Station Mode Procedure, the general procedure of using the pre-built scripts for Station Mode is as follows: navigate to the directory which contains the out-of-box scripts. Load wlcore module, start station mode, connect to an unsecured access point. Request an ip address from the access point. Ping the access point to verify the connection. Connecting to an Unsecured ap cd /usr/share/wl18xx./load_./sta_./sta_ ssid udhcpc -i wlan0, connecting to a secured ap cd /usr/share/wl18xx./load_./sta_./sta_ ssid wpa-psk password udhcpc -i wlan0, verifying Connectivity. In order to verify the connection, use the ping command. For example, if the Access point ip address is, we will invoke the following command on the evm: ping you should see the an output similar to the following: ping 56 data bytes 64 bytes from : seq0 ttl64 time1003.369 ms 64 bytes from.
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You will need to copy the contents in essay order for writing the script to work. Use the following commands instead: mkdir /usr/sbin/wlconf cp -r /usr/bin/wlconf /usr/sbin/wlconf. Run the script as follows:./. The script will take you through a series of hardware-dependent questions, and configure wlconf for your system. The following demos will guide you through the basic wi-fi examples using a set of pre-made scripts. These scripts, made for ease-of-use, can be found in /usr/share/wl18xx. Station Mode, this demo configures the wilink device to be in station mode. In station mode, the device acts as a wifi client and connects to an access point. Sta mode setup, hardware setup, the evm with the wilink device should be connected to a host computer through a serial interface. Serial specifications: 115200 baud, 8N1, ensure that the wilink device is mounted correctly onto the evm and that you have configured the target device using the procedure from earlier. The wilink device will be connecting to a nearby Access point, it can be secured or unsecured.
This wiki page will cover the basic demos available with the wilink8 device. The page is divided into sections discussing how to set up Station Mode, ap mode, multiRole mode, p2p, and Suspend Resume. All demos assume that the evm is running Linux using the ti linux sdk with the wilink 8 software integration completed. Configuring the target, to begin, we will need to configure the target using a pre-made setup script. The script will ask hardware dependent questions which will be used to correctly configure the target for use with the wilink 8 device. Establish a serial connection with the target device and log in as root. Terminal remote software such as minicom or putty can be used. Navigate to the location of the script /usr/sbin/wlconf cd /usr/sbin/wlconf, nOTE: If this directory doesn't exist, it is located elsewhere in the file system.
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The how to, build your own Tin Can waveguide wifi antenna (Cantenna). It's the easiest antenna design i know. Copyright Gregory rehm - all rights reserved. For information about reproducing this article in any format, contact the author. Military job Openings in the national guard 94F Special Electronic devices Repair 91F Small Arms/Artillery repair 31BMilitary police 11B Infantryman 11C Indirect Fire Infantryman 92l petroleum Laboratory Specials 12y geospatial Engineer 15q air Traffic Control Operator 35F Intelligence Analyst 56M Chaplain Assistant 91C Utilities Equipment.
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I mean they stomped them into the ground on signal strength - as much as 9 dB better. Every three dB is a doubling in power - that's three doublings (8x increase)! Of the waveguides, the nalley's "Big Chunk" took top marks. It was followed by the hunts Pasta sauce, my modified coffee can, and the Flickenger coffee can in that order. My three waveguide designs, which utilized the correct theoretical spacing, out performed the Flickenger Yuban coffee can handily. It seems that the design formulas for the waveguide design made a sizeable difference in performance.
In the yagis, it didn't matter much. This could be because neither Rob's nor my designs are anywhere near right for optimum performance for a yagi. I've decided that Yagi design is not for the timid or non-radio-expert. With these results, i'm convinced that the waveguide design is the way to go for cheap wireless networking. The performance is good, the cost is very low and the skill required is minimal. If you can eat a big can of stew, you can make a high performance antenna.
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To do this, i setup a wireless link and changed only the antenna- recording each antennas' performance under identical conditions. I didn't compare them to a commercial directional antenna as my only one has write a male connector and I don't have the right cable to hook it up yet. The contestants were (click on each for design specifications). The performance summary, the results surprised me! In our test, the Flickenger Pringles can did a little better than my modified Pringles design. Both did no better than the lucent omnidirectional. Now this is just on raw signal strength, noise rejection due to directivity still makes a directional antenna a better choice for some uses even if there is no gain benefit. The waveguides all soundly trounced the Pringles can designs.
On Feb 11th, rob, posted editor an article on his newest homebrew wifi antenna - a tin can waveguide! Rob used a large, 39oz. Coffee can and placed a quarter wavelength driven element a quarter wavelength from the back of the can. He reported good results - even better than the Pringles can design used by so many. For the antennas I was building, i was using different measurements based on the antenna design material I had been reading. Now I'm a late entry into this wireless stuff and the experts are going a different way than. It's time to benchmark. The Shootout, my plan was to get relative performance measurements for various designs (including mine) of homebrew antennas for 802.11b (wifi) wireless networks.
like a waveguide style design. Waveguide antennas don't use the director assembly (the washery bits and therefore are much simpler to build. An old tin can of the right size, about 5 in parts and 10 minutes of time are all that are needed. The math for computing correct sizing of the components in a waveguidewifi antenna is simple. . Formulas in hand, i started searching my cupboards for tin cans that fit the spec. I found myself staring at the products on the canned food aisle at the grocery store. I even went so far as going grocery shopping with a tape measure. . "No no, this spaghetti sauce looks much better. It's about three quarters of a wavelength in diameter, hon!".
A friend of mine built his before me and looking at his finished antenna got me excited to understand the theory of how it works. Reviewing his plan, word i came up with different spacing that he rob did. To see if I could improve upon the design, i built mine with corrected spacing. While waiting for some wireless equipment to come in, i started looking for my next antenna project. Oddly, the more i studied, the less i understood. There seems to be quite a bit of confusion on how the Pringles antenna works and what design category it falls under. The inner lining of a pringles can looks metallic, but my tests show it not.
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Homebrew antenna shootout, i've been, slashdotted! Read the, how. Greg's obsession de' jour, in my efforts to add the words "wireless savvy" to my network admin resume, i've been reading books and london web pages on radio propagation, antenna theory and design, and building wireless networks with 802.11 (wifi). One of the first things that got me excited was the. Published on the internet and in a fine book by, rob Flickenger, the net admin for, o'reilly, this design for a do-it-yourself, very inexpensive antenna made from a recycled junkfood container is as cool as the other side of the pillow. It seems that everyone is building and using these. The various community wireless network groups all talk about them and folks are reporting that they do the job.