V5 coding help

VEX V5 Technical Support UNOFFICIAL Tech Support
#1

void usercontrol( void ) {
// User control code here, inside the loop
while (1==1){

FlywheelDown.spin(directionType::fwd,80,velocityUnits::rpm);
FlywheelUp.spin(directionType::fwd,-80,velocityUnits::rpm);
FrontL.spin(vex::directionType::fwd, Controller1.Axis3.value(), vex::velocityUnits::pct);
BackL.spin(vex::directionType::fwd, Controller1.Axis3.value(), vex::velocityUnits::pct);
FrontR.spin(vex::directionType::rev, Controller1.Axis2.value(), vex::velocityUnits::pct);
BackR.spin(vex::directionType::rev, Controller1.Axis2.value(), vex::velocityUnits::pct);

   
if(Controller1.ButtonL1.pressing())  {
    Intake.spin(directionType::fwd,-600,velocityUnits::rpm);
   
}
if(Controller1.ButtonL2.pressing())  {
    Intake.spin(directionType::rev,600,velocityUnits::rpm);
        }
else {
    Intake.stop(brakeType::brake);
}
  
if(Controller1.ButtonR1.pressing())  {
   
    
    FlywheelDown.spin(directionType::fwd,100,velocityUnits::rpm);
    FlywheelUp.spin(directionType::fwd,-100,velocityUnits::rpm);
    
    
    //-100, 100 is max, good for top flag shooting/full court
    
}
if(Controller1.ButtonR2.pressing())  {
   
    
    FlywheelDown.spin(directionType::fwd,70,velocityUnits::rpm);
    FlywheelUp.spin(directionType::fwd,-70,velocityUnits::rpm);
    
    
    //-100, 100 is max, good for top flag shooting/full court
    
}

  
if(Controller1.ButtonR2.pressing())  {
    
}
else {
    ;
}
if(Controller1.ButtonA.pressing()) {
    Scraper.spin(directionType::fwd,100,velocityUnits::rpm);
    
}   
if(Controller1.ButtonB.pressing()) {
    Scraper.spin(directionType::rev,100,velocityUnits::rpm);
    
} 
   
else {
    Scraper.stop(brakeType::brake);
}
vex::task::sleep(20); //Sleep the task for a short amount of time to prevent wasted resources.

}
}

The intake and scraper will only turn backwards, the other button does nothing even though it is programmed here.

#2

You have the motor spinning at positive speeds and spinning forward, and it spins at negative speeds in reverse in the other instance. You have a double negative.

In your code, I fixed the issue for the intake, but not the scraper. You need to take care of that. I want you to learn how to code, so If I just gave away the full answer I wouldn’t be doing that.

Code

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FlywheelDown.spin(directionType::fwd,80,velocityUnits::rpm);
FlywheelUp.spin(directionType::fwd,-80,velocityUnits::rpm);
FrontL.spin(vex::directionType::fwd, Controller1.Axis3.value(), vex::velocityUnits::pct);
BackL.spin(vex::directionType::fwd, Controller1.Axis3.value(), vex::velocityUnits::pct);
FrontR.spin(vex::directionType::rev, Controller1.Axis2.value(), vex::velocityUnits::pct);
BackR.spin(vex::directionType::rev, Controller1.Axis2.value(), vex::velocityUnits::pct);

   
if(Controller1.ButtonL1.pressing())  {
    Intake.spin(directionType::rev,600,velocityUnits::rpm);
   
}
if(Controller1.ButtonL2.pressing())  {
    Intake.spin(directionType::rev,-600,velocityUnits::rpm);
        }
else {
    Intake.stop(brakeType::brake);
}
  
if(Controller1.ButtonR1.pressing())  {
   
    
    FlywheelDown.spin(directionType::fwd,100,velocityUnits::rpm);
    FlywheelUp.spin(directionType::fwd,-100,velocityUnits::rpm);
    
    
    //-100, 100 is max, good for top flag shooting/full court
    
}
if(Controller1.ButtonR2.pressing())  {
   
    
    FlywheelDown.spin(directionType::fwd,70,velocityUnits::rpm);
    FlywheelUp.spin(directionType::fwd,-70,velocityUnits::rpm);
    
    
    //-100, 100 is max, good for top flag shooting/full court
    
}

  
if(Controller1.ButtonR2.pressing())  {
    
}
else {
    ;
}
if(Controller1.ButtonA.pressing()) {
    Scraper.spin(directionType::fwd,100,velocityUnits::rpm);
    
}   
if(Controller1.ButtonB.pressing()) {
    Scraper.spin(directionType::rev,100,velocityUnits::rpm);
    
} 
   
else {
    Scraper.stop(brakeType::brake);
}
vex::task::sleep(20);
#3

Thanks for the reply! Our team has found it hard to switch from robot c to c++ programming. We are attempting to make the switch in order to compete with the other v5 robots at worlds.

3 Likes
#4

Did the fix help?

#5

Also, every time through the loop you set ±80 rpm even when you’re pressing a button to set them to ±100 rpm or ±70 rpm. This will cause problems. You should really have a single if-else if-else loop, using the conditions for the if and else if, and putting the default in the else.

#6

sorry for the late response. I fixed this issue but I still cannot spin the intake backwards (I also fixed the flywheel issue)

#7

Make your three statements for the intake into one “block”. Have the buttonL2 be an elseif not an if, and keep the else.

#8

if(Controller1.ButtonL1.pressing()) {
Intake.spin(directionType::fwd,-600,velocityUnits::rpm);
}
else if(Controller1.ButtonL2.pressing()) { Intake.spin(directionType::rev,600,velocityUnits::rpm);
}
else {
Intake.stop(brakeType::brake)
}
That’s the code

Edit: formatting issues, sorry i can’t code format on an iPad.

1 Like
#9

for some reason, it still is not working

#10

Is the intake spinning at all? Like can you only go one way or does it just not spin?

Edit: Going reverse at 600 is the same as going forward -600. Do reverse -600 to get a reverse speed from forward 600

1 Like
#11

That’s what I told him earlier

#12

Your fix helped! Thank you!