Merge branch 'origin/docs'

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Peli de Halleux 2016-06-01 20:54:57 -07:00
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## Science ## Science
* [Charting](/lessons/charting), measure and chart acceleration * [Charting](/lessons/charting), measure and chart acceleration
* [Seismograph](/lessons/seismograph), create a seismograph with household items
## Advanced ## Advanced
* [Prank WiFi](/lessons/prank-wifi), create fake WiFi to trick your friends * [Prank WiFi](/lessons/prank-wifi), create fake WiFi to trick your friends

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# beautiful image blocks challenges
Beautiful Image tutorial.
### ~avatar avatar
### @video td/videos/beautiful-image-0
Rebuild the game!
The blocks have been shuffled! Put them back together so that…
* display images on the screen with show LEDs
```shuffle
basic.showLeds(`
# # # # #
# # . # #
# . # . #
# # . # #
# # # # #
`)
basic.showLeds(`
# . # . #
. # # # .
. . # . .
. # # # .
# . # . #
`)
basic.pause(100)
```
Hints and tips
Cut out these documentation cards to help you!
```cards
basic.showLeds(`
. . . . .
. . . . .
. . # . .
. . . . .
. . . . .
`)
basic.pause(100)
```

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@ -7,7 +7,7 @@ Create a charting app for simulating and measuring the acceleration applied to t
Acceleration Acceleration
## Quick Links ## Quick Links
* [activity](/lessons/charting/acceleration) * [activity](/lessons/charting/activity)
* [challenge](/lessons/charting/challenge) * [challenge](/lessons/charting/challenge)
* [quiz](/lessons/charting/quiz) * [quiz](/lessons/charting/quiz)
* [answers](/lessons/charting/quiz-answers) * [answers](/lessons/charting/quiz-answers)

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@ -79,7 +79,7 @@ Tip: If you dont see a chart type that you want, click the All Charts tab to
### ~avatar avatar ### ~avatar avatar
Excellent, you're ready to continue with the [challenges](/lessons/charting/acceleration-challenge) Excellent, you're ready to continue with the [challenges](/lessons/charting/challenge)
### ~ ### ~

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# lucky 7 blocks challenges
Coding challenges for lucky 7.
###~ Avatar
### @video td/videos/lucky-7-1-2
### Rebuild the game!
The blocks have been shuffled! Put them back together so that…
* The blocks should be multiples of 7 and a pause between the numbers
```shuffle
basic.showNumber(7)
basic.pause(500)
basic.showNumber(14)
```
### Hints and tips
Cut out these documentation cards to help you!
```cards
basic.showNumber()
basic.pause()
```
* Run the code to see if it works as expected.

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@ -4,7 +4,7 @@ Coding challenges for screen wipe.
## Before we get started ## Before we get started
Complete the [screen wipe](/lessons/screen-wipe) activity and your code will look like this: Complete the [screen wipe](/lessons/screen-wipe/activity) activity and your code will look like this:
```blocks ```blocks
basic.showLeds(` basic.showLeds(`

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@ -9,7 +9,7 @@ Acceleration & Analog Read Pin
## Quick Links ## Quick Links
* [activity](/lessons/seismograph/activity) * [activity](/lessons/seismograph/activity)
* [challenge](/lessons/seismograph/challenges) * [challenge](/lessons/seismograph/challenge)
## Prior learning/place of lesson in scheme of work ## Prior learning/place of lesson in scheme of work
@ -19,10 +19,11 @@ Learn how to **show LEDs** to turn on a LED light pattern on the LED screen. We
```cards ```cards
basic.forever(() => { basic.forever(() => {
radio.sendNumber(input.acceleration(Dimension.Strength) - 1023);
});
radio.onDataReceived(() => {
led.plotBarGraph(radio.receiveNumber(), 0);
}); });
led.plotBarGraph(input.acceleration(Dimension.Strength) - 1023, 0);
led.plotBarGraph(pins.analogReadPin(AnalogPin.P0), 0);
``` ```
## Objectives ## Objectives

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# Seismograph Activity # Seismograph Activity
Welcome! In this project, you will build your own seismograph. This activity will teach how to use the micro:bit to chart the strength of the acceleration. Let's get started! Project duration: 25 minutes.
