Embedded Files
Lesson Overview
Lesson Overview
Students are able to learn event-based programming and use buttons and music as event triggers.
Students are able to produce projects that emit light and sound when triggered by an event.
6.4.2 Describe the function of all hardware used in programming.6.4.5 Connect hardware for products that emit light, sound, and movement.6.4.7 Present the program that has been produced.
Did you know that sheep move in groups to protect themselves from danger?
Did you know that sheep move in groups to protect themselves from danger?
When a sheep feels threatened, it will make noise to communicate with the other sheeps.
When a sheep feels threatened, it will make noise to communicate with the other sheeps.
Hmm... how does micro:bit trigger code execution following a specific event?
Hmm... how does micro:bit trigger code execution following a specific event?
Event-based programming
Event-based programming
Event-triggered programs.
Example of an event-based programming flow chart.
Example of an event block.
Let’s learn event-based programming with micro: bit.
Let’s learn event-based programming with micro: bit.
Video 4: Sheep
Video 4: Sheep
Watch and follow the steps in the video to further understand a microcontroller which is named micro:bit.
Watch and follow the steps in the video to further understand a microcontroller which is named micro:bit.
Materials and components that are needed:
micro: bit + USB wire + buzzer + 2 alligator clips
Computer
Visit makecode.microbit.org
Color paper + cardboard
Transcript
Hello world! Welcome back to microbit series. I am Alina
and today we will make a cute sheep like this.
We had learned how to put on the buzzer in the previous video
to program music, in this video, we will try to add
another component which is: push button.
Before we begin, prepare all the project materials first: cardboard,
buzzer, 2 crocodile clips and microbit board.
We start off by building the body of the sheep and then insert
the buzzer to program our preferred music. The steps
for circuit construction and programming are similar to the previous video.
There are 2 in-built push buttons on
your microbit board.
We will program microbit to play the music when the button
is pressed. We will use the "Input" block.
In the MakeCode software, select "On button A pressed".
We can change the button to be controlled such as button A,
B or button A and B.
Put in the music block "Wawawawa".
Start the melody
Wawawawa
This programming arrangement means, when the button A is pressed,
the music wawawawa will be played.
This type of programming is known as
event based programming
which means, program that is triggered by an event.
Pressing button A is the event that triggers music.
What if we want to play the music happy
birthday when the button B is pressed? Discuss
it with your teacher and friends! Now, try
to program your microbit to play the song Baa Baa Black Sheep
or Mary Had a Little Lamb
when one of the buttons is pressed. We can also use
music as an event to trigger another event.
Use the block music on melody note play. Icon
heart is displayed when the music is played. Connect
the microbit to the computer using a USB cable.
Press download on the software and save the programming file
into the microbit that is connected just now and observe what
will happen. Tidy up your project and try to arrange
the wires and microbit board so that they are not seen from the front.
Project sheep is now completed! Your next challenge before proceeding to the
next episode is:
try to use music as an event trigger.
Music can trigger icon or message to be
displayed or light up the external LED.
Happy trying!
and today we will make a cute sheep like this.
We had learned how to put on the buzzer in the previous video
to program music, in this video, we will try to add
another component which is: push button.
Before we begin, prepare all the project materials first: cardboard,
buzzer, 2 crocodile clips and microbit board.
We start off by building the body of the sheep and then insert
the buzzer to program our preferred music. The steps
for circuit construction and programming are similar to the previous video.
There are 2 in-built push buttons on
your microbit board.
We will program microbit to play the music when the button
is pressed. We will use the "Input" block.
In the MakeCode software, select "On button A pressed".
We can change the button to be controlled such as button A,
B or button A and B.
Put in the music block "Wawawawa".
Start the melody
Wawawawa
This programming arrangement means, when the button A is pressed,
the music wawawawa will be played.
This type of programming is known as
event based programming
which means, program that is triggered by an event.
Pressing button A is the event that triggers music.
What if we want to play the music happy
birthday when the button B is pressed? Discuss
it with your teacher and friends! Now, try
to program your microbit to play the song Baa Baa Black Sheep
or Mary Had a Little Lamb
when one of the buttons is pressed. We can also use
music as an event to trigger another event.
Use the block music on melody note play. Icon
heart is displayed when the music is played. Connect
the microbit to the computer using a USB cable.
Press download on the software and save the programming file
into the microbit that is connected just now and observe what
will happen. Tidy up your project and try to arrange
the wires and microbit board so that they are not seen from the front.
Project sheep is now completed! Your next challenge before proceeding to the
next episode is:
try to use music as an event trigger.
Music can trigger icon or message to be
displayed or light up the external LED.
Happy trying!
"Baa, Baa, Black Sheep" Music Note
C C G G
Baa, baa, black sheep
A A A-A G
Have you any wool?
F F E E
Yes sir, yes sir
D D C
Three bags full!
G G G F - F
One for the master
E E E D
One for the dame
C G G G F-F F
And one for the little boy
F E E E D
Who lives down the lane!
"Mary had a little lamb" Music Note
A - G F G A-A A
Mary had a little lamb
G - G G A-^C ^C
Little lamb, little lamb
A - G F G A-A A
Mary had a little lamb
A G G A G F
Its fleece was white as snow
F A - G - F G A - A A
And everywhere that Mary went
G - G G A-^C ^C
Mary went, Mary went
A - G - F G A-A A
Everywhere that Mary went
A G G A G F
The lamb was sure to go!
After watching the video, it's time to try it yourself! Complete the challenges below:
After watching the video, it's time to try it yourself! Complete the challenges below:
Play the music “wa wa wa wa” when the A button is pressed.
Play the song “Baa, Baa, Black Sheep” or “Mary had a little lamb” when one of the buttons is pressed.
Use music as an event trigger. Music can trigger icons or messages to be displayed or light up LEDs in external circuits.
👉CLICK HERE👈 to try it on makecode.
Practice in the Video
Practice in the Video
Ways to build the code.
End product.
Read the lesson notes below for further understanding.
Read the lesson notes below for further understanding.
Programming Tips
Programming Tips
The gif on the side shows how to copy program blocks.
Advanced Challenges
Advanced Challenges
Time to test your creativity!
Time to test your creativity!
Classroom exhibition
Combine Challenge 1 (play the full song) with Challenge 2 (use music as an event trigger).
Use your creativity to make an exciting project that includes both!
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