Micro:bits Radio Temperature Sensor Display Python Coding

The above image shows 5 degrees C being displayed after the Sensor micro:bit was placed in a freezer.

The following Python code was written in the Mu editor. You compile the coding to two separate micro:bits that have power. Place the sensor into a freezer or on an ice pack and watch the temperature change making use of radio waves for communication.

This coding needs to be compiled onto the sensor micro:bit:
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# Language: Python     Transcribed by: Steve Madsen

# The microbit can make use of radio waves

# This coding needs to be compiled to one of

# two microbits. Both need their own power supply

from microbit import *

# import the radio module

import radio

# turn the radio on

radio.on()

while True:

  # the temperature of the microbit

  # is stored in a variable called temp

  temp = temperature()

  # send to the second microbit a

  # string of the the variable temp where it

  # will display

  radio.send(str(temp))

  # sleep for 3 seconds and repeat

  # sends the temp reading every 3 seconds

  sleep(3000)

  

  # Place the sensor microbit close to heat or 

  # in a freezer to see the display change.

  

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This second coding needs to be compiled onto a second micro:bit to display:

# Language: Python     Transcribed by: Steve Madsen

# The microbit can make use of radio waves

# This coding needs to be compiled to the second of

# two micobits. Both need their own power supply.

from microbit import *

# import the radio module

import radio

# turn the radio on

radio.on()

while True:

  temp = radio.receive()

  # if there is a temp reading transmitted

  # it will scroll accross the display

  if temp:

    display.scroll(temp)

    

  # Place the sensor microbit close to heat or 

  # in a freezer to see the display change.