Home > FreeRTOS, Hardware, Mediatek Wi-Fi > $14 LinkIt 7697 Bluetooth 4.2 LE and WiFi IoT Board is Powered by Mediatek MT7697 ARM Cortex-M4 MCU

$14 LinkIt 7697 Bluetooth 4.2 LE and WiFi IoT Board is Powered by Mediatek MT7697 ARM Cortex-M4 MCU

Mediatek Labs has launched a new IoT development, which on the surface looks similar to LinkIt Smart 7688 board, but the internal design is quite different as the MIPS processor and Linux OS, have been replaced by Mediatek MT7697 ARM Cortex-M4 processor running FreeRTOS, and beside WiFi, also includes support for Bluetooth 4.2 LE.

LinkIt 7697 board specifications:

  • Wireless SoC – Mediatek MT7697 ARM Cortex M4F MCU @ 192 MHz with 352KB RAM, 4MB flash, 802.11 b/g/n WiFi, Bluetooth 4.2 LE and a PMU
  • Expansion – 2x 14-pin header with 18x GPIO, 2x UART, 1x I2C, 1x SPI, 18x PWM, 4x EINT, 4x ADC (0 to 2.5V), 1x IrDA, 1x I2S
  • Debugging – 1x SWD, CP2102 UART to USB chipset
  • Misc – Reset and user buttons; power and user LEDs
  • Power Supply – 5V via micro USB port
  • Dimensions – 48 x 26 mm

Pinout Diagram – Click to Enlarge

The board can be programmed with the Arduino IDE, or if you need more control LinkIt SK for RTOS. The documentation is available on Mediatek Labs LinkIt MT7697 page. We’ll note that the board is based on Wrtnode7 module, also found in the upcoming 96Boards WRTnode IE board. Mediatek MT7697 appears to competes directly with Espressif ESP32, and already comes with a 5GHz variant (MT7697D).

Mediatek MT7697 SoC Block Diagram

LinkIt 7697 board is up for pre-order for $13.90 on Seeed Studio, and there’s also a Grove Starter Kit for LinkIt 7697 selling with breakout board, and plenty of module for $150. The board and starter kit should ship on June 15, 2017…

  1. Ivo
    April 26th, 2017 at 13:31 | #1

    Well, with 13,5€ for cheapest shipping to EU…

  2. April 26th, 2017 at 16:21 | #2

    @Ivo
    Indeed, postage is as much as the module, even for Singapore Post (15-30 days delivery). Really takes away the “impulse buy” factor…

  3. Paul
    April 27th, 2017 at 08:50 | #3

    If €13.5 to EU is really the best TRUE postage Seeed can do, if they made it avaible thru Aliexpress with the usual free Chinapost to most destinations then surely their sales would improve enormously ?

    Does anyone know if this, or a similar board can connect in ‘Client mode’ to a Remote AP ?

  4. JM
    April 27th, 2017 at 09:32 | #4

    Who would buy this instead of the vastly superior and cheaper ESP32?

  5. jessie
    April 27th, 2017 at 10:23 | #5

    You’re right, hope they can make some adjustments on postage

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