which is a good line follower robot to build

[sohailsameja]

IT SHOULD BE EASY TO MAKE,LITTLE COST
SHOULD NOT HAVE CHIPS ONLY TRANSISTORS OR OTHER STUFF AND USE AN LDR AND HAS A GOOD TURNING SYSTEM

[newInRobotics]

You have posted two microcontroller-less line followers, one of them uses LDR; it consists of one transistor, 2 motors and 1 LDR (very cheap); can make very sharp turns;

[sohailsameja]

THANK YOU VERY MUCH I SHALL MAKE BOTH,I FINALLY FOUND MY L293D IN THE DUSTBIN AFTER 3 DAYS.