Mobily 4G Router Unlock

Actually, you could find many sites which already explained how to unlock a Mobily 4G router. However I feel that there are missing information on those sites, so I will try to explain on my own way.

Long story short

I bought the router 2nd hand from expatriates. And of course before choosing this router I already searched in the Internet that we could unlock this router or not. At the beginning I am using the router locked/default, and after 2 months, with my Mobily data plan is about to finish, and due to its service is very bad, my plan is to switch to Zain. FYI, I have tried all these three service providers (STC, ZAIN and Mobily) and in my opinion Zain has the best service – internet plan. I wish I could switch also my prepaid voice, but my mobile number is already everywhere.

DISCLAIMER:

• This tutorial is only for your information, I am not responsible for any damages caused by this tutorial.
• Click each image to zoom it
• I wrote this article using the unlocked router 🙂

UPDATE:

• I found out that the firmware is very unstable, after 1-2 days, my router came to boot loop and I have to disassemble it. Even I had disassembled it, and removed the GSM module as some article said, it did not fix the problem.

Install BixVReader on Windows 10

I am learning the Windows Device Driver development, and came to the BixVReader on BixVReader and VSmartCard.

• Compiling from the source
  1. Clone the VSmartCard from github, go to .\vsmartcard\virtualsmartcard\win32 and you will find .sln file for visual studio, open in using visual studio 2015
  2. Install Windows Driver Kit 10.0, Windows SDK 10.0 and Wix Toolset
  3. Now you should be able to compile it successfully. In my case I did not change any configuration (default debug x64), it will produce the drivers file including the installer.
• Installing the drivers manually

DES MAC ISO 9797 ALG 3 M1 & M2 (M is padding method) on Python 3

In case anyone is looking for existing implementation of DES MAC ISO 9797 ALG3 for M1 and M2 on Python 3. The difference between M1 is start padding is 0x00 while M2 is 0x80. This algorithm is useful to validate a cryptogram returned from “Generate AC” command in EMV transactions.

Hope it helps 🙂

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My Final Thesis

Tomorrow I’ll return to my country. I’ve been here (korea) for 2 years and 3 months. I underwent good and also hard time here, and Alhamdulillah, gladly I could pass them all. Here is a small video what I did for almost 2 years work:

I’d like to thank for everyone who has helped me during my stay in Korea.

The details are on my thesis, please note that the data is in preliminary test.

Reference:

A 6-DOF Gait Rehabilitation Robot with Upper and Lower-Limb Connections that Allows Walking Velocity Updates on Various Terrains. Jungwon Yoon, Bondhan Novandy, Chul-ho Yoon, and Ki-Jong Park. IEEE Transactions on Mechatronics. Focused Sections: Healthcare Mechatronics. 2010. (Accepted)

Position control of BLDC motor using Proportional Integral Sliding Mode Control

SMC is one of the robust controller with ability to compensate the uncertain parameters, incomplete dynamics model and to reject disturbances. The additional of PI on the SMC gives several “extra” freedoms and flexibility in tuning and obtaining the desired performance.

Design scheme:
First, select a PI sliding surface. Second, from the sliding surface we derive the equivalent control. Third, the control output is achieved by adding the switching control output. The mathematics derivation is straight forward.

Here is an experiment of position control using Proportional sliding mode control of a BLDC motor.

Maxon EPOS with CANOpen

Any of you who is using EPOS from MAXON motor and LabVIEW Real-Time might face the same problem with me. The RS232 -IMHO- is not fast enough to achieve real-time communication between the EPOS and RT controller, also I am using the LV-RT for the main program, thus it will be difficult to synchronize between two LVs program from two different computers which mainly caused by the communication overhead. The problem got worse when I knew that we could not download the EPOS dll file onto the RT. After getting my answer from NI forum, I decided to use the CAN Protocol which can reach up to 1Mbps.

For the first trial, we have the IXXAT CAN-USB device. The question is, how to interface USB device to the RT? Because if I use this device, then it will be RT <-> USB <-> CAN, which means that I need a driver for IXXAT CAN-USB for the RT! I emailed the IXXAT company, the engineer replied that they do not support the LV-RT. Anyway I successfully send command through CANOpen with this device on Windows platform, but

Simulation and Implementation of Servo Motor Control with Sliding Mode Control (SMC) using Matlab and Labview

Sliding mode control is one of the robust control which can handle known uncertainties. It works by forcing the output state trajectory of the system towards our predefined sliding surface, so that it will slide on our surface in subsequent time. You can download the presentation file here, the title is “Simulation and Implementation of Servo Motor Control with Sliding Mode Control (SMC) using Matlab and Labview”.

The Matlab file will not be shared, I think the simulation is not difficult you can write in S-Function or by calling ODE solver from m-file. LabView source code can be seen (seeing source code or reading it :D) in the presentation file. I hope It is useful for the sake of education, sharing knowledge to the world -at least this is what I can do for now :(, hope I could give something useful to human being before I die-. Btw, if there’s something wrong with the equation please let me know. Oh and..don’t expect too much from the presentation file, I only did this less than 2 weeks, plus I am new to LabView and Matlab S-Function T_T.

After the encoder is installed to the motor I will post the video here, insyaAllah. Hope It will not take too much time for the experiment.

Updated 2008-05-07:

I did the experiment last february 2008, just able to upload it now caused by my laziness :D. I forgot to add in the presentation file, the inverter input is only positive DAC value from 0 to 10 V. Thus, if the control output is negative you need to make additional circuit to switch the direction (from forward to reverse, vice versa). (Look at my posting about the “Basic Switching Circuit”), also for safety you must add switches and hardwired to the inverter. Here are the setup and the video:

RC servo motor with labview

Another basic article. My first time with LabView Real-Time. I decided to write a program to control an R/C servo motor with LV-RT. With PXI-7358, I decided to use the digital I/O, just by turning on and off the port according to the time constraint. I did not read the manual in detail, so I am afraid I missed something, but when I did a test how long the time took for turning the digital port from on to off was around 1.5 ms, and from on to off took 250 uS. It means that it is not possible to drive the R/C servo with digital I/O when the pulse needed should be between 200-2500 uS.

Here’s the code when I did a measurement on the time of digital I/O switching on-off:

Stepper Motor With LabVIEW

Again, still LabVIEW beginner. 🙂 I am currently reading an ebook titled “LabVIEW based Advanced Instrumentation System” by S. Sumanthi and P. Surekha, and IMHO this is a good book for beginner. I wish I could finish reading this book as soon as possible, because time is what I do not have 😦

Two days ago, I tried to control a stepper motor with ULN2803 and LabVIEW. FYI -again- I am new to LabVIEW, so don’t expect too much from this article. I have NI-PCI 6221 and NI-PXI 7358 with me, the later is specifically manufactured for motion controller but still it has the digital I/O. And in this article I am using the motion controller digital I/O to control the stepper, if you only have DAQmx you also still can use it to drive your stepper motor, because to control stepper motor only need digital output which you can generate from your DAQmx.

Here’s the LV source code: