🐍 Python cheatsheet
+ +Just the basics to get coding using MicroPython on the BBC microbit python.microbit.org
+ + + +Features
+ +import microbit library
+ +Import every class, function and variable
+ +from microbit import *
Import only the display class
+ +from microbit import display
Import the microbit library
+ +import microbit
Buttons
+ +Was a button pressed?
+ +buttona.was_pressed()
Is a button currently pressed?
+ +buttonb.is_pressed()
Accelerometer
+ +Gestures: up, down, left, right, face up, face down, freefall, 3g, 6g, 8g, shake
Was the micro:bit shaken?
+ +accelerometer.was_gesture("shake")
Is the micro:bit currently falling?
+ +accelerometer.is_gesture("freefall")
What is the value of the accellerometer x axis?
+ +accelerometer.get_x()
Compass
+ +Run the compass calibration routine
+ +compass.calibrate()
What is the compass heading from 0 - 360 degrees?
+ +compass.heading()
What is the field strength on the y axis in nano teslas?
+ +compass.get_y()
Music
+ +Play happy birthday
+ +music.play(music.BIRTHDAY)
Create an array called tune of “NOTE OCTAVE:DURATION” then play it.
tune = ["C4:4", "D4:4", "E4:4", "C4:4", "C4:4", "D4:4", "E4:4", "C4:4",
+ "E4:4", "F4:4", "G4:8", "E4:4", "F4:4", "G4:8"]
+music.play(tune)
+Play a pitch (Frequency(Hz), Duration(ticks))
+ +music.pitch(440, 6)
Set the tempo
+ +music.set_tempo(ticks=4, bpm=120)
Radio
+ +Import the radio module
+ +import radio
Turn the radio on or off
+ +radio.on()
Send a string via radio
+ +radio.send('duck')
Return whatever radio message was received
+ +radio.receive()
Input/Output pins
+ +Is a pin currently being touched?
+ +pin0.is_touched()
Return the current value on a pin
+ +pin1.read_analog()
Write a value to a pin
+ +pin2.write-digital(1)
LED Display (text, image)
+ +Images: HEART, HEART_SMALL, HAPPY, SMILE, SAD,CONFUSED, ANGRY, ASLEEP, SURPRISED, SILLY, FABULOUS, MEH, YES, NO, CLOCK12, CLOCK11, CLOCK10, CLOCK9, CLOCK8, CLOCK7, CLOCK6, CLOCK5, CLOCK4, CLOCK3, CLOCK2, CLOCK1, ARROW_N, ARROW_NE, ARROW_E, ARROW_SE, ARROW_S, ARROW_SW, ARROW_W, ARROW_NW, TRIANGLE, TRIANGLE_LEFT, CHESSBOARD, DIAMOND, DIAMOND_SMALL, SQUARE, SQUARE_SMALL, RABBIT, COW, MUSIC_CROTCHET, MUSIC_QUAVER, MUSIC_QUAVERS, PITCHFORK, XMAS, PACMAN, TARGET, TSHIRT, ROLLERSKATE, DUCK, HOUSE, TORTOISE, BUTTERFLY, STICKFIGURE, GHOST, SWORD, GIRAFFE, SKULL, UMBRELLA, SNAKE
Scroll a string across the display
+ +display.scroll('hello world')
Show an image on the display
+ +display.show(Image.DUCK)
Return the light level from the display
+ +display.read_light_level()
Temperature
+ +What is the current temperature?
+ +temperature()
Neopixels
+ +Import the Neopixel module
+ +import neopixel
Initialise a strip of Neopixels (pin, number of Neopixels)
+ +neopixel.Neopixel(pin0, 10)
Send the current colour data to the Neopixels
+ +neopixel.Neopixel.show()
Pause
+ +Sleep for a number of milliseconds(ms)
+ +sleep(500)
+ +
Coding concepts
+ +Variables
+ +Set the compass heading to a variable
+ +direction = compass.heading()
Set the received radio message to a variable
+ +incoming = radio.receive()
Loops
+ +while True:
+ display.show(Image.HEART)
+ sleep(10)
+ display.show(Image.HEART_SMALL)
+ sleep(10)
+Conditions
+ +if accelerometer.was_gesture("shake"):
+ display.scroll('shake')
+ elif accelerometer.was_gesture("face down"):
+ display.show(Image.HAPPY)
+else:
+ display.clear()
+MicroPython Easter Eggs
+ +import love()