Minor fixes to guitar demo
This commit is contained in:
Richard Knoll
parent
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commit
aea09c1830
@ -1,10 +1,10 @@
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# Guitar
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### @description A beginner-intermediate maker activity, building a guitar with the micro:bit
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### @description A beginner-intermediate maker activity, building a guitar with the micro:bit
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### ~avatar avatar
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Make a micro:bit guitar with this guided tutorial!
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Make a micro:bit guitar with this guided tutorial!
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### ~
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*playing micro:bit guitar*
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@ -12,24 +12,24 @@ https://youtu.be/GYmdTFvxz80
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## Duration
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5 Activities, approx 30-45 min each based on familiarity with the coding concepts
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5 Activities, approx 30-45 min each based on familiarity with the coding concepts
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## Materials
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* Cardboard large pieces (recycle!)
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* Tape (masking, duct Tape, and/or packing tape)
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* Tape (masking, duct tape, and/or packing tape)
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* Markers and/or paint
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* Aluminum Foil
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* Scissors that can cut cardboard
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* Scissors that can cut cardboard
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* 1 micro:bit, battery holder and 2 AAA batteries
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* 4-5 Crocodile clips
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* Headphones
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## Activities
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* [Making the Guitar Body](/projects/guitar/making)
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* [Buttons, Display & Sound](/projects/guitar/displaybuttons)
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* [Light Sensor Tone control](/projects/guitar/lightsensor)
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* [Accelerometer Beat control](/projects/guitar/accelerometer)
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* [Pin Press Switch](/projects/guitar/pinpress)
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* [Making the Guitar Body](/projects/guitar/making)
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* [Buttons, Display & Sound](/projects/guitar/displaybuttons)
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* [Light Sensor Tone control](/projects/guitar/lightsensor)
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* [Accelerometer Beat control](/projects/guitar/accelerometer)
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* [Pin Press Switch](/projects/guitar/pinpress)
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### ~button /projects/guitar/making
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Let's get started!
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@ -2,7 +2,7 @@
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### @description micro:bit guitar: using buttons with display and sound
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### ~avatar avatar
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Use Button Events to control LED Display and play Sound
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Use Button Events to control LED Display and play Sound
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* **Concepts:**
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* Events
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* Tone/Note
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@ -42,8 +42,8 @@ music.rest(music.beat(BeatFraction.Whole))
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music.beat(BeatFraction.Quarter)
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```
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## Step 1: Make a Smiley
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Open [codethemicrobit.com](https://codethemicrobit.com) in your web browser
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## Step 1: Make a Smiley
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Open [codethemicrobit.com](https://codethemicrobit.com) in your web browser
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```blocks
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basic.showLeds(`
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. # . # .
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@ -53,14 +53,14 @@ Open [codethemicrobit.com](https://codethemicrobit.com) in your web browser
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. # # # .
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`);
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```
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From **Basics**, drag a **show LEDs** block into the coding area
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* Create a face with LEDs
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From **Basics**, drag a **show LEDs** block into the coding area
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* Create a face with LEDs
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Connect your micro:bit to your computer via USB and click **`Download`**.
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Follow the instructions to move the code to your micro:bit.
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Connect your micro:bit to your computer via USB and click **`Download`**.
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Follow the instructions to move the code to your micro:bit.
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## Step 2: Add Smiley LED Button Events
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## Step 2: Add Smiley LED Button Events
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```blocks
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input.onButtonPressed(Button.A, () => {
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basic.showLeds(`
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@ -82,36 +82,36 @@ input.onButtonPressed(Button.B, () => {
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})
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```
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From **Input**, drag an **on button 'A' pressed** block into the coding area
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From **Input**, drag an **on button 'A' pressed** block into the coding area
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* Snap the LED face into the block
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* Snap the LED face into the block
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* Create a 'B' button block with a different LED face
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* Create a 'B' button block with a different LED face
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* Download the code to your micro:bit and try the A & B buttons
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* Download the code to your micro:bit and try the A & B buttons
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## Step 3: Add Headphone Speakers using Crocodile clips
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Connect **GND** to the **base of the headphone jack** using a second crocodile clip (usually black)
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Connect **GND** to the **base of the headphone jack** using a second crocodile clip (usually black)
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Connect **pin 0** to the **tip of the headphone jack** with a crocodile clip
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Connect **pin 0** to the **tip of the headphone jack** with a crocodile clip
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*attaching batteries and micro:bit*
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https://youtu.be/zwRTmpKIaVU
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Attach the micro:bit & battery-pack to the guitar body
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*attaching batteries and micro:bit*
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https://youtu.be/zwRTmpKIaVU
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Attach the micro:bit & battery-pack to the guitar body
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*connecting headphone speaker*
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https://youtu.be/ewyEW_U5G9M
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Connect the headphones with crocodile clips
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*connecting headphone speaker*
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https://youtu.be/ewyEW_U5G9M
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Connect the headphones with crocodile clips
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### ~hint
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## The micro:bit can play music
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The **play tone** block allows a range letter note tones from **C** to **B5**.
