LinkIt Smart 7688 ( Development Plantform )

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 The Linklt Smart 7688 development platform offers two developments boards: 

    • Linklt Smart 7688: MPU only. Powered by Media Tek MT7688.
    • Linklt Smart 7688 Duo: MPU and MCU. Powered by Media Tek MT7688 and ATmega 32U4.

What is LinkIt Smart 7688

The LinkIt Smart 7688 is an open development board, based on the OpenWrt Linux distribution and MT7688. The board is designed especially to enable the prototyping of Rich IoT Application for Smart Home. The board offers you the memory and packet storage to enable robust video processing. The platform also offers options to create device applications in Python, Node.js and C programming language.

LinkIt Smart 7688 is a co-design product by Seeed Studio and MediaTek. It brings together the parties' knowledge in open hardware and industry leading reference designs for IoT devices to create this powerful development board.

LinkIt Smart 7688 is fully supported on the MediaTek Labs site: check out the LinkIt section and register here to download the SDK, participate in the Forums, and more.


    • Single input single output(1T1R) Wi-Fi 802.11 b/g/n.
    • Pin-out for GPIO, I2C, I2S, SPI, UART, PWM and Ethernet Port.
    • 580 MHz MIPS CPU.
    • 32MB flash and 128MB DDR2 RAM.
    • USB host.
    • Micro SD slot.


Category Feature Specification
    • MPU Chipset MT7688AN
Core MIPS24KEc
Clock speed 580MHz
Working voltage 3.3V
    • PCB Size Dimensions 55.7 x 26 mm
    • Memory Flash 32MB
    • Power Source USB Power 5V (USB micro-B)
VCC 3.3V (Pin Breakout)
    • GPIO Pin Count 22 (MT7688AN)
Voltage 3.3V
    • PWM Pin Count 4 (MT7688AN)
Voltage 3.3V
Max. Resolution 7 bits (customizable)
Maximum Frequency@Resolution 100kHz@1-bit50kHz@2-bit 25kHz@3-bit 12.5kHz@4-bit 6.25kHz@5-bit3.125kHz@6-bit 1.5625kHz@7-bit (Standard mode)
40MHz@1-bit20MHz@2-bit 10MHz@3-bit 5MHz@4-bit 2.5MHz@5-bit1.25Mhz@6-bit 625kHz@7-bit (Fast mode)
    • External Interrupts Pin Count 22 (MT7688AN)
    • SPI Set count 1 (MT7688AN)
Pin numbers P22, P23,P24 (Shared with on-board flash), P25
Max. Speed 25 MHz
    • SPI Slave Set count 1 (MT7688AN)
Pin numbers P28, P29, P30, P31
Max. Speed 25 MHz
    • I2S Set count 1 (MT7688AN)
Pin numbers P10, P11, P12, P13
    • I2C Set count 1
Pin numbers P20, P21
Speed 120K/400K
    • UART Lite Set count 3 (MT7688AN)
Pin numbers P8, P9, P16, P17, P18, P19
Max. Speed 0.5Mbps
    • USB Host Set count 1 (MT7688AN)
Pin numbers P6, P7
Speed Micro-AB
    • Communication Wi-Fi 1T1R 802.11 b/g/n (2.4G)
Ethernet 1-port 10/100 FE PHY
Pin numbers P2, P3, P4, P5
    • User Storage SD Card Micro SDSDXC

Schematic Diagram

Download Link


Smart WiFi Audio

It is a WiFi Audio which allows your mobile phone to connect to its WiFi and play the music in your phone. If you connect the Linklt Smart 7688 to your Router, the Audio will show the IP on the Grove RGB Backlight LCD, and also the song title.

Learn more at our Recipe.


Please visit our Wiki page for more info about this product. It will be highly appreciated if you can help improve the documents, add demo codes or tutorials. For technical support, please post your questions to our Forum.

Technical Details

Dimensions 56mm x 26mm x 18mm
Weight G.W 39g
Battery Exclude

Part List

LinkIt Smart 7688 1

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