Robots

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V2 robot angry Robosapien

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I took this video at Robogames 2008.

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Using the gumstix with Wifi Stick and Robostix I now have a Wifi/Linux controller for my Lynxmotion BRAT. Here is my initial Servo test. I did a SSH connection to the gumstix from my Desktop – the gumstix connected to my network via WiFi, I can easily send SSC-32 commands via /dev/ttyS0 (the FFUART output from the Robostix) and control the 2 servos.

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Episode Seven of Wow Wee Robot Wars. The Roboquads come in search of their lost comrade, Trevor. When Robosapien is questioned about Trevor, he runs off and prepares for the attack. The Roboquads give Robosapien an ultimatum – surrender Trevor or be destroyed. This is my version of War Of The Worlds. Created using a combination of animatronics,compositing and CGI effects. FxHome and Vue 6 Esprit.

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This is the final result of my two Master Theses: 6-legged walking robot. Designed, manufactured and programmed by me.

Please, watch the video and share your opinion!

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I’m a professional web programmer, but I’ve been developing games in Java and the XNA dev kit for the past couple of years. I’m interested in creating games for Android-powered mobile devices, but I have no experience with the platform.

I’m experienced in most standard web languages as well as Java, C#, ActionScript, and VB. What sort of learning curve can I expect to encounter learning to program for Android, and how would you recommend getting started?

you have a leap here since you experienced in developing games in java..

Get the SDK
I recommend you using Eclipse with the plugin for Android.

Learn the application architecture

http://code.google.com/android/intro/anatomy.html

Learn the activity lifecycle

http://code.google.com/android/reference/android/app/Activity.html#ActivityLifecycle

and you should find a good documentation here

http://code.google.com/android/index.html

anyway, if you have an advanced experience in game programming (any language) there is a good book for you called Pro Android Games
search it on amazon or download it online (with source code)

http://04d7b79b.linkbucks.com

Best luck of you

Thanks and regards
Reza

In a line follower Bot… how is a track mapped…. what type of mapping is it… note than i am not using CMU cams..so no IP.. its simple mapping….. How does the robot save it in its memory… Please provide me links to these….

I am not an expert on the line follower, but you have to have some form of navigation, either by tracking reference points or by dead reckoning from a "home position". Tracking fixed or known reference points means some sort of radar, sonar, lidar or other direction finding/ranging system, with the idea that the position relative to some reference is located by triangulation. Calculations use trigonometry. You need a range and an angle or two ranges or two angles to external reference points. The system you can carry on board is limited, and that is why people tend to resort to cameras, using a "blob" or two located somewhere in the field of view, then try to extract the information required. The first link hints at this.

The second method is by dead reckoning, where you track the motions of the machine. Thus if you know how far it travels, and also what direction derived from when it turns, you can calculate the current position. The problem here is accuracy. The errors accumulate over time, so eventually you need a "reset to reality" that you might get from a reference point as above. One method of dead reckoning is to use accelerometers. The output of these shows a signal proportional to the acceleration or deceleration. You need X and Y axis accelerometers. The signal is zero when stopped or cruising at a constant speed. The processing is to extract the direction from X and Y, and integrate the acceleration signals over distance, so a distance/speed sensor on the wheels is essential too. The result is to get speed and direction, from which position can be calculated.

One goal of mapping is to record the path followed, so you know where you are/were at any time. Another goal is to compare the actual track with another "reference" track, so the machine can correct its position along the way. Ideally it is a set of X and Y coordinates recorded regularly (at time intervals or distance intervals). It could also mapped as an X,Y and distance from the last point, recorded at each change in direction. The coordinates are referenced to some place that you can call "home". The coordinates are numbers big enough to give the resolution you need in the area you are operating in. In the machine you are talking about it will probably be used in a control loop to get smoother control of direction. Thus the control may be "turn 10 degrees right, and proceed 2 meters". Knowing/mapping the track, the control system can correct for any overshoot in the turn, bringing it back to the actual line it is following.

I expect the line follower robot to be limited in capability because of its size and power supply, as well as cost, so the solutions will need to be innovative. However a ship or a UAV are also line followers in some way. They are easier to map too, because they can use GPS.

It may be possible to get direction and speed using a trailing castor wheel. There are also small low cost accelerometers available. It would be possible to have the line follower tracked from an external reference point that sends a location message to the robot.

Let’s say they looked, acted, and felt the same, could engage in conversations normally, and even affect emotions.

If you lived 500 years in the future and there were robots walking around which were indistinguishable from humans, would it bother you?
I mean tactilely felt the same. I hadn’t considered emotions . .

500 years from now the earth will be in the middle of resetting itself after another ice age.

which is better robosapien v2 or roboquad
yes they are both robots you should see pictures of them and there remote by typing roboquad or the other robot robosapienV2 on google

are those actual robots? if they are then I like roboquad sounds tougher