### ~avatar avatar ### ~avatar avatar
In this project, you will build your own seismograph. Engineering: In this project, you will build your own seismograph micro:bit from tape and a household plate.
### ~
## What you'll need: ## What you'll need:
* micro:bit * BBC micro:bit
* USB cable * micro USB cable
* Plate
* Tape
* Scissors * Scissors
* Glue gun
* String
* Cup (Plastic or Paper)
* Magnet
Welcome! This activity will teach how to use the micro:bit to chart the strength of the acceleration. Let's get started! ![](/static/mb/lessons/seismograph11.png)
1. Setup Cup: Use scissors to cut a usable window on the cup, which will be a square sized hole at the lid side of the cup. Use scissors to create a small hole in the center of the base of the cup. # Engineering Steps
2. Fasten Magnet: Fasten end of the string to the magnet with glue ## 1.
3. Secure String: Fasten string to base of the cup and hang the remaining string outside the base of the cup. Prepare Tape: Measure and cut approximately 10mm of tape. The tape will be fastened to a micro USB cable.
![](/static/mb/lessons/seismograph1.png)
## 2.
Fasten Tape: Fasten tape to the micro USB cable and to the plate. Attach the micro:bit to the micro:bit USB cable.
![](/static/mb/lessons/seismograph0.png)
### ~avatar avatar ### ~avatar avatar
Seismograph built, let's code! Computer Science: The seismograph has been built. We are ready to program the micro:bit to be a seismograph!
### ~ ### ~
4. Go to Codemicrobit.com # Computer Science Steps
Click or tap Create Code ## 3.
Click or tap Block Editor
### ~ Go to Codemicrobit.com
5. * Click or tap New Project
* Click or tap Blocks
We will measure `acceleration (mg)` in terms of strength. Get the acceleration value (milli g-force), as measured in strength. ## 4.
We will measure `acceleration (mg)` in terms of strength or Magnitude. Get the acceleration value (milli g-force), as measured in strength or Magnitude.
```blocks ```blocks
input.acceleration(Dimension.Strength); input.acceleration(Dimension.Strength);
``` ```
### ~ ## 5.
6. Use the plot bar chart to visualize the acceleration on the LED screen of the micro:bit in the specified range. You implement forever and plot Bar Graph to constantly display a vertical bar graph, which will be based on the "value" and "high" value. Then measure the acceleration based on the strength or Magnitude.
Use the plot bar chart to visualize the acceleration on the LED screen of the micro:bit in the specified range. You implement plot Bar Graph to display a vertical bar graph based on the "value" and "high" value. Then you must insert acceleration in based on strength.
```blocks ```blocks
basic.forever(() => { basic.forever(() => {
@ -56,9 +66,7 @@ basic.forever(() => {
``` ```
### ~ ## 6.
7.
Finally, we subtract the gravity from acceleration strength. Finally, we subtract the gravity from acceleration strength.
@ -71,76 +79,113 @@ basic.forever(() => {
### ~ ### ~
8. ### ~avatar avatar
Notice that making vibrating the object below the micro:bit changes the values and the line appears as a wave to display the value of the strength as measured in milli-gravities. By making the object below the micro:bit vibrate, you will observe changing values of the micro:bit. Also, the LEDs shown on the Bar Graph fluctates based on the movement of the micro:bit strength.
NOTE: The black color reflects the micro:bit device.
![](/static/mb/data4.png)
Science: We now need to use the micro:bit to Analyze Data and chart for the strength of the acceleration.
### ~ ### ~
9. # Science Steps
Vigorously move the micro:bit in the micro:bit simulatator by moving the micro:bit image from side to side. Every time the micro:bit moves in the x direction in the simulator, you are generating data points that can be reviewed in Excel. The more attempts to move the micro:bit from side to side, the more data being saved in Excel. After you have vigarously moved the micro:bit simulator from side to side for a sufficient amount of time, you are ready to graph or chart the accceleration of the micro:bit. We want a printout of our acceleration on Excel that can be graphed in Excel. ## 7.
