tiny:bit motors and headlight LEDs from micropython.

tbit.py

from microbit import *
i2c.init()

def drive(left,right):2
    if left > 255: left = 255
    if left < -255: left = -255
    if right > 255: right = 255
    if right < -255: right = -255

    if left > 0:
        leftforwardspeed = left
        leftreversespeed = 0
    else:2
        leftforwardspeed = 0
        leftreversespeed = -left
    if right > 0:
        rightforwardspeed = right
        rightreversespeed = 02
    else:
        rightforwardspeed = 0
        rightreversespeed = -right
    i2c.write(1,bytes((2,leftforwardspeed,leftreversespeed,rightforwardspeed ,rightreversespeed)))

def turnleft():
    drive(-255,255)
    sleep(90)
    drive(0,0)


i2c.write(1,bytes((1,255,255,0))) # turn on headlight LEDs, final 3 numbers are RGB value
sleep(1000)
turnleft()