EDU:BIT Extension for MicroPython
EDU:BIT is a beginner-friendly micro:bit kit specially designed to encourage kids to explore STEAM and learn coding.
This MicroPython library provides extension for EDU:BIT Training & Project Kit for micro:bit
Python editor for micro:bit
Step 1: Open Python Editor
Open Python editor at: https://python.microbit.org/v/3
Step 2: Add module
Download MicroPython module from GitHub: https://github.com/Bhavithiran97/micropython-edubit
Click on the Project button in the editor
Click Create file button and creaate 'edubit.py' file
Click Open button and add 'edubit.py' file
Click the right button in pop up and choose 'Replace file edubit.py'
- This kit has 4x NeoPixels (WS2812B programmable RGB LEDs) built-in.
- EDU:BIT's built-in neopixel works with the default neopixel module that comes with MicroPython on the BBC micro:bit.
- Use
import neopixelat the top of your program
Create a NeoPixel strip at pin P1 with 7 LEDs
from edubit import *
import neopixel
np = neopixel.NeoPixel(pin13, 4)Show color red on all RGB pixels
from edubit import *
import neopixel
np = neopixel.NeoPixel(pin13, 4)
for LED in range(4):
np[LED] = (255,0,0)
np.show()Show specific color on each RGB pixels
from edubit import *
import neopixel
np = neopixel.NeoPixel(pin13, 4)
#rainbow color
np[0]= 255,0,0 #red
np[1]= 255,255,0 #yellow
np[2]= 0,255,0 #green
np[3]= 75,0,130 #indigoclear all RGB pixels
np.clear()RGB values for commonly used colors
- red = 255,0,0
- orange = 255,164,0
- yellow = 255,255,0
- green = 0,255,0
- blue = 0,0,255
- indigo = 75,0,130
- violet = 138,43,226
- purple = 255,0,255
- white = 255,255,255
- black = 0,0,0
Find more information about Neopixel's MicroPython module here: https://microbit-micropython.readthedocs.io/en/latest/neopixel.html#module-neopixel
- EDU:BIT's built-in piezo buzzer works with the default music module that comes with MicroPython on the BBC micro:bit.
- Use
import musicat the top of your program
Play built-in melodies
from edubit import *
import music
music.play(music.DADADADUM)Play custom notes
from edubit import *
import music
#starting tune of "Twinkle Twinkle Little Star"
tune=["C4:1","C4:1","G4:1","G4:1","A4:1","A4:1","G4:1"]
music.set_tempo(ticks=2)
music.play(tune)Read digital pin 9
from edubit import *
while True:
if pin9.read_digital():
display.show(Image.HAPPY)
else:
display.show(Image.SAD)Write digital on pin 12
from edubit import *
while True:
pin12.write_digital(1)
sleep(500)
pin12.write_digital(0)
sleep(500)Find more information about analog MicroPython module here: https://microbit-micropython.readthedocs.io/en/v1.0.1/pin.html#module-microbit
Read analog pin 1
from edubit import *
while True:
if pin1.read_analog() > 500:
display.show(Image.HAPPY)
else:
display.show(Image.SAD)Write analog on pin 2
from edubit import *
while True:
pin12.write_analog(511)Find more information about analog MicroPython module here: https://microbit-micropython.readthedocs.io/en/v1.0.1/pin.html#pulse-width-modulation
from edubit import *
while True:
#Move forward at full speed
run_motor(Motor_All, Direction_Forward, speed=255)
sleep(1000)
#Move backward at half speed
run_motor(Motor_All, Direction_Backward, speed=128)
sleep(1000)
#Turn left at full speed
run_motor(Motor_M1, Direction_Backward, speed=255 )
run_motor(Motor_M2, Direction_Forward, speed=255 )
sleep(1000)
#Turn right at half speed
run_motor(Motor_M1, Direction_Forward, speed=128 )
run_motor(Motor_M2, Direction=Backward, speed=128 )
sleep(1000)
#Brake both motors
brake_motor(Motor_All)
sleep(1000)Rotate Servo 1 to 0 degree when button A is pressed, rotate Servo 1 to 180 degrees when button B is pressed, disable Servo 1 when button A+B pressed
from edubit import *
while True:
#Disable all servo when button A and B pressed
if button_a.is_pressed() and button_b.is_pressed():
disable_servo(Servo_All)
#Set servo 1 to position 0 degree (min)
elif button_a.is_pressed():
sets_servo_position(Servo_S1, position=0 )
#Set servo 1 to position 180 degree (max)
elif button_b.is_pressed():
sets_servo_position(Servo_S1, position=180 )Blink the all LEDs
from edubit import *
while True:
set_led(LED_All, 0)
sleep(1000)
set_led(LED_All, 1)
sleep(1000)Show running light on the LEDs.
from edubit import *
while True:
set_led(LED_Red, 1)
set_led(LED_Yellow, 0)
set_led(LED_Green, 0)
sleep(200)
set_led(LED_Red, 0)
set_led(LED_Yellow, 1)
set_led(LED_Green, 0)
sleep(200)
set_led(LED_Red, 0)
set_led(LED_Yellow, 0)
set_led(LED_Green, 1)
sleep(200)Show sound level
from edubit import *
while True:
display.scroll(read_sound_sensor())Show sad face when it's too noisy
from edubit import *
while True:
if read_sound_sensor() > 512:
display.show(Image.SAD)Count claps
from edubit import *
count = 0
while True:
if read_sound_sensor() > 512:
count += 1
display.scroll(count)Show potentiometer value
from edubit import *
while True:
display.scroll(read_pot_value())Show heart shape when the potentiometer is turned to the max
from edubit import *
while True:
if read_pot_value() > 1000:
display.show(Image.HAPPY)Show the IR sensor state
from edubit import *
while True:
display.scroll(read_IR_sensor())Show a target symbol when an object is detected
from edubit import *
while True:
if is_IR_sensor_triggered():
display.show(Image.TARGET)
else:
display.clear()This section is for advance user who interested in monitor the power of REKA:BIT.
Show power input voltage
from edubit import *
while True:
display.scroll(read_Vin())Show sad face if the voltage is low
from edubit import *
while True:
if is_low_batt():
display.show(Image.SAD)Show sad face if over voltage
from edubit import *
while True:
if is_overvoltage():
display.show(Image.SAD)Reset EDU:BIT
Add power_monitor() function in a while loop to monitor the power state of EDU:BIT. The motors and micro:bit will be reset when:
- Power switch is turned off and turned on while both DC barrel plug and micor B is connected
- DC barrel plug is plugged out and plugged in while micro B cable is connected to micro:bit
from edubit import *
#Move backward at half speed
run_motor(Motor_M2, Direction_Backward, speed=128)
sleep(1000)
#Brake motor
brake_motor(Motor_M2)
sleep(1000)
while True:
power_monitor()
#Move forward at full speed
run_motor(Motor_M1, Direction_Forward, speed=255)
sleep(1000)
#Brake motor
brake_motor(Motor_M1)
sleep(1000)
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