robot

hello, so i want to try to make my robot go for a straight line for a distance then after that distance he turns on a 90 degree angle without a sensor is't possible ?

What sort of robot?
Can it go in a straight line?

so it's a line follower he follows the black line but in the end of the line the black line turns to the white color and theres two walls and the robot has to go between them then after 700 cm he has to turn right with a 90 degree angle

then after 700 cm

How will the robot measure that distance?

thats what i want to know is't possible to do it without a sensor for exemple making the eobot go for a periode of time then turn

Try that and see how well it works.

welcoming any idea btw

Most people use wheel encoders.

so i have a black line follower in the end of the field theres no black line only the white board so i want to make my robot go for 700 cm then turn right (90 degree turn)is't possible to code it without a sensor?

Please try to keep the discussion to one thread.

Threads merged

Try it yourself - put on a blindfold and over-ear headphones, and try to walk seven metres and execute a perfect ninety degrees turn.

write a sketch that would have your robot follow the black line to the end
then after the end of the black like make it go between the two wall
note when the black line ends.
after 700 CM make it stop and turn 90degress to the right.

programming is like that.

do this first thing... follow the black like
if the black line ends...
go between the two walls, measure distance
after traveling for 700 cm, stop
turn right

just add in the correct information to read the sensors and drive the motor(s)