Sample Code

Joystick A arrows

Coloured arrows dependent on direction of button A

import cbc
def arrows():
    sprites = {}
    sprites['up'] = cbc.Drawable.from_string(
                                    5, 5,
                                    "  y  "
                                    " yyy "
                                    "yyyyy"
                                    "  y  "
                                    "  y ")
    sprites['right'] = cbc.Drawable.from_string(
                                    5, 5,
                                    "  g  "
                                    "  gg "
                                    "ggggg"
                                    "  gg "
                                    "  g  ")
    sprites['left'] = cbc.Drawable.from_string(
                                    5, 5,
                                    "  r  "
                                    " rr  "
                                    "rrrrr"
                                    " rr  "
                                    "  r  ")
    sprites['down'] = cbc.Drawable.from_string(
                                    5, 5,
                                    "  b  "
                                    "  b  "
                                    "bbbbb"
                                    " bbb "
                                    "  b  ")
    sprites['middle'] = cbc.Drawable.from_string(
                                    5, 5,
                                    "     "
                                    "  y  "
                                    " rmg "
                                    "  b  "
                                    "     ")
    def display_arrow(e):
        if e.action:
            cbc.display.draw(0,0,sprites[e.direction])
    print('adding callback on joystick_a to display arrows')
    cbc.joystick_a.on_direction_any = display_arrow

arrows()

Force dependent colours (light painting)

CodeBug Connect’s LEDs change colour dependent on the force applied (try gentle shaking)

import cbc
def force_colour():
    sat = 1.0
    bright = 0.4
    for vec in cbc.accel_sensor:
        mag = vec.x*vec.x + vec.y*vec.y + vec.z*vec.z
        cbc.display.pixels[:, 0:5] = [[cbc.Color(h=mag/10.0, s=sat, b=bright)] * 5]*5

force_colour()

Pir Alarm

Connect the Pir as shown below

from machine import Pin
import cbc

def pir_alarm():

    pir_power = Pin(18, Pin.OUT, value=1)
    pir = Pin(25, Pin.IN)


    def handle_pir(e):
        if pir.value():
            cbc.display.pixels[:, 0:5] = [[cbc.Color('red')] * 5]*5
        else:
            cbc.display.clear()

    pir.irq(handler=handle_pir, trigger=Pin.IRQ_RISING|Pin.IRQ_FALLING)

pir_alarm()

Cheer lights

Tweet @cheerlights a colour and see your CodeBug Connect change colour. (You must have successfully setup a WiFi connection first)

import cbc
from remote_manage import WebSocketClient
from cbc import Color

def on_event(e):
    cbc.display.pixels[0,2] = Color(e[1].decode())

ws = WebSocketClient(url="ws://cheerlights.codebug.org.uk/cheer/", on_text_data=on_event)