from machine import Pin, PWM, ADC
import utime
import PicoRobotics
board.motorOn(1,f,50)
board.motorOn(2,f,50)
board.motorOn(3,f,100)
while True:
    board.motorOn(1,f,50)
    utime.sleep(7)
    board.motorOff(1)
    board.motorOn(3,r,60)
    utime.sleep(7)
    board.motorOff(3)
    board.motorOn(2,r,50)
    utime.sleep(100)
     board.motorOff(2)
     board.motorOn(3,f,100)
     utime.sleep(10)
     board.motorOn(2,f,50)
     utime.sleep(100)
     board.motorOff(2)
     board.motorOn(1,r,50)