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.
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.
Micro SD slot.
|• PCB Size||Dimensions||55.7 x 26 mm|
|• Power Source||USB Power||5V (USB micro-B)|
|VCC||3.3V (Pin Breakout)|
|• GPIO||Pin Count||22 (MT7688AN)|
|• PWM||Pin Count||4 (MT7688AN)|
|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|
|• UART Lite||Set count||3 (MT7688AN)|
|Pin numbers||P8, P9, P16, P17, P18, P19|
|• USB Host||Set count||1 (MT7688AN)|
|Pin numbers||P6, P7|
|• 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|
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.
Could you tell me where you see"mt7688a has 5-port ethernet switch"? I only found that it has 1-port fast ethernet phy.
The datasheet mentions a 5 port switch, because the 1 port PHY is actually port 6 on the switch. it can have 5 ethernet ports.
The pinout for the linkit smart 7688 has 4 pins going to the ethernet port 0 on breakout board labelled MDI_P0 and there is another set of 4 pins labelled MDI_P1.
The uboot appears to set the MDI_P1 pins as part of SPIS, but i want to use as 2nd ethernet port.
Linkit Smart 7688 supports operating voltage of 3.3V. It does not have a Analog Pin.
According to the developer's guide, there is no gpio to reset wifi directly.
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