First, notice that moving the micro:bit in the simulator in any direction, you will change the acceleration value, which is being displayed as the same color as the micro:bit simulator. Also, notice that by moving the micro:bit simulator, there is a changing acceleration value. Second, the flat colored horizontal line will start a waving line to display the value of the strength as measured in milli-gravities. Finally, notice that the LED display will fluctate based on the movement of the micro:bit simulator.
![](/static/mb/lessons/analyze20.png)
## 8.
Connect a micro:bit to your computer using your USB cable
![](/static/mb/lessons/seismograph33.png)
Click or tap the compile button for the seismograph program to run the program on the micro:bit.
![](/static/mb/lessons/seismograph22.png)
## 9.
A black line should appear directly beneath the colored line. The black line measures the micro:bit acceleration. And the colored line measures micro:bit simulator acceleration.
Run the acceleration experiment by vigarously moving the plate in any direction or move the object below the micro:bit (such as a table).
Every time the micro:bit moves in any direction, you generate data points that can be reviewed in Excel later. The more attempts to move the micro:bit, the more data to be reviewed in Excel.
![](/static/mb/lessons/seismograph5.png)
## 10.
Please find seismogrph experiment obervations:
First, notice that moving the micro:bit in any direction, you will change the acceleration value, which is being displayed as a milli-gravities value. By moving the micro:bit, there will be a changing acceleration value.
![](/static/mb/lessons/seismograph7.png)
Second, the horizontal line will move to plot the value of the strength as measured in milli-gravities. The horizontal line's movement is based on the micro:bit acceleration in Magnitude or Strength.
![](/static/mb/lessons/seismograph6.png)
Third, notice that the LED display fluctates based on the movement of the micro:bit.
![](/static/mb/lessons/seismograph8.png)
Now we are ready to graph or chart the accceleration of the micro:bit. We want a printout of the micro:bit acceleration graphed in Excel.
## 11.
In order to receive the the data plotted by Excel, click or tap anywhere in the on the chart data.
![](/static/mb/analyze1.png)
## 12.
You have two options to Analyze Data:
* Local File: Save the data to your local Downloads folder and open it in Excel.
* Stream to Cloud: Upload your data to Microsoft Azure to analyze it.
Click or tap Download data
![](/static/mb/seismograph9.png)
## 13.
A CSV file will be generated to display the data points collected by the micro:bit. Click or tap on the data Excel file that was downloaded to your local Downloads Folder.
![](/static/mb/lessons/analyze9.png)
## 14.
Select the data that you want to include in your chart. The chart should include the first two columns: time and acceleration.
Click or tap on the first two columns (A, B) to include time and acceleration data from the micro:bit
### ~ ## 15.
10. Click or tap on Insert then select Recommended Charts. We can select a chart thats just right for the data.
We want to chart the data collected by using a tool in Excel. ![](/static/mb/analyze3.png)
The final part of this experiment is opening and reviewing the data in the Excel CSV file. Simply click on the line beneath the simulator. A CSV file will be generated to display the data points collected by moving the micro:bit in the X direction. Then click or tap on the data Excel file that was downloaded to your local Downloads Folder. On the Recommended Charts tab, scroll through the list of chart types that Excel recommends for your data.
We want to select the chart called Line. A line chart is used to display trends over time. We will use the line chart because there are many data points over time.
### ~ Click on the chart type to see how your data will look in that format. When you find the chart type that you want, click it, and then click OK.
10. ![](/static/mb/lessons/analyze16.png)
Tip: If you dont see the line chart, click the All Charts tab to see the line chart.
First, click or tap on the first two columns (A, B) to include the time of the data being collected; b) the results of acceleration data on the micro:bit ## 16.
