pxt-ev3/docs/coding/three-point-turn-2.md

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# Three Point Turn Activity 2
```blocks
brick.buttonEnter.onEvent(ButtonEvent.Bumped, function () {
motors.largeBC.tank(75, 30)
loops.pause(1500)
motors.largeBC.tank(-30, -75)
sensors.ultrasonic4.pauseUntil(UltrasonicSensorEvent.ObjectNear);
motors.largeBC.tank(0, 0)
loops.pause(1000)
motors.largeBC.tank(50, 50)
loops.pause(3000)
})
```