more information, please see our website, read more decumentation, or visit our forum.