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Project: Micro:bit as a Remote controller

Sender

from microbit import *
import radio

chnl = 10
radio.config(channel=chnl)
radio.on()


while True:
    y = accelerometer.get_y()
    a = button_a.is_pressed()
    b = button_b.is_pressed()
    if  a and y<-300:
        # forwards left
        display.show(Image.ARROW_NW)
        radio.send("NW")
    elif a and y>300:
        # backwards left
        display.show(Image.ARROW_SW)
        radio.send("SW")
    elif b and y<-300:
        # forwards right
        display.show(Image.ARROW_NE)
        radio.send("NE")
    elif b and y>300:
        # backwards right
        display.show(Image.ARROW_SE)
        radio.send("SE")
    elif y>300:
        #backwards
        display.show(Image.ARROW_S)
        radio.send("S")
    elif y<-300:
        # forwards
        display.show(Image.ARROW_N)
        radio.send("N")
    sleep(20)

Receiver

from microbit import *
import radio

chnl = 10
radio.config(channel=chnl)
radio.on()

def Drive(lft,rgt):
    pin8.write_digital(0)
    pin12.write_digital(0)
    if lft<0:
        pin8.write_digital(1)
        lft = 1023 + lft
    if rgt<0:
        rgt = 1023 + rgt
        pin12.write_digital(1)
    pin0.write_analog(lft)
    pin1.write_analog(rgt)

while True:
    s = radio.receive()
    if s is not None:
        if s=="N":
            Drive(800,800)
        elif s=="S":
            Drive(-800,-800)
        elif s=="NE":
            Drive(800,200)
        elif s=="NW":
            Drive(200,800)
        elif s=="SE":
            Drive(-800,-200)
        elif s== "SW":
            Drive(-200,-800)
    else:
        Drive(0,0)
    sleep(20)