Morse Chat
{Introducing Sky }
🐷 Meet Sky, the pig! Sky can only communicate using Morse code.
Luckily, you can use your micro:bit with sound to talk to Sky 👋
{Setup}
Let’s start by making a way to send Morse code messages.
~hint What is Morse code? 🤷🏽
Morse code is an alphabet composed of dots (short signals) and dashes (long signals). The message “Hi there!” is “…. .. - …. . .-. . -.-.–” in Morse code.
hint~
■ From the ||input:Input|| category in the toolbox, drag an ||input:on logo [pressed]|| container into to your workspace.
■ From the ||radio:Radio|| category, get ||radio:radio send number [0]|| and snap it into your empty ||input(noclick):on logo [pressed]|| container.
input.onLogoEvent(TouchButtonEvent.Pressed, function () {
radio.sendNumber(0)
}){Sending different messages pt. 1}
■ From ||input:Input||, grab another ||input:on logo [pressed]|| container and add it to your workspace.
💡 This container is greyed out because it matches another. Let’s change that!
■ On the greyed-out ||input(noclick):on logo [pressed]|| container, click on the pressed dropdown and set it to ||input(noclick):long pressed||.
// @highlight
input.onLogoEvent(TouchButtonEvent.LongPressed, function () {
})
input.onLogoEvent(TouchButtonEvent.Pressed, function () {
radio.sendNumber(0)
}){Sending different messages pt. 2}
■ From the ||radio:Radio|| category, get a ||radio:radio send number [0]|| block and snap it into your empty ||input(noclick):on logo [long pressed]|| container.
■ Set the number to be 1.
input.onLogoEvent(TouchButtonEvent.LongPressed, function () {
// @highlight
radio.sendNumber(1)
})
input.onLogoEvent(TouchButtonEvent.Pressed, function () {
radio.sendNumber(0)
}){Receiving different messages}
To ensure Sky gets the right message, we will use an if then / else conditional statement.
■ From ||radio:Radio||, find the ||radio:on radio received [receivedNumber]|| container and add it to your workspace.
■ From ||logic:Logic||, grab an ||logic:if <true> then / else|| statement and snap it into your new ||radio(noclick):on radio received [receivedNumber]|| container.
■ Go back to the ||logic:Logic|| category, grab ||logic:<[0] [=] [0]>||, and click it in to replace the ||logic(noclick):<true>|| argument in your ||logic(noclick):if <true> then / else|| statement.
radio.onReceivedNumber(function (receivedNumber) {
// @highlight
if (0 == 0) {
} else {
}
}){Conditioning on the input}
■ From your ||radio:on radio received [receivedNumber]|| container, grab the receivedNumber input and drag out a copy.
■ Use your copy of receivedNumber to replace the [0] on the left side of ||logic(noclick):<[0] [=] [0]>||.
radio.onReceivedNumber(function (receivedNumber) {
// @highlight
if (receivedNumber == 0) {
} else {
}
}){Displaying a message pt. 1}
■ We want to display a dash if the logo is long pressed. From ||basic:Basic||, grab ||basic:show leds|| and snap it into the empty bottom container of your ||logic(noclick):if then / else|| statement.
■ Turn on 3 LEDs in a row to be a dash: -
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
} else {
// @highlight
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
}
}){Playing a sound pt. 1}
■ From the ||music:Music|| category, grab a ||music:play tone [Middle C] for [1 beat] [until done]|| block and snap it at the end of the bottom container in your ||logic(noclick):if then / else|| statement.
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
} else {
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
// @highlight
music.play(music.tonePlayable(262, music.beat(BeatFraction.Whole)), music.PlaybackMode.UntilDone)
}
}){Displaying a message pt. 2}
■ We want to display a dot if the logo is pressed. From ||basic:Basic||, grab another ||basic:show leds|| and snap it into the top container of your ||logic(noclick):if then / else|| statement.
■ Turn on a single LED to make a dot: .
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
// @highlight
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
} else {
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Whole)), music.PlaybackMode.UntilDone)
}
}){Playing a sound pt. 2}
■ From the ||music:Music|| category, grab ||music:play tone [Middle C] for [1 beat] [until done]|| and snap it in at the end of the top container in your ||logic(noclick):if then / else|| statement.
■ Dots are shorter than dashes! Set the tone to play for 1/4 beat.
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
// @highlight
music.play(music.tonePlayable(262, music.beat(BeatFraction.Quarter)), music.PlaybackMode.UntilDone)
} else {
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Whole)), music.PlaybackMode.UntilDone)
}
}){Clearing the screens}
■ From ||basic:Basic||, find ||basic:clear screen|| and snap it in at the very bottom of your ||radio(noclick):on radio received [receivedNumber]|| container.
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Quarter)), music.PlaybackMode.UntilDone)
} else {
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Whole)), music.PlaybackMode.UntilDone)
}
// @highlight
basic.clearScreen()
}){Testing in the simulator - Connect!}
Test what you’ve created. Remember to turn your sound on!
■ Touch the gold micro:bit logo at the top of your micro:bit on the simulator. You’ll notice that a second micro:bit appears. This is the micro:bit for Sky 🐖
💡 If your screen is too small, you might not be able to see it.
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Quarter)), music.PlaybackMode.UntilDone)
} else {
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Whole)), music.PlaybackMode.UntilDone)
}
basic.clearScreen()
})
input.onLogoEvent(TouchButtonEvent.LongPressed, function () {
radio.sendNumber(1)
})
input.onLogoEvent(TouchButtonEvent.Pressed, function () {
radio.sendNumber(0)
}){Testing in the simulator - Send message}
■ Touch the logo again to send messages to Sky 🐖
Press to send a dot.
Long press (count to 3!) to send a dash.
■ If you have multiple micro:bits with sound (they have shiny gold logos at the top), download this code and try it out!
radio.onReceivedNumber(function (receivedNumber) {
if (receivedNumber == 0) {
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Quarter)), music.PlaybackMode.UntilDone)
} else {
basic.showLeds(`
. . . . .
. . . . .
. # # # .
. . . . .
. . . . .
`)
music.play(music.tonePlayable(262, music.beat(BeatFraction.Whole)), music.PlaybackMode.UntilDone)
}
basic.clearScreen()
})
input.onLogoEvent(TouchButtonEvent.LongPressed, function () {
radio.sendNumber(1)
})
input.onLogoEvent(TouchButtonEvent.Pressed, function () {
radio.sendNumber(0)
})