Hopefully I get answer to this question, not sure if this is the correct forum here.
I want to know do laptops (for example, dell, hp etc.) have ONLY ONE NIC card? If so, then how using this card are we able to connect to LAN cable, we are able to connect to WI-FI.
When I see the network adapters, there are many? So what is the relationship between NIC and these adapters?
Can anyone please help me understand this?
There is a NIC for each type (Cable, WiFi and Blutooth ...).
For example: In a PC, which normally comes with one NIC for cable only, you can buy a Wifi NIC to make it connect to WiFi networks.
Related
I need some information about the router. I want to test the Broadband Device for the frequency range, Bandwidth and control the Bandwidth also so I need to take the control of Broadband Device is an option for the above questions please let me know. thanks for the contributions.
I think your question is not certainly clear that you can use your hotspot tethering service but still, the ISP will be the one who is providing you the broadband facility, so please edit your question and provide more information.
Me and my team we are working on a project for University. Our goal is to prevent people that are outside of a specific range to enter our wireless network. Lets say u are sitting in Starbucks and next to that there is another coffee shop. If u are a starbucks customer you will be able to enter the network and surf the internet. If you are sitting at the coffee shop next to starbucks though u will still see the wireless on your device but you won't be able to connect, or if you connect you will get kicked automatically.
My question is . Is there a way to get all the mac addresses of all devices in a specific area (Sturbucks building) and then only allow those to enter the wireless network. If thats possible through a mapping of a network or a device we don't care. We just want a way. And also is there a way to determine where exactly is a device,its location ? With or without a GPS.
The answer of all your questions is: NO.
You cannot get the mac adresses of foreign networks (sturbucks) without hacking the routers
You cannot get the location of a device in general. If the device is connected to your router, hotspot, Wlan, etc, you then could know that. In generall you cannot get the device GPS position, only if the user of the device allows that.
The other location possibility is the cell tower the user is logged in, that does not help you because you will not get the info in wich GSM cell the user is connected, without hacking the GSM network, and probably sturbucks and the uni has the same cell tower.
Remain wlan locationing: Here the same, the device might know it but you not.
Update:
There is one solution I remember now. Remeber the waste bins installed in London on public roads, they track when user pass by. They behave like WLAN devices, and track the mac adress. You could create such a system, maybe you cannot buy that. And place it near the entrance of the shop. Users which pass by have their mac adress recorded, you send that mac to your special wlan router and add that macs dynamically. Another possibility would be the use of bluetopot but this has to be enabled on the phone:
Look at the system how Apple's low energy blue tooth "location beacons" work: It is build for indoor positioning. you can triangulate the signal strength of a device. But probably the effort is beyond your project budget. (And still the useres woul dhave to enable blue tooth)
I am new to using arduino board. I will like to connect my samsung s3 to a medical device via a an ardunio board.
The first idea is to send/recieve data to/from the phone to the medica device via usb on an arduino board and the medical device recieve/send data from/to my phone via usb on the arduino board.
The second idea is send/recieve data to/from the phone to the medica device via WIFI on an arduino board via usb and the medical device recieve/send data from/to my phone via usb on the ardunio board.
Thanks for your proposed solutions.
All problems, including this one are best approached in increments. In this particular case, I assume you already have an arduino with a WiFi shield and a Samsung s3.
You don't mention the medical device or how it is programmed. But first, concentrate on how to get the Samsung to talk to your PC via wireless. In doing this you will learn a lot about how to write code for the Samsung and how to write code for a PC/Wireless connection. There are probably already sample applications that do this.
Next, identify how the arduino board will connected to the medical device and make the same connection from the arduino to your PC. Get this connection to work. I know there are many examples of how to do this.
Next, get the Samsung to talk just to the arduino board which maybe turns on an LED. Since you already learned how to code the Samsung to do wireless in the first step, then this step might be easy.
Next, connect the arduino to the PC and have the Arduino pass data back and forth between the PC and the Samsung.
After you have this "stack" of: Samsung <==> Arduino <==> PC working then consider what it would take to replace the PC with a medical device so that you have:
Samsung <==> Arduino <==> Medical Device
You can design your own series of incremental steps based on your more specific knowledge of the devices that you have. But the idea is the same, each step is something easy to do and easy to debug. But taking all the steps results in a complex system!
No one is able to do what you want on the first try (unless they have already developed the same or similar system). But everyone is capable of learning new material, if they are persistent.
Please keep me informed as you work on this, it is an interesting project!!
I am writing an application which allows a Linux machine to connect to internet over usb modem. I have multiple usb modems having same vendor and product ID; I cannot differentiate them using lsusb which gives vendor and product ID. Also giving IDs according to their usb ports does not solve my problem either, because I want to be able to use usb modems in whichever port I want.
Is there a unique identifier which I can use to differentiate my usb devices?
Using serial numbers I differetiated my usb modems. Here in this site basic commands are shown.
http://wiki.openmoko.org/wiki/Hardware:AT_Commands#Section_5.2C_General_Commands
I used "ATE+CGSN" command which gives serial number of the device.
We are planning for vehicle tracking system. We would like to relay on GPS Tracking System and view position report via Google Maps.
For hardware requirement we are thinking of GPS modem that can transmit data to our system.
Which GPD Modem is suitable for my project?
Use a smartphone. Haha.
On a more serious note, since it's for vehicular application only, there are a lot of companies that manufacture GPS modules (u-blox is one of them). Just google and you'll find thousands of companies manufacturing them. But before you choose a GPS module, make sure you check the regulations of your target country. If the module works on the Iridium satellite network, countries like India & China won't allow it as Iridium frequency is close to their military frequencies. In Europe you'll be better off with the Inmarsat network. So, do your homework & you should be good.
Also, if you're developing your own map interface, you might wanna ask the manufacturer if they have any existing mapping interface you can hook into or disable. You mag be charged for either.
All the best!
Are mobile networks (like GSM/GPRS/UMTS) available where you are?
if so check-out the tracking products from this site or this site (Google keywords: GPS GPRS)
If not, you should consider a custom solution, maybe someone like this company can help...
I have worked on a project that involved sending data over GSM/CDMA network. It used a simple GSM/CDMA modem connected to an embedded linux device and was a stationary piece of hardware. Attach a GPS device and it may very well be a tracking system. The problem is when the network drops or the device moves out of the network coverage area. I am not sure if there any GSM/CDMA modem available with GPS added to them as we didn't have this facility in our hardware and it was very much desirable. We needed to use a separate GPS device, mostly iPhone, separately to determine the lat long of our device.
You can use any GSM/GPRS modem equipped with GPS device. The modem will forward the GPS data to your central server through GPRS and at the server side you just need to process rcvd data and display it on google maps.