Arduino Breakout for LinkIt Smart 7688 Duo

原廠連結：http://www.seeedstudio.com/wiki/Arduino_Breakout_for_LinkIt_Smart_7688_Duo

Arduino Breakout for LinkIt Smart 7688 Duo is an Arduino Yún compatible (share the same MCU model) and a Grove port feature expansion board for LinkIt^TM Smart 7688 ^{Duo [1] [2]}development platform. This breakout board allows you to use different features from Arduino Yún and LinkIt Smart 7688 Duo which will help you build rich applications based on various, robust and compiled Arduino sketches. This breakout board will save a lot of work and makes prototyping easier through simplified wiring. So it helps a beginner get a quick start. It supports serial buses like I2C, UART and provides access to reserved original pins of LinkIt^TM Smart 7688 Duo. It also comes with USB, Ethernet and 3.5mm Audio ports.

^[1] LinkIt^TM Smart 7688 Duo is an open development board based on the OpenWrt Linux distribution, MT7688 and ATmega32u4. The board is designed especially to enable the prototyping of Rich Application IoT devices for Smart-Home.

^[2]Only one controller board can be main controller board at the same time.

Features

• Arduino Shield Compatible
• 1 × Ethernet to connect internet
• 1 × USB 2.0 for more peripherals
• Grove interfaces: I2C × 2, Analog × 3, Digital× 6, UART × 1
• 4-pin debug port × 1, ICSP × 1

Application ideas

• IoT/Gateway Device.
• Robotics
• Smart multimedia devices
• Teaching and learning

Specification

Hardware Overview

Note: As you need to plug LinkIt Smart 7688 Duo on this breakout, align the side with USB micro type-B of LinkIt Smart 7688 Duo to the side with UART2 of Arduino Breakout for LinkIt Smart 7688 Duo.

Grove interface

Connect rich Grove interfaced functional modules. With this kind of ports, you never need jumper wire or soldering work, and you can make more powerful applications with those functional modules.

Parts list

Getting started

Materials required

• LinkIt Smart 7688 × 1
• USB cable (type A to micro type-B) × 1
• USB to Serial adapter × 1
• Jumper wires × 3
• Grove - Buzzer × 1

Make some sound with a Grove Buzzer

1. Refer this to connect your LinkIt Smart 7688 Duo to internet.

Note 1: You can find Pin 8, Pin 9 and Pin GND close to the port to be connected LinkIt Smart 7688.
Note 2: You can plug jumper wires into MT7688 UART2 port instead of soldering them to Pin 8, Pin 9 and Pin GND.

2. Open a console after connecting an USB to Serial adapter to LinkIt Smart 7688 Duo.

3. Connect all parts as shown below:

Note: Plug Grove - Buzzer into port D4.

4. Refer this to build the Arduino environment for LinkIt Smart 7688 Duo platform on host computer.

5. Download firmata. Refer to here to install Arduino IDE for LinkIt Smart 7688 platform, and flash the file firmata to developent board.

Note: Following steps are carried out on embedded OS(OpenWRT).

6. Type pip install pyfirmata into console and press Enter to install python library pyfirmata.

7. Create a file named buzzer.py with typing vi buzzer.py in console, copy the code below into it.

from pyfirmata import Arduino, util
from time import sleep
board = Arduino('/dev/ttyS0')
print "Start blinking D4"
while True:
  board.digital[4].write(1)
  sleep(0.5)
  board.digital[4].write(0)
  sleep(0.5)

8. Save buzzer.py and type python buzzer.py to run the example code.

9. Now you will hear the buzzing.

Resources

• Schematic files
• Link to buy a LinkIt Smart 7688 Duo.
• Wiki link for LinkIt Smart 7688 Duo.
• OpenWrt