SeeedStudio LinkIt Smart 7688 Duo

multiple revisions of this device, use caution

bgn (N150)
LinkIt Smart 7688 Duo
Homepage	Product page
WikiDevi.wi-cat.ru	SeeedStudio LinkIt Smart 7688 Duo
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	SeeedStudio LinkIt Smart 7688 Duo
FCC ID	Z4T-LINKITS7688D
Type	IoT, development board
CPU1	MediaTek MT7688AN
CPU1 Type	MIPS 24KEc
CPU1 Speed	580 MHz
CPU2	Atmel ATmega32U4
CPU2 Speed	8 MHz
Flash1 Chip	Macronix MX25L25735FMI-10G
Flash1 Size	32 MiB33,554,432 B <br />262,144 Kib <br />32,768 KiB <br />256 Mib <br />0.0313 GiB <br /> (NOR)
Flash2 Chip	Atmel ATmega32U4
Flash2 Size	32 KiB 0.0313 MiB <br />32,768 B <br />256 Kib <br />0.25 Mib <br />3.051758e-5 GiB <br />
RAM1 Size	128 MiB134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> (DDR2 SDRAM)
RAM1 Chip	Nanya NT5TU64M16HG-ACI
RAM2 Size	2.5 KiB 0.00244 MiB <br />2,560 B <br />20 Kib <br />0.0195 Mib <br />2.384186e-6 GiB <br />
RAM2 Chip	Atmel ATmega32U4
ETH chip1	MediaTek MT7688AN
Ethernet Port Count	0-100MbE-LAN
Wired Standard	IEEE 802.3i/3u
802dot11 OUI: 9C:65:F9 (1 E, 2 W) Ethernet OUI: 9C:65:F9 (1 E, 2 W)
Stock bootloader	U-Boot 1.1.3 Ralink 4.3.0.0
Stock FW OS	Linux 3.18.21 OpenWrt 15.05 + linkit
Expansion IF types	USB 2.0, Micro SD Card slot
USB ports	1
SD/MMC Slots	1
USB Hub Compatible	Untested
Power	5 VDC, 2 A
Connector type	USB Female Micro-B
Serial Port (UART)	yes, (57600 8N1),
JTAG Port	yes, 8-pad header,
Flags: Micro SD Card slot, I2C, I2S, SPI, UART, GPIO
Additional chips 1A LDO Voltage Regulator;Torex;XC6220B;;1;
Other
Default SSID: LinkIt_Smart_7688_XXXXXX Default IP address: 192.168.100.1 the IP 192.168.100.1 is used by 57 additional devices of which 2 are SeeedStudio devices Default login user: root Default login password: change on install root:change on install credentials used by 1 additional devices of which 1 are SeeedStudio devices
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Retail
Availability	End of Life
End of Life date	2020
FCC approval date	16 October 2015
(Est.) release date	December 2015
(Est.) initial retail price (in USD):	$15.90
ASIN	B019YLW4GS
Country of manuf	China
Radio 1
Chip1	MediaTek MT7688AN
Wireless interface OUI	9C:65:F9,
Antenna Connector Type	U.FL
MIMO status	1x1:1
Wireless Standard	IEEE 802.11b/g/n
802.11n	up to 150 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.4 GHz
CPU1 brand Radio1 chip1 brand Radio1 chip2 brand SeeedStudio LinkIt Smart 7688 MediaTek MediaTek SeeedStudio LinkIt Smart 7688 Duo MediaTek MediaTek

For a list of all currently documented Atmel chipsets with specifications, see Atmel.
For a list of all currently documented MediaTek chipsets with specifications, see MediaTek.

For a list of all currently documented SeeedStudio device with specifications, see SeeedStudio.

• 150 Mbps - 1SS 2.4GHz 802.11n (40MHz chan.) = N150 class

Overview

See also: List of Single-board computers

Hardware specification

• CPU: MediaTek MT7688AN @580MHz

(MIPS 24KEc)

• MCU: Atmel ATmega32U4
• Memory: 128MB (SDRAM) DDR2
• Onboard Storage: 32MB NOR,

TF card (max.128GB)/MMC card

• Wi-Fi: 802.11bgn 1T1R
• USB: 1x USB 2.0
• Power Source: USB Female Micro-B

Links of Interest

• MediaTek LinkIt Smart 7688 and Smart 7688 DUO Boards Run OpenWRT for IoT Applications on CNX|Software
• Tiny, $13 IoT SBC runs OpenWrt on MediaTek MIPS SoC on CNX|Software

Flashing

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
OpenWrt Target: ramips
OpenWrt Subtarget: mt76x8
OpenWrt Package architecture: mipsel_24kc
Support started version: 15.05.1
Current supported version: 23.05.5

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