drivebase forever not available in beta.pybricks.com

[michaelwareman]

I am working on a robot and need that the robot drives forever until something happens. For example, the ultrasonic sees an object or the smart sensor sees one of the target objects. Since I am working with the beta pybricks version. The Drivebase has the straight, turn, curve, coordinates as available choices. The regular version allow for the forever option. Is this being dropped? If so what is an alternate to the drivebase drive forever? Currently the robot drives a few millimeters forward as it does each loop looking for obsticales or one of the smart sensor target objects.

[BertLindeman]

I think the block for drivebase.drive got somehow lost in the conversion to beta.pybricks.

In the current beta firmware the code is still there:

from pybricks.parameters import Direction, Port
from pybricks.pupdevices import Motor
from pybricks.robotics import DriveBase
from pybricks.tools import wait

# Set up.
motor = Motor(Port.D, Direction.CLOCKWISE)
motor_2 = Motor(Port.E, Direction.COUNTERCLOCKWISE)
drive_base = DriveBase(motor, motor_2, 56, 114)

speed = 250
turn = 0
# Drive forever in python:
drive_base.drive(speed, turn)
wait(5000)

I assume the pybricks developers will keep the drivebase.drive block in the next releases.
But it is up to them.

Bert

[laurensvalk]

Nothing is lost. There's a dedicated block for it now. There are only 4 blocks for the Drivebase. It should not be very hard to find :)

The drive block keeps all the finite movements in the drop down. It was getting a bit too long. Kids were getting lost between the options, so we reorganized it a little.

[BertLindeman]

Sorry, I forgot ...

[laurensvalk]

It's the third block here:

[michaelwareman]

That blocks works! But now I am thinking that I would like the robot to sway from side to side, say 45 degrees, while still moving forward. I thought a sine wave like control would work, but all I get is the robot turn in a circle. So, then I used these four blocks, but the problem is that the four blocks need to finish before moving on to go through the loop again.

Is there a way to use the above mentioned block so that the robot would start doing a turn to the left and then turn to the right. I come up with this but depending on the values I set the robot either turns in circle, or drives straight.

Any help would be greatly appreciated.

[laurensvalk]

Either aproach could work.

but the problem is that the four blocks need to finish before moving on to go through the loop again.

This section discusses exactly that. First there is an example that has the same problem as yours, and then an example of how the multitask with until one task solves it.