Brain storming

Engineers facing the world ...

Engineers believe they can fix everything and in case of failure, they are humble enough to accept carry the guilt personally and mention that it is them who can not solve the challenge, but a challenge always has a solution :-)

I like to be an engineer ;-)

Nice quote ...

To solve any problem, here are three questions to ask yourself: 

- First, what could I do? - Second, what could I read? - And third, who could I ask?

- Jim Rohn

Climbing patterns

Fast climbing with degrees from 0 - 360 degrees

Slow climbing with either upwards and downwards, or right and left

The combination of these two types of climbing can give a combination of very fast climbing plus precise climbing when needed. Also fast climbing method gives robot the chance to move to directions from 0 - 360 degrees.

Bluetooth Technology

Bluetooth uses very little energy !!! They are used in Tsunami detectors (ZIGBEE tech) ...

Advantages	Disadvantages
High throughput	Device discovery is slow in term of power usage and time
Resilience against interference	Keeping connections open is expensive in term of power usage
????????	??????????

Infrared Technology

Using Infrared for connecting micro-controllers is one of the available choices of wireless intercommunication between micro-controllers. Here is a short list of challenges and the benefits that using such technology would provide us :
Advantages

• Very low power requirement, hence it is best suitable for machinery with limited battery capacity, like mobile robots, laptops, pads, phones, etc.
• Inexpensive -> Not a very important issue in designing a revolutionary system. The redundancy is the most important feature.
• Very secure. The data flow among the source and target is unidirectional, meaning the direction of the infrared beam ensures that there in no leaked or move to nearby devices as it’s transmitted. 

Disadvantages 

• Data transmission happens in eye sight. -> Meaning you can not have it in a big robot.
• Short range communication -> Actually this is an advantage in our case, which brings more security.
• Easily gets interrupted by obstacle  -> Meaning you can not have it in a robot with several layers between micro-controllers. Almost any kind of obstacle interrupt the signal.
• Not a good choice under extreme weather conditions(sunlight, rain, pollution etc) -> This is the most negative point for this technology not be used in an offshore robot.

Depending on the area of application Infrared might be or might not be the right choice. E.g. the short range of availability would increase our security a lot, while exactly in Walloid project the harsh weather condition is very common in future platforms. Today, there are many technologies exists that are much better than IR like Bluetooth, Wi-Fi etc.

It is all about making a SYSTEM !!!

After visiting the Mercedes Benz factory in Bremen, and reading some articles/research papers form integrated operation in offshore world, I think the solution is all about System ... A system that can put both human controllers and robots in one system.

New calculations for positioning

Update : 06:01, 18.03.201, I am almost done with the C code on Arduino ... Too sleepy, going back home now ...

I should write a program that can simulate the workspace as I have no idea what are the valid points on workspace that are reachable by the feet.

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New calculations for positioning, the whole thing could not be easier than this ...

Positioning calculations, Walloid

Update 17.03.2011 : These calculations are totally wrong ... The whole concept is much easier than these things. See the new post about the positioning calculations.

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Although my supervisor meant that the positioning is happening through very easy geometrical calculation but I struggled a lot to find these equations. I am soon going to code this in my program for Walloid and come up with practical results. I should thank my dear friend Puya Afsharian who helped me a lot in figuring out some of the details.

More structured and better plans a head

I need more of structure on coding and planing for my thesis. Things like simple UML diagrams that makes understanding the whole thing much easier. UML diagrams in different levels for different tasks. I also need test scripting to test my code while running it.
will be updated



Artificial Intelligence

I am taking an Artificial Intelligence course at department of Informatics(INF5390), where Artificial Intelligence - A Modern Approach is the book. Our lecture believes in this book as a bible for AI and this makes it as a good reference in my master thesis as I see LOTS of similarities between what I have done/do/will do and what I learn here in an academic way. I think I can use this source both as an theory back-up for my master thesis and an explanation of my decision making process in my codes.