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Originally Posted by Astronouth7303
Unless you have a fairly high number of sensors, using PID control can be difficult.
One way to increase the speed is to put the sensors just on the edge of the tape, so that if you're a little off, then 1 will be "on" and 1 will be "off". You then slow down a motor to correct.
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He is right. One way to have high resolution is to use a camera. I have written PID line followers using both the CMU Cam and the RC and a DVT camera linked over ethernet to a laptop controlling a wheelchair.
If you dont have either alot of sensors or a camera, there are simpler algorithms.
What are you using for sensors?