How do I start and stop a motor at the press of a button

Programming Support
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#1

How do I code a program on Vexcode Pro V5 that causes a motor to start turning when I press a button and to stop spinning when I press it again.

I have a basic Idea of how to do it, but I do not know how to write it.

If Button a is pressed and value is 0
set value to 1

If button a is pressed and value is 1, set value to 0’

If value of Button a == 1

make the motor spin

If value of Button a==0

brake

I want to use the code for an intake that starts and stops so that my team would not have to hold the button while going around the field

#2 
if button is pressed {

   if  intake is on {
      turn it off
  } else {
      turn it on
  }

}

Think you’ve got it from here with this pseudocode?

1 Like
#3

That won’t quite work. The intake will constantly quickly switching between the two, because the drive loop is repeating so quickly.

What OP needs to use is a rising-edge circuit. This will make the intake only switch states once when the button is pressed.

Here is a little scratch project I made demonstrating this concept: https://scratch.mit.edu/projects/494971523

Have fun progaming!

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#4

Could be wrong since I don’t use vexcode, but I’m pretty sure there’s a button param called pressed that runs the callback only once immediately when the button is pressed.

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