![](/static/mb/data7.png) Use the Chart Elements, Chart Styles, and Chart Filters buttons next to the upper-right corner of the chart to add chart elements like axis titles or data labels, to customize the look of your chart
Use the Recommended Charts command on the Insert tab to quickly create a chart thats just right for your data. Alternatively, click or tap on the Design Ribbon.
* Select the data that you want to include in your chart. Let's select Style 10 as an example.
* Click Insert > Recommended Charts. ![](/static/mb/lessons/analyze19.png)
### ~
11.
![](/static/mb/chart1.png)
* On the Recommended Charts tab, scroll through the list of chart types that Excel recommends for your data.
Click any chart type to see how your data will look in that format.
When you find the chart type that you want, click it, and then click OK. We want to select the chart called Line. A line chart is used to display trends over time. We will use the line chart because there are many data points over time.
Tip: If you dont see a chart type that you want, click the All Charts tab to see all of the available chart types.
### ~
12.
![](/static/mb/chart_title.png)
* Use the Chart Elements, Chart Styles, and Chart Filters buttons next to the upper-right corner of the chart to add chart elements like axis titles or data labels, to customize the look of your chart
### ~
13.
![](/static/mb/elements_styles_filters.png)
* Connect a micro:bit to your computer using your USB cable; compile; and repeat this experiment by vibrating the micro:bit. Then chart the data on Excel.
### ~avatar avatar ### ~avatar avatar

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# Challenge # Seismograph Challenge
Coding challenges for the seismograph.
### ~avatar avatar ### ~avatar avatar
Welcome! The activity will teach you how to use the acceleration of the 1st micro:bit and to visualize the acceleration on the 2nd micro:bit. Let's get started! Engineering: In this project, you will build a remote control based on the seismograph micro:bit activity using a second micro:bit and micro USB cable.
### ~ ### ~
Let's measure `acceleration (mg)` and then `send number`. `Acceleration` is measured in **milli-gravities**, so a value of -1000 is equivalent to -1g or -9.81m/s^2. We will be able to get the acceleration value (g-force), in the specified "x" dimension. `Send number` will broadcast a number data packet to other micro:bits connected via radio.
```blocks ## What you'll need:
radio.sendNumber(input.acceleration(Dimension.X));
``` * BBC micro:bits (2)
### ~ * micro USB cables (2)
We want to display the acceleration forever. In order to do so, we need a `forever` loop. A forever loop will repeat code in the background forever. * Plate
* Tape
* Scissors
![](/static/mb/lessons/seis_challenge01.png)
## Before we get started
Complete the [seismograph](/lessons/seismograph/activity) activity and your code will look like this:
```blocks ```blocks
basic.forever(() => { basic.forever(() => {
radio.sendNumber(input.acceleration(Dimension.X)); led.plotBarGraph(input.acceleration(Dimension.Strength) - 1023, 0);
}); });
```
### ~avatar avatar
Computer Science: Welcome! The activity will teach you how to code the acceleration of the 1st micro:bit and to visualize the acceleration on the 2nd micro:bit. Let's get started!
### ~
# Computer Science Steps
## 1.
We want to simply detach the blocks from the recent activity. We will use blocks from the activity to create a brand new program to show the way micro:bit devices communicate through the BLE (Bluetooth low energy) radio.
```shuffle
basic.forever(() => {
led.plotBarGraph(input.acceleration(Dimension.Strength) - 1023, 0);
});
``` ```
### ~
We want to register code to run when a packet is received over radio. We can implement this code by adding `on data received`. ## 2.
Let's measure `acceleration (mg)` and then `send number`. `Acceleration` is measured in **milli-gravities**, so a value of -1000 is equivalent to -1g or -9.81m/s^2. We will be able to get the acceleration value (g-force), in the specified "x" dimension. `Send number` will broadcast a number data packet to other micro:bits connected via radio.
We need add send number block found in the Radio drawer. We will attach send number to acceleration and subtract the gravity from acceleration strength.
Your finished code will look like this:
```blocks
radio.sendNumber(input.acceleration(Dimension.Strength) - 1023);
```
## 3.
We want to display the acceleration forever. In order to do so, we need a `forever` loop. A forever loop will repeat code in the background forever. We need attach forever loop to send number.
