Hack 3g Usb Modem Internet

The prospect of having high speed communication channel between an embedded project and outer world is very tempting. The challenge can be addressed by using a WiFi module in those areas with WiFi coverage being available but what if it is not an option? Then there is no other choice but GSM (also referred as 2G) module which substantially elevates the cost of overall solution and yet it is incapable of providing communication speed high enough for many nowdays needs. For example, prices for GSM Arduino shields currently are ranging between $71 and $118!

1. Hack 3g Usb Modem Internet Password
2. Hack 3g Usb Modem Internet Speed

The actual numbers for data exchange rate, however, are not that high and typically are in the vicinity of 9.6 Kbps for 2G networks. On the other hand, there are mobile broadband options like which can deliver data at up to 42 Mbps (download) and up to 5.76 Mbps (upload). Add to this virtually symbolic price tag for modem – Vodafone 3G+ USB stick would cost you $9(!) and it starts sounding like a fairy tale. The table below represents dramatic difference between the two solutions: Modem typeCommunication speedPrice, AU$GSM Arduino Shield9.6Kbps71-118Vodafone K4606 3G HSDPA USB Modem42Mbps/5.76Mbps9Impressed by the inequality we were wondering whether it would be possible to use one of those USB broadband modems for embedded projects and eventually decided to pick Vodafone 3G+ modem to give it a try. Mbed LPC1768The mbed source code repository even had a fully functional library for interfacing with Vodafone mode; however, we didn’t have high hopes (and this turned to be the case shortly after) that it would immediately work with our modem. But before using USB port a few extra components including USB connector need to be wired.

This is described in detail at. Given that we were working on a prototype we took the risk of not using two pulldown resistors and to be honest haven’t noticed any detrimental effects during our experiments.

Ignoring the advice to power USB modem separately resulted in spurious resets of mbed board so eventually we derived +5V from the second USB port. The final prototype ready for experiments is given below. VodafoneUSBModemHTTPClientTest Successful CompilationBefore running the code APN was replaced with Australian Vodafone settings in Main.cppint ret = modem.connect('live.vodafone.com');The compiled code then was uploaded to mbed board for the first time. As expected, nothing worked. There was nothing happening in terminal application so we added one more line in VodafoneUSBModem/core/dbg.h.#ifdef cplusplusextern 'C' #endif#define DEBUG 4void debuginit(void).

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And immediately got plenty of useful information. The most interesting output is given below. The driver was trying to detect modem type by discovered device’s VID and PID and obviously it didn’t know anything about our modem model.

What has also become obvious after quick analysis of the output and source code was that the driver was designed to retrieve information about USB interfaces and endpoints slightly different depending on the modem type. In addition, upon being powered up, each modem initially works as USB mass storage device allowing to install device drivers and then it is switched to modem mode by a unique byte sequence. After filtering important lines from the third experiment debug we got the following list. It is clearly seen that interfaces and their endpoints were parsed, both serial ports were successfully opened, modem was initialised, APN was set but for some reasons PPP failed to open. Then it took us some time to understand how to load correct driver for modem mode.

We were stuck until we found and an original way of solving the problem:bmork:which is good in the sense that it confirms that no driver has captured any of the interfaces. If the modem really has vid:pid = 12d1:1c05, then something.should. happen when you type:Code:echo 12d1 1c05 /sys/bus/usb-serial/drivers/option1/newidIf you have Linux v3.5 or later, then you can verify the list of dynamically added IDs by doingCode:cat /sys/bus/usb-serial/drivers/option1/newidFinally Linux loaded the driver and assigned three interfaces to ttyUSB0, ttyUSB1 and ttyUSB2.

After that the only remaining part was to configuire wvdial and run it watching how PPP interface was being established. Then by opening new terminal it became obvious that ifconfig reported one additional ppp0 network interface and the Internet connection was wokring again, this time via the dongle in modem mode.

Hack 3g Usb Modem Internet Password

3G ModemsCruising InfoEquipment Pages3G ModemsWhat are 3G Modems? Practically, speaking, they allow you to getbroadband internet access anywhere you can get a cell-phone signal!This, of course, is virtually anywhere on land these days and even out to seaabout 15 miles or so (and further with special antennas). For thepurposes of this article, we refer to '3G' in the generic to refer tothis type of technology, even though 4G & higher speeds are now becomingavailable. OK, it doesn't let you update your webpage from the middleof the Atlantic Ocean, but it's still pretty cool.

Hack 3g Usb Modem Internet Speed

How often are you inthe middle of an ocean? Historically, we're on passage about 7% of thedays we're on board. We generally have a cell signal the other93% of the time.GSM is the cell-phone technology that's currently used all over the world. Most countrieshave a GSM network, even remote ones like,Nepal Telecom, Celcom (Malaysia), AIS (Thailand) & Telkom Kenya.It's not as popular in the USA but it's growing even there (although the USuses slightly different frequencies for its version of GSM, so a GSM phone or modem fromthe US may not work in other countries unless it's a special tri- or quad-bandunit). 3G is a technology that piggy-backs on the GSM cell signals,providing broadband internet access wherever cell signals are available.Many GSM phones these days have 3G modems built into them, and many allow 'tethering' so yourcomputer can get internet access using the phone's data signal.We first heard of this technology when we were in Brisbane in 2006.Summer in Brisbane is a time of intense thunderstorms, which sailboats don'tlike at all. Even a nearby lightning strike can destroy many of thesensitive electronics that we carry on board (we lost over $4,000 from a near miss). But the Brisbane airport radarcan see these thunderstorms and publishes graphics of them on the internet every minute orso.

They'lleven show their tracks over the last several minutes, so us cruisers can see ifthe storms are headed towards us or away. Pretty cool.But we didn't actually buy a 3G modem until we got to South Africa, payingR1,700 (about $240) for a unit that (we later found) was locked to the Vodacomsystem.