microbit_i2c_motor.py

#MicroPython + Grove I2C motor driver 
from microbit import *

#i2c.init(freq=100000, sda=pin20, scl=pin19)

while True:
    # Forwards
    print('Forwards')
    display.show(Image.ARROW_N)
    i2c.write(0x0f, bytearray([0x82,0x46,0x46]))
    i2c.write(0x0f, bytearray([0xaa,0x0a,0x01]))
    sleep(3000)
    # Stop
    i2c.write(0x0f, bytearray([0x82,0x00,0x00]))
    i2c.write(0x0f, bytearray([0xaa,0x0a,0x01]))
    sleep(2000)
    # Backwards
    display.show(Image.ARROW_S)
    print('Backwards')
    i2c.write(0x0f, bytearray([0x82,0x46,0x46]))
    i2c.write(0x0f, bytearray([0xaa,0x05,0x01]))
    sleep(3000)
    # Stop
    i2c.write(0x0f, bytearray([0x82,0x00,0x00]))
    i2c.write(0x0f, bytearray([0xaa,0x0a,0x01]))
    sleep(2000)
    # Slow Turn Left
    display.show(Image.ARROW_W)
    print('Left Turn')
    i2c.write(0x0f, bytearray([0x82,0x46,0x46]))
    i2c.write(0x0f, bytearray([0xaa,0x09,0x01]))
    sleep(3000)
    # Stop
    i2c.write(0x0f, bytearray([0x82,0x00,0x00]))
    i2c.write(0x0f, bytearray([0xaa,0x0a,0x01]))
    sleep(2000)
    # Sharp Right Turn
    display.show(Image.ARROW_E)
    print('Right Turn')
    i2c.write(0x0f, bytearray([0x82,0x46,0x46]))
    i2c.write(0x0f, bytearray([0xaa,0x06,0x01]))
    sleep(3000)
    # Stop
    i2c.write(0x0f, bytearray([0x82,0x00,0x00]))
    i2c.write(0x0f, bytearray([0xaa,0x0a,0x01]))
    sleep(5000)