View Full Version : sensor arrangement

02-09-2006, 01:44 PM
Hey ppl, im new to robotics and presently working on a line follower,could u suggest me a suitable and accurate arrangement for my sensors, how many should i use...

02-09-2006, 04:13 PM
If you want good precision but not very "fine" then you can go ahead with the traditional 3-sensor arrangement which will give you nice speed and good response.

For the arrangement just search the net for line followers and you will get lots of link showing the traditional 3-sensor arrangement.

Start off with that one and then keep adding the sensors to increase accuracy

02-09-2006, 06:42 PM
Line follower speed depends on

1. sensors u use and number of sensors
2. performance of motor
3. Electronic components u use

IR sensor gives better than LDR's
Main thing is to control the speed of motor. U can add electronic speed gears depending on the number of sensors u use. Mostly speed is controlled by PWM. Otherwise u can use voltage variation using LM317 or any other way.
Electronic components switching speed is another factor
microcontroller > MOSFET > Power Transistor. If u want a basic line follower see my line follower

Bibin John

08-09-2009, 06:07 PM
For a beginner, it's good to start off with 3. It's less complicated and easier to debug. You can add more later on once you get the hang of things.