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The **play tone** block allows a range letter note tones from **C** to **B5**.
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Songs are played using sequences notes. Like the beginning of a birthday song (C, C, D, C, F, E).
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```blocks
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input.onButtonPressed(Button.A, () => {
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@ -152,20 +152,20 @@ input.onButtonPressed(Button.B, () => {
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`)
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music.playTone(Note.G, music.beat(BeatFraction.Whole))
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})
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```
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From **Music**, drag **play tone *C* for *1* beat** block under the **show leds** in **Button A Pressed**
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```
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From **Music**, drag **play tone *C* for *1* beat** block under the **show leds** in **Button A Pressed**
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* modify **tone** by choosing a note (*letter*) and experiment with high and low pitches
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* set **beat** to 1
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**Repeat** for **Button B** event
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**Download the code** to the micro:bit
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* modify **tone** by choosing a note (*letter*) and experiment with high and low pitches
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* set **beat** to 1
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**Repeat** for **Button B** event
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**Download the code** to the micro:bit
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**Try the A & B buttons** with headphones and power connected
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## Congratulations on completing the basic guitar!
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**Challenge:** Create Samples of longer music to play for each button instead of the single tone
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## Congratulations on completing the basic guitar!
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**Challenge:** Create samples of longer music to play for each button instead of the single tone
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* *Tip*: Search for "ABC music notation" or "Easy Music Notes" + the name of a song
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## Extra
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@ -4,7 +4,7 @@
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### ~avatar avatar
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Use the Light Sensor to the control tone for this [Theremin](https://en.wikipedia.org/wiki/Theremin) inspired guitar
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Use the Light Sensor to the control tone for this [Theremin](https://en.wikipedia.org/wiki/Theremin) inspired guitar
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* **Concepts:**
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* Inputs
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@ -12,19 +12,19 @@ Use the Light Sensor to the control tone for this [Theremin](https://en.wikiped
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* Tone/Frequency
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* Ratio Mapping
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* Forever Loop
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* Math (multiplication) with code properties
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### ~
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* Math (multiplication) with code properties
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### ~
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## Duration: 30 - 45 minutes
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*playing tones with light sensor*
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## Duration: 30 - 45 minutes
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*playing tones with light sensor*
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https://youtu.be/2cKg9pokVC4
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## The micro:bit LEDs Light Sensors
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## The micro:bit LEDs Light Sensors
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- the micro:bit can detect external light level intensity reaching the LEDs
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- the micro:bit can detect external light level intensity reaching the LEDs
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- the light level block reports a reading of values 0 (*dark*) to 255 (*bright*)
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- a **Forever Loop** is required to continually use measure the current light level to control the tone
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- a **Forever Loop** is required to continually measure the current light level and control the tone
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## Forever Loop
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@ -46,70 +46,70 @@ basic.forever(() => {
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})
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```
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**Build the blocks**
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* From **Basic** drag a **forever loop** block into the coding area
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* From **Led** drag a **plot bar graph** block into the **forever loop**
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* From **Input** drag a **light level** block into **plot bar graph *of***
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**Set the *plot bar graph* value *up to* = *255* **
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* From **Basic** drag a **forever loop** block into the coding area
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* From **Led** drag a **plot bar graph** block into the **forever loop**
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* From **Input** drag a **light level** block into **plot bar graph *of***
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## Step 2: Test the light required to move the bar graph height
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**Set the *plot bar graph* value *up to* = *255* **
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*graphing light input*
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https://youtu.be/pqU7bTcfQ_s
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Experiment to see the effect on graph height when the **plot bar graph** value ***up to*** is changed
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## Step 2: Test the light required to move the bar graph height
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**255 is the maximum light input reading**, try numbers smaller than 255
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**Find a value** that allows the graph to show 1 - 5 bars
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*graphing light input*
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https://youtu.be/pqU7bTcfQ_s
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Experiment to see the effect on graph height when the **plot bar graph** value ***up to*** is changed
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**255 is the maximum light input reading**, try numbers smaller than 255
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**Find a value** that allows the graph to show 1 - 5 bars
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### ~hint
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### Frequency
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**Frequency** measured in Hz which are cycles per second or vibrations per second
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* A healthy human ear can detect frequencies in the range of 20Hz to 20,000Hz.
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* The micro:bit + headphones reliably produce detectable output ~50Hz - 6,000Hz.
