4 Sensor Line Follower for EV3?!?! 

3:10 the lion sleeps tonight meme

Hi, I have a suggestion for a tutorial: n-sensor PID line follower, where n is any even number, where it's no longer absurd! I have the algorithm! This will end the whole cycle for any more line follower algorithms! In fact, more sensors do make line following better, provided we program them properly :) As mentioned by Chris, it might not make sense to an FLL participant, but it really matters to a RoboCup Junior Rescue-Line participant. Here's how my algorithm goes for a 2-sensor PID line follower (github.com/aryan-02/2sensorpid ): Left Sensor's Reflected Light Intensity - Right Sensor's Reflected Light Intensity = Error Integral += Error (Initialized as 0) Derivative = Last Error - Error Move Steering -> steering = (Error * kP) + (Integral * kI) + (Derivative * kD) Now, the only thing that'll change in the algorithm for n sensors is the error calculation. Here's how you'll do that for 4 sensors: Let the sensor reflected light intensity values from left to right be a, b, c and d Now Error = [(2*a)+(1*b)] - [(1*c)+(2*d)]. Basically, we're giving each sensor its own priority constant, so if the extreme left sensor senses black, we'll have a really sharp turn. Similarly for a 6-sensor PID line follower: (Let sensor values from left to right be a, b, c, d, e and f) Error = [(3*a)+(2*b)+(1*c)]-[(1*d)+(2*e)+(3*f)] I hope you understand!

You can make the angle less sharp by not stoping a motor and moving the other move both but let be faster than the other and vice versa

"just for nothing" You probably never heard about RoboCup's Rescue Line...

Plz make a video on how to program ev3 to follow a wall at a 90 degree turn or any sharp turn

Hey, do you participate in other robotics competitions other than FLL and WRO?

I think a 6 sensor 3 in the front and 3 in the back so both sides are working not only the front

6 sensor plz??

good

Well... do you think it will survive our line following Isolierband Robotics Competition ? Not sure... check our tracks and let us know... (Facebook... Isolierband Robotics Competition)

Idea for tutorial: please demonstrate how to use multiplexers for those of us who have never used one. It would help me decide if I want to buy one. I am disabled and living on disability income is NOT a caviar and champagne lifestyle haha, so showing how things work from third-party vendors is actually a big help.

I want you to teach robot programming?

What about RCX?

How to contact you?

What sensors do you use for fll? We use 2 color sensors, and 1 gyro sensor and 1 touch sensor.

You sho7ld do a showcase on the mindsensors motor multiplexer, and the mindsensor sensor multiplexer

It looks like someone died at 3:10 XD

please send me program 4-sensors