Tuesday, March 22, 2011

CrazyEngineers Forum

CrazyEngineers Forum

types of motors

Posted: 22 Mar 2011 12:58 PM PDT

i am still a beginner in robotics.mostly build level 1 robots.it didnt take me much time to figure out in level 1 bots chance to win mostly depends on the motor used.irrespective of the competition.

So i wanted to know the types of dc motors available in the market(i live in mumbai so addresses where i can get them are absolutely welcome)
And which motor are used for which competition?pros n cons.price.basically any information i can get.hope you CEans Can help me out!

Water pollution

Posted: 22 Mar 2011 10:00 AM PDT

There was a time when we used to consider water as God. In any religion or civilization may be Roman, Greek, Aryan or Greek etc we have a God of Water.

Sadly in 21st century we have kept that God for sale in market. We consider water as a consumable commodity which can be bought for money and waste and dishonor it.

There was a time when water was free for everyone now we pay money(Tax) for it. Someday we will pay tax for air too.

So my question is what can we do to control pollution and wastage of natural resources and to change people's attitude towards whole environmental scenario?
What say people? :rolleyes:

microcontroller 8051?

Posted: 22 Mar 2011 08:14 AM PDT

I am totally new to practical use of 8051? May I know how and which pin to be connected as input and which pin should be taken as output? Ex. for pick and place robot, I have a camera in front for detecting the presence of the object, and output of the camera should be sent to which pin of the micro controller? and from where the output should be taken?

Is WIPRO CEO's INR. 10 cr/year Salary Justified?

Posted: 22 Mar 2011 07:17 AM PDT

We of course can't influence Mr. Premji's decision, but we can vent out our jealousy by posting in this thread. Wipro has offered new revised package of Rs. 10 crore (Rs 10,00,00,000) to T K Kurien, the new CEO of its IT business. Note that considering the variable component, the salary will vary from minimum 3 crore to Rs. 10 crore, depending upon company's performance. But since the IT boom time is on, I expect Mr. Kurien to do fantastically well in coming years.

Now compare this with the following information taken from Wipro offers up to Rs 10 crore annual package to new CEO - Yahoo! India Finance

According to TCS'' Annual Report 2009-10, company CEO and Managing Director S Ramadorai received Rs 3.61 crore in salary, benefits and perks and commission for the period between April 1, 2009 and October 5, 2009.


Infosys CEO and MD S Gopalakrishnan received Rs 1.01 crore during the fiscal 2009-10, says the company''s annual report.

iPad 2 Launching In 25 More Countries, Excluding India

Posted: 22 Mar 2011 07:12 AM PDT

India has always been a dumping ground for technology and products for Apple. The company today announced that iPad 2 will be relased in 25 more countries across the globe in next few weeks and the list excludes India, for God (err, Steve) - Only - Knows reasons.

Source: Apple - Press Info - iPad 2 Arrives in 25 More Countries This Friday

Taking from above source -

iPad 2 with Wi-Fi will be available in Australia, Austria, Belgium, Canada, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Mexico, Netherlands, New Zealand, Norway, Poland, Portugal, Spain, Sweden, Switzerland and the UK on March 25 for a suggested retail price of $499 (US) for the 16GB model, $599 (US) for the 32GB model, $699 (US) the 64GB model. iPad 2 with Wi-Fi + 3G will be available for a suggested retail price of $629 (US) for the 16GB model, $729 (US) for the 32GB model and $829 (US) for the 64GB model. iPad 2 will be available in Hong Kong, Korea, Singapore and additional countries in April, and in many more countries around the world in the coming months. Further international availability and pricing will be announced at a later date.

NIB-1 & NIB-2 Addresses

Posted: 22 Mar 2011 06:59 AM PDT

I was trying to figure out the pathetic browsing speeds I experience on my broadband connection and found out that I'm on NIB-I network. My IP address starts with 59.xx ... and my speeds are thus limited to about 512 kbps.

Someone suggested that if the network provider switches my account over to NIB-2, to have my IP address starting with 117.xx..., I'll be able to get speeds in MB/s. Now apart from the obvious long-forms, I have absolutely no clue about what these guys were suggesting.

My questions are -

1. How do I determine which NIB I'm On.
2. How many NIBs are there in India (is that a stupid question?)
3. How does one switch between the backbones (if at all).