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### Frequency
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**Frequency** measured in Hz which are cycles per second or vibrations per second
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* A healthy human ear can detect frequencies in the range of 20Hz to 20,000Hz.
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* The micro:bit + headphones reliably produce detectable output ~50Hz - 6,000Hz.
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**261Hz** represents a C note
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```blocks
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music.playTone(261, music.beat(BeatFraction.Half))
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```
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**play tone** blocks can specify a specific numeric **Frequency**
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by replacing the letter note 261Hz represents a **C** note with a **number** block
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**play tone** blocks can specify a numeric **Frequency**
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by replacing the letter **C** note with a **number** block that has the value it represents
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```blocks
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music.playTone(261, music.beat(BeatFraction.Half))
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```
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### ~
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### ~
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## Step 3: Multiply Frequency using Math blocks
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```blocks
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input.onButtonPressed(Button.A, () => {
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music.playTone(261 * 2, music.beat(BeatFraction.Half))
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})
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```
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create a **play tone** block using a **Math** section, **multiplication** block to set *tone*
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```
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Create a **play tone** block using a **Math** section, **multiplication** block to set *tone*
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### Next
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**Add** a **B** button block that multiplies the **261** tone by a number other than 2 to set tone
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**Download the code to the micro:bit**
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### Next
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**Add** a **B** button block that multiplies the **261** tone by a number other than 2 to set tone
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**Download the code to the micro:bit**
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**Test the sound for multiples of the 261Hz *C* frequency**
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**Test the sound for multiples of the 261Hz *C* frequency**
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## Step 4: Control the Frequency with the light input
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```blocks
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basic.forever(() => {
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music.playTone(input.lightLevel() * 25, music.beat(BeatFraction.Quarter))
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})
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```
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**Create a *forever loop* containing a *play tone* block**
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**Set *tone*, using *Math* multiplication block that multiplies *light level* input by 25**
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or experiment with multipliers larger and smaller than 25
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**Test light tone control on the guitar**
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Cover the LEDs with your hand to vary light detected to control the tone
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**Create a *forever loop* containing a *play tone* block**
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**Set *tone*, using *Math* multiplication block that multiplies *light level* input by 25**
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or experiment with multipliers larger and smaller than 25
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**Test light tone control on the guitar**
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Cover the LEDs with your hand to vary light detected to control the tone
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## Good work, this guitar is sounding good!
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**Challenge:** Create a variable for the light level multiplier that you can change using buttons (optional)
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**Challenge:** Create a variable for the light level multiplier that you can change using buttons (optional)
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### ~button /projects/guitar/accelerometer
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NEXT: Accelerometer Beat control
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### ~button /projects/guitar/accelerometer
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NEXT: Accelerometer Beat control
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### ~
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@ -1,5 +1,5 @@
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# Making the Guitar Body
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### @description Maker Project for Guitar Body for micro:bit
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### @description Maker Project for Guitar Body for micro:bit
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### ~avatar avatar
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@ -11,9 +11,9 @@ Make the Guitar Body for your micro:bit Guitar
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## Materials
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* Cardboard large pieces (recycle!)
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* Tape (masking, duct Tape, and/or packing tape)
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* Scissors that can cut cardboard
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* Markers and/or paint
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* Tape (masking, duct tape, and/or packing tape)
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* Scissors that can cut cardboard
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* Markers and/or paint
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@ -28,7 +28,7 @@ the shape of your guitar
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### ~hint
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* Avoid small details that are difficult to cut into cardboard
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* Unfolding a box gives longer pieces of cardboard, and creases can be reinforced
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* Unfolding a box gives longer pieces of cardboard and creases can be reinforced
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### ~
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@ -39,21 +39,21 @@ https://youtu.be/aUQkrFoEank
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## Step 3: Personalize the Guitar
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Create unique styling using tape, markers, paint and other available materials (*calling all artist!*)
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Create unique styles using tape, markers, paint and other available materials (*calling all artists!*)
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*decorating the guitar*
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https://youtu.be/zNAZTJeSxY8
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Everyone can come up with a unique design!
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Everyone can come up with a unique design!
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## Extra!
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*strengthening the guitar*
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*strengthening the guitar*
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https://youtu.be/q0GkQdJmxjE
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Strengthen the guitar next with an angled cardboard strip (*optional*).
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Strengthen the guitar next with an angled cardboard strip (*optional*).
