upgrade tp link mr3020 to the latest firmware

-    download the latest firmware from http://www.tp-link.com/en/support/download/?model=TL-MR3020&version=V1#tbl_j 

first plug an ethernet cable to pc and the tp-link mr3020. we use cable because its more reliable than wireless. because upgrade firmware need stability. make sure pc power keep on while doing these action. because if the main process got interupted while updating firmware, it can brick the hardware it self. so using an ups is recommended.

change the ip of your lan. in windows 7 it can be done from start > control panel > network and internet > network and sharing center > adapter setting > local area network > properties > tcp ip v4 and change the ip from 192.168.1.1-X      (X= any number from 1-253)

now open your browser and point it to ip 192.168.0.254 you will be prompted by a box asking for login

the default user is admin and password admin


on left side bar u can find system tool > firmware upgrade. choose the firmware that we already download.
when asked are you sure bla bla bla... just press ok.. then wait until the router reboot. after that check the status bar.

voila... the router just upgraded well. you can see the version changed after we flash the new firmware. thats it

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OpenWrt on TL MR3020 controlling Arduino

After bricking one router i decided not to try to increase the storage and go with the capabilities which it already have.
TL-MR3020 from TP-LINK have a UART but the problem with interconnection was  TL-MR3020 out puts 3.3v and Arduino UNO is 5v. So after trying couple for methods trying to level the serial data voltage, finally 74LS04 is used the step up the TX from router to 5v and it was success and Arduino see the data.
Then tried to run a shell script from a webpage run in web server inside the router.
After couple of frustrations i manage to run with html+javascript...thats a long story...
Anyways it works perfectly and more mods will be done soon.

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OpenWrt on TL MR3020 controlling Arduino CONTINUED

Temperature Monitoring added

Now temperature sensor data is view-able from the web interface, LM35 attached to arduino senses the temperature. Once the status update request send from the router to arduino in a given interval, Arduino replies with the pin status and sensor data.
That data can be stored in a Lite DB for further use or to draw the graph on the web GUI. Currently it is displayed on the GUI for testing purposes.

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