Micro:Bit

Light Sensor & Sound

Both Input (light level) & Output (show)

Display Light Level

You will create a program to display the light level on your micro:bit

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Your program should forever:

1. Show the current Light Level
2. Clear the screen
3. Pause for ¼ - 1 second (250-1000 ms)

Download your programed named as LightSound and flash to your micro:bit. Make sure to test in various light levels & pay attention to the numbers displayed. Use a flashlight to make light brighter or use something to cover your micro:bit to make it darker.���

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Code you will need:

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Plot Light Level

You will rewrite your LightSound program to display a bar graph of the light level on your micro:bit.

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Your program should forever plot the current Light Level with a maximum value of 255.

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Again download your program named as LightSound and flash to your micro:bit. You will be replacing the program you made on slide 3. Test with varying light levels & watch the display.���

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Code you will need:

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255

Add Sound

Your program should forever plot the current Light Level with a maximum value of 255 AND play one or more notes or a song based on a condition. Think back to the light levels you saw in your first program and use those to create a condition that will sometimes happen. Add your new code into your forever loop - do NOT delete your previous code.

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Want more notes than you see or need Hz value for JavaScript, check out Player Piano.

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Download your program named as LightSound. You will be replacing the program you made on slide 4.

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Follow the Hack Your Headphones instructions to play sound through your headphones from the micro:bit.

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Copy your program to micro:bit, and test! ��

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Code you will need:

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Optional Extension:

Add code to button A or B (or both) to start a melody when the button is pressed. Do NOT repeat this forever. You need to be able to hear the response to light levels.

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You decide which condition OR conditions (use else if/else for multiple conditions)

You decide which music play boxes (play tone OR play ringtone) to use & which tone(s)

Radio Challenge

Find a partner and work together to complete the challenge. You must both use the same radio group number - use the number of one of your computers to make sure it is unique.

• Micro:bit 1 - Program this micro:bit to forever read the light level and send it using the radio to micro:bit 2 in one-second intervals. This micro:bit might also want display the light level or plot the light level.
• Micro:bit 2 - Program this micro:bit to receive radio transmissions from micro:bit 1 and then forever (you will need a while true block) plot the light level received (not the light level on micro:bit 2) and sound an alarm if the light level falls below a certain level (use multiple play tone blocks for this).

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You will need the Radio Reference Documents.

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Download your program named as LightSoundRadio1 OR LightSoundRadio2. Copy your program to the micro:bit, and test! Make sure to test in various light levels.���

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