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8051 BASED BALL LIFTING ROBOT

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algazi

Thu Aug 23 2007, 07:25AM

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HEY GUYS I WANNA HEP FROM YOU PEOPLE

I AM IN TY DIP.

I HAVE PROJECT ABT CREATING ROBOT WHICH LIFT THE BALL

REQ ::
3 COLOR SENSOR
1 OBS DETECTOR
TWO SERVO MOTOR
ROBOTIC HAND
IR RECIEVER
I HAVE SOME ACTIONS FOR HIM TO FOLLOW

MAKE COLOR SENSOR ON
TAKE ROUND FOR FINDING RED COLOR BALL

IN DETECTED THEN GO NEAR TO IT. IF OBS DETECTED THE OVERCOME THE OBS
THEN GIVE ROBOTIC HAND SIGNAL 1.
SO ROBOTIC HAND WILL PICK IT UP
THEN MAKE IR RECEIVER ON TRACE THE TRANSMITTING STATION
GO THERE OVERCOME OBS IF DETECTED
MAKE ROBOTIC SENSOR SIGNAL 0
SO IT WILL PUT BALL DOWN
SEARCH FOR NEW ONE

Ajay

Thu Aug 23 2007, 08:16AM

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ok thats really a nice idea

is it for some kind of competition or what?
most important.. what have you done till now?

i expect you have selected the sensors you are going to use..

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algazi

Fri Aug 24 2007, 01:32AM

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AS AM USING COLOR DETECTOR FOR BALL
SO IF BALL DETECTED THEN I CAN I DENTIFY THAT BALL IS THERE

Ajay

Fri Aug 24 2007, 03:22AM

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what if there is any other obstacle with red color then? and is there any information you have in your mind till now? regarding what to do? or you just have the idea?

what sensor are you using for color detection?

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algazi

Wed Aug 29 2007, 04:25AM

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thats right
so what should i do for that

+ how the interfacing digram should be

which tpye of motor should i use

Ajay

Wed Aug 29 2007, 04:50AM

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Check this link for reference..

Fast Color-Independent Ball Detection for Mobile Robots

Also..
See this for more information on color sensing

Model Retine: Color Tracker

Come on man! there are lot of things on the internet.. you need to do research!!

www.rickeyworld.info
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algazi

algazi

Wed Aug 29 2007, 10:57PM

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THANX man for that but cant i get ready one for that purpose

algazi

Wed Aug 29 2007, 10:59PM

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& where to buy motors at low cost & which micro controller should i use

Ajay

Thu Aug 30 2007, 01:26AM

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why gave you this tricky idea?

I mean.. no doubt its good... but still very complicated for you i guess. use simple DC motors.. they are good and you can get whatever size and voltage you want.

Regarding micro.. i must say... whatever architecture you know use that microcontroller. Because it will be easy for you to program it.

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algazi

Thu Aug 30 2007, 05:20AM

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this project was given to us by our professor
we accepted it as a challenege and we're now stuck.
we have made our basic idea but need someone to help us improve this idea.
our idea:
ball diameter : 3inch
ball colour : red
colour sensors : atleast 3, maximum 5 sensors
obstacle detector : atleast 3
robotic arm (with rotation)

placement:
object sensor: 0.5inch above ground

considering the ball is exactly in front of the robot
colour sensor:
two at 1.5inch above ground (i.e. at centre of ball on either side of ball)
& one 2.9inch above ground (i.e at top of the ball)
& one 0.2inch above ground (i.e at base of ball)
.
the problems arising are:
1. if the ground is not exactly flat, then obstacle detectors (being close to the ground may generate errors)
2. if there is a larger ball place, also red colour, then how should the robot behave
3. while finding the ball (i.e rotating), the robot may get distracted or malfunction and may not stop at the exact postion
4. we need a robotic arm working on digital input... either we'll make it ourself (as last resort) or buy it (provided we can program it the way we need) but the actual problem arising is that the robotic arm should move fluently towards the ball and should not goof-up while trying to grip it.

could u share your idea, i mean... like how you would make such a robot.

[ Edited Thu Aug 30 2007, 05:37AM ]