Linkit connect with Arduino baord

Components

1 × Atmega32U4 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers

1 × Linkit connect module wifi module

1 × PCB

10 × a lot of passives

Project Logs

Collapse

Little Project

Will Whang • 05/01/2015 at 15:04 • 0 comments

Recently, I used wifi Arduino as my router to transport environment data to Xively. My sensor node is using nRF24l01 and a CR2032,

so I attach nRF24l01 to my Wifi Arduino, and after some programing

done.

Finished

Will Whang • 03/26/2015 at 14:52 • 0 comments

After some soldering and burn the Arduino bootloader,Linkit connect with Arduino is completed

for the software, I modify the sample code from Linkit connect cmd set to build a simple web server.(I'll put the details in instruction)

But this version has a little problem, I made a mistake of breaking net between 3.3V and VCC.

It has to be connected otherwise Atmega32U4 and Linkit connect module won't power up,

thankfully, the VCC output and the 3.3V output from LDO is pretty close. So I just solder a bridge to connect them.I'll update the version later on both github and OSHpark

Finish PCB layout

Will Whang • 03/05/2015 at 02:27 • 0 comments

Using eagle files from Linkit connect (Eagle file), I can use it for layout.

so connect UART and one GPIO for RSTwith Arduino , and breakout the five GPIO from module, PCB is finish.

Build Instructions

Collapse

1

Step 1

First, we need to upload the bin file to module
download https://github.com/will127534/7681-ATcmd
also SDK from Mediatek Labs
and connect Linkit connect module with any kind of UART to USB
with
RX <= TX
TX => RX
VCC <= 3.3V
GND <=> GND
then copy MT7681_ap_header.bin MT7681_sta_header.bin under /bin
to /Uploader in SDK.
Open a command line to /Uploader
enter mt7681_uploader.exe -f MT7681_sta_header.bin -c COMX
with COMX need to change to your com port.
you will see this after uploaded complete.
2

Step 2

Second, connect module and Arduino with :
Module <=> Arduino
RX <= TX
TX => RX
VCC <= 3.3V
GND <=> GND
RST <= Any output pin
3

Step 3

Last, copy all the files under Arduino Sample to your Arduino Library folder
then open Arduino IDE, select files>Samples>MT7681>connect_demo
Change ssid and key to the AP you want to connect
and RST to the Output connected to Linkit connect module.
also change constructor 7681Wifi wifi(&Serial1);
if using UNO = > change to Serial
and press Upload, then it is finished.

View all 3 instructions

Discussions

Linkit connect with Arduino baord

Description

Components