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### ~button /projects/guitar/displaybuttons
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NEXT: Buttons, Display and Sound
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### ~
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@ -6,16 +6,16 @@
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Use pin press to switch guitar play on/off
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* Concepts:
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* Circuit
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* Conductor
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* Variable/Global-Variable
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* Conditional: **`if`**, **`else`**
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* Circuit
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* Conductor
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* Variable/Global-Variable
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* Conditional: **`if`**, **`else`**
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* Boolean: **`True`/`False`**
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### ~
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### ~
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## Duration: approximately 45 minutes
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## Duration: approximately 45 minutes
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## Materials:
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## Materials:
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2-3 Crocodile clips
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## Blocks
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@ -31,16 +31,16 @@ input.onPinPressed(TouchPin.P1, () => {})
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### ~hint
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## Circuits & Switches
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* **Circuits** need a power supply (battery), a resister (like a LED) & a conductor (metal, water, hand)
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* **Switches** turn electric power on by closing (completing) a circuit with a conductor so power can flow
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* **Circuits** need a power supply (battery), a resister (like a LED) & a conductor (metal, water, hand)
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* **Switches** turn electric power on by closing (completing) a circuit with a conductor so power can flow
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**Metal foil and wires make excellent conductors**
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**Metal foil and wires make excellent conductors**
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**In this activity we use YOU to conduct electricity**
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**to close the circuit that switches the guitar ON and OFF!**
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**In this activity we use YOU to conduct electricity**
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**to close the circuit that switches the guitar ON and OFF!**
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### ~
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## Step 1: Pin Press Test
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## Step 1: Pin Press Test
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```blocks
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input.onPinPressed(TouchPin.P0, () => {
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@ -52,34 +52,34 @@ input.onPinPressed(TouchPin.P1, () => {
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input.onPinPressed(TouchPin.P2, () => {
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basic.showNumber(2)
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})
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```
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**Create the pin-press code**
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```
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**Create the pin-press code**
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**Download the code** on the micro:bit
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**Download the code** on the micro:bit
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https://youtu.be/PAIU-vHqyGU
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https://youtu.be/PAIU-vHqyGU
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**Hold the micro:bit touching The GND pin with one hand**
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**with the other hand alternately touch the 0, 1 and 2 pins**
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**Hold the micro:bit touching The GND pin with one hand**
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**with the other hand alternately touch the 0, 1 and 2 pins**
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### ~hint
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**The electric signal traveled from pins, between your hands to `GND` and the micro:bit detected the electric signal!**
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### ~
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## Step 2: Installing conductive foil on the guitar
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https://youtu.be/NX0ECcpXFes
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**Add foil to the guitar body where it is easy to touch while playing**
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**The electric signal traveled from pins, between your hands to `GND` and the micro:bit detected the electric signal!**
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### ~
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**Connect the foil to `GND` using a crocodile clip**
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## Step 2: Installing conductive foil on the guitar
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https://youtu.be/NX0ECcpXFes
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**Add foil to the guitar body where it is easy to touch while playing**
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https://youtu.be/YkymZGNmkrE
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**Add foil to the guitar neck**
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**Connect the foil to `pin 1` using a crocodile clip**
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**Connect the foil to `GND` using a crocodile clip**
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## Step 3: Add a switch to turn the guitar ON and OFF
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**Using the `on` global variable we can switch the message on the micro:bit**
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**between ON and OFF**
|
||||
https://youtu.be/YkymZGNmkrE
|
||||
**Add foil to the guitar neck**
|
||||
|
||||
**Connect the foil to `pin 1` using a crocodile clip**
|
||||
|
||||
## Step 3: Add a switch to turn the guitar ON and OFF
|
||||
**Using the `on` global variable we can switch the message on the micro:bit**
|
||||
**between ON and OFF**
|
||||
```blocks
|
||||
let on = false
|
||||
basic.forever(() => {
|
||||
@ -96,11 +96,11 @@ input.onPinPressed(TouchPin.P1, () => {
|
||||
on = true
|
||||
}
|
||||
})
|
||||
```
|
||||
**Create the ON/OFF switch code**
|
||||
```
|
||||
**Create the ON/OFF switch code**
|
||||
|
||||
**Download the code on the micro:bit**
|
||||
|
||||
**Download the code on the micro:bit**
|
||||
|
||||
**Test by touching `P1` to toggle the LED message between ON and OFF**
|
||||
|
||||
*Final code*
|
||||
@ -123,9 +123,9 @@ basic.forever(() => {
|
||||
input.onPinPressed(TouchPin.P1, () => {
|
||||
on = !on;
|
||||
})
|
||||
```
|
||||
## Now Play!
|
||||
**Turn the guitar ON and OFF with a pin press on the connected foil**
|
||||
**touching both pieces of foil at the same time to connect the switches**
|
||||
|
||||
https://youtu.be/GYmdTFvxz80
|
||||
```
|
||||
## Now Play!
|
||||
**Turn the guitar ON and OFF with a pin press on the connected foil by**
|
||||
**touching both pieces of foil at the same time to connect the switches**
|
||||
|
||||
https://youtu.be/GYmdTFvxz80
|
||||
Loading…
Reference in New Issue
Block a user