guys I'm making a tiny line follower robot. it is a basic line following with two transistors.I use two pager motors and rubber wheel on cassette players as wheels.my question is this robot it too fast therefor it cant respond to line accordingly. there is no motor speed control mechanism implemented.can some one please tell me how to slow this down without making a big circuit?
Well, a simple way would be smaller wheels. Not sure how small your line follower is, but a great idea for small wheels can be found on some of the beetle bots
. Use the motor shaft itself as the wheel, you can even put some heat shrink on it for more traction. Also changing the angle of the motor will change speed of the robot: the closer the motors are to being parallel to the ground, the faster the robot goes.
I'm in hurry as I'm making this for an exibition and date is getting closer
Hope this doesn't come too late. I'm curious to hear what solution you used.