Turning with inertial sensor

Programming Support
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#1

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So I have my robot turning to a certain degree in rotation and stop at that degree and it won’t stop and idk if it’s the code or the inertial sensor.

#2

if the input value for turn is negative, your robot will not turn because imu rotation value initializes to 0 by default (therefore the while loop condition is never satified because turn is already less than 0).

Edit: Ignore what I just said above lol. imu reading becomes negative if the robot turns countercloackwise, so imu.rotation() will never become greater than turn (which is a positive value)

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#3

So I got the clockwise(right) turn to work but the counterclockwise(left) turn is not reading the negative number in the code

#4

I think a quick fix would be instead of having imu.rotation(degrees) < turn, do fabs(imu.rotation(degrees)) < turn. This way you don’t have to worry about imu reading being negative, but the cost would be having to have separate functions for left turn and right turn.

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#5

What does fabs mean?

#6

taking the absolute value

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#7

Didn’t work I tried heading too and it didn’t work either

#8

heading wouldn’t work because it’s range is limited to 0-360, so there’s a jump going from 359 to 0
also you would need to reset your imu rotation at the beginning of your function

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#9

Thanks for the help I had a slow moment I had to flip the inequality sign