line follower circuit

[Egyptian]

Hi, i would like to ask about circuit u use in robocon 2007 this year, as u see the line is white and the background is blue .. and how do you recover ur sensors from noise and ambient light ? and do u use circuits like Compartor with a variable resistor and pair of photo transistor and IR led ?
thanks

[giáo sư cận]

Hi, i would like to ask about circuit u use in robocon 2007 this year, as u see the line is white and the background is blue .. and how do you recover ur sensors from noise and ambient light ? and do u use circuits like Compartor with a variable resistor and pair of photo transistor and IR led ?
thanks

Hi, i would like to ask about circuit u use in robocon 2007 this year, as u see the line is white and the background is blue .. and how do you recover ur sensors from noise and ambient light ? and do u use circuits like Compartor with a variable resistor and pair of photo transistor and IR led ?
thanks
we were participated in robocon 2005 ,2006 .So we have some experiences in designing circuit .you can check this link
http://www.embestdks.com/vn/DownloadDetails.php?iddownload=79&idmenu=72
it is line follower robot which we built in robocon 2005 .
we used IR sensor which we bought with the lowest price ,we make the sensor circuit by ourself .
to recover your sensor from noise and ambient ,you should solve by programming or shield sensors in a box

[Egyptian]

could you tell me in details please ? -_-

[giaosucan]

i will give you our schematic ,contact me at email adress giaosucan2000@yahoo.com