Looking forward to your responses.

Solution For Ejecting Mini CD Stuck in MacBook Drive

Posted: 22 Mar 2011 06:43 AM PDT

It was very stupid of me for not thinking before doing this. I put a Blackberry Curve Mini CD in my MacBook drive. And it got stuck there. It was neither getting detected nor coming out.

For a naive macbook user who is not aware that mini CDs are not compatible with the Mac CD Drive mechanism, this mistake is bound to happen.

I read about force ejecting on the net i.e. Open terminal and type:
drutil tray eject but that didn't work for me.

So, I just what we did is, put a business card inside the slot and pull up the cd and drag it out.
It took 5-6 tries with different angles and then it worked! :D

I hope you never get stuck this way, but if you do; this might help. :cool:

Unfortunate Affliction - By Vijay Phanshikar in Hitavada's Loud Thinking

Posted: 22 Mar 2011 05:51 AM PDT

I came across this excellent article and I want each one of you to read it. It SHOULD be an eye opener for those who aren't aware. I look forward to your comments on this article in this thread.

Source: The Hitavada.

Upgrade To Firefox 4.0 On uBuntu Instructions

Posted: 22 Mar 2011 05:27 AM PDT

It might be silly, but I'm not able to figure out how to upgrade Firefox to latest stable 4.0. I've searched the Internet but can't find proper instructions on how to do the upgrade, without losing on the bookmarks, history and settings.

All I know is that I can simply extract the browser somewhere on /home and then create a launcher for it. Does anyone have instructions for the upgrade?

Mozilla Firefox 4 Free Themes Download

Posted: 22 Mar 2011 05:21 AM PDT

Just downloaded Mozilla Firefox 4. I wanted to try some themes on the new firefox.

Could anyone share a few useful resources? :rolleyes:

Scrolling LED Display without using uP..!!

Posted: 22 Mar 2011 03:15 AM PDT

Hi,


Check my project, Scrolling displays in numeric.

In this project i have used basic logical IC's which are common to all student.
here is the list of component used.

1.) Power supply (12V).
2.) Clock pulse ( 555 IC).
3.) Decade counters ( 4017 IC).
4.) Couple of AND GATES ( CMOS 4081/ TTL 7408).
5.) SEVEN Segment display (as per message).
6.) BCD to SEVEN Segment Driver ( IC TTL 7447/ CMOS 4011).
7.) OR GATES (7432).
8.) A wire, PCB, switches, etc…

Here is a video:

Guest Articles On VoiCE

Posted: 22 Mar 2011 02:26 AM PDT

Do you wish to publish an article on our official blog 'VoiCE'? You can do so right away. Just compose a 100% original article (without any copy-pasted content) and send it to editor [at] [crazyengineers] [dot] com.

If we like your writing style, we'll make an offer to you to join our author team and get paid to write articles for VoiCE.

I repeat: We need 100% original articles. We are way smarter in catching copy-cats, so don't waste our and your time as well. :)

to count no of elements in list using prolog programming?

Posted: 22 Mar 2011 02:09 AM PDT

if there is list L like [1,4,5,23,4,43] then what are rules or procedure required to count the element of list using recursion in prolog?

If You Like A Post On CrazyEngineers...

Posted: 22 Mar 2011 02:08 AM PDT

CEans,

My personal appeal to all of you - if you like any post on CrazyEngineers, please hit the 'like' link in the bottom-right corner of the post. It serves two purpose -

1. Each like received on post made by user is notified to the poster and motivates him/her to contribute more informative and useful posts on CE. Thus making CE useful to everyone.

2. It makes easier for everyone to find out most useful & interesting content in any discussion quickly (through the likes tree at the top of any thread).

This facility is available only to the members of CrazyEngineers :) You may also share the post with your friends on Twitter, Stumbleupon, Digg or Facebook.

Your questions, comments in this thread -> http://www.crazyengineers.com/forum/...-you-like.html

CE - Reviews To CE - Gadgets

Posted: 22 Mar 2011 02:00 AM PDT

I've been thinking of changing the name of CE Reviews section to CE Gadgets (or something similar) to widen the scope of the section and also get CEans to contribute to it.

We will then be able to discuss all the gadgets on the planet. If you support this change, please suggest names we can have for that section.

:)
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