Your finished code will look like this:
```blocks ```blocks
basic.forever(() => { basic.forever(() => {
radio.sendNumber(input.acceleration(Dimension.X)) radio.sendNumber(input.acceleration(Dimension.Strength) - 1023);
}) });
radio.onDataReceived(() => {
})
``` ```
### ~
## 4.
We want to register code to run when a packet is received over radio. We can implement this code by adding `on data received`block found in the radio drawer.
Your finished code will look like this:
```blocks
basic.forever(() => {
radio.sendNumber(input.acceleration(Dimension.Strength) - 1023);
});
radio.onDataReceived(() => {
});
```
## 5.
Finally, we want to chart the acceleration. So we must first implement `plot bar graph`. `Plot Bar Graph` will display a vertical bar graph based on the value and high value. In order to transfer the receive the number from the 1st micro:bit, we must implement `receive number` to constantly display a vertical bar graph based on the value. Remember, the value will equal to the micro:bit's acceleration in the "x" direction. Finally, we want to chart the acceleration. So we must first implement `plot bar graph`. `Plot Bar Graph` will display a vertical bar graph based on the value and high value. In order to transfer the receive the number from the 1st micro:bit, we must implement `receive number` to constantly display a vertical bar graph based on the value. Remember, the value will equal to the micro:bit's acceleration in the "x" direction.
Your finished code will look like this:
```blocks ```blocks
basic.forever(() => { basic.forever(() => {
radio.sendNumber(input.acceleration(Dimension.X)) radio.sendNumber(input.acceleration(Dimension.Strength) - 1023);
}) });
radio.onDataReceived(() => { radio.onDataReceived(() => {
led.plotBarGraph(radio.receiveNumber(), 1023) led.plotBarGraph(radio.receiveNumber(), 0);
}) });
``` ```
### ~
Notice that moving the micro:bit the farthest direction in the x direction will be -1023 on the charting beneath the simulator. The second observation will be that the LEDs will be full brightness on the 2nd micro:bit. There is a single LED turned on with the 1st micro:bit. Additionally, the graphs will reflect 0 acceleation for the 1st micro:bit. In this scenario, if you are adjusting the acceleration in the simualator, you are also changing your chart that will be produced.
![](/static/mb/acc.png) ### ~avatar avatar
Science: Welcome! The activity will teach you how to chart the acceleration of the 1st micro:bit and to visualize the acceleration on the 2nd micro:bit. Let's get started!
### ~
# Science Steps
## 6.
First, notice that moving the 1st micro:bit in the simulator in any direction, you will change the acceleration value of the 2nd micro:bit. Also, notice that by moving the micro:bit simulator, there is a changing acceleration value of the second micro:bit. Second, the flat colored horizontal line will start a waving line on the 2nd micro:bit to display the value of the strength as measured in milli-gravities. Finally, notice that the LED display will fluctate based on the movement of the 2nd micro:bit simulator.
![](/static/mb//lessons/seis_challenge02.png)
## 7.
Connect the 2nd micro:bit to your computer using your USB cable. We should have two micro:bit devices attached to the computer.
![](/static/mb/lessons/seismograph33.png)
## 8.
Click or tap the compile button for the seismograph program to run the program on the 1st micro:bit and 2nd micro:bit.
## 9.
The black lines should appear directly beneath the colored lines. The black lines measure the micro:bit acceleration. And the colored lines measures micro:bit simulator acceleration.
![](/static/mb/lessons/seis_challenge05.png)
Run the acceleration experiment by vigarously moving the plate in any direction or move the object below the micro:bit (such as a table).
![](/static/mb/lessons/seis_challenge06.png)
Every time the micro:bit moves in any direction, you generate data points that can be reviewed in Excel later. The more attempts to move the micro:bit, the more data to be reviewed in Excel. Notice that the LED on the 2nd micro:bit changes to communicate the movement of the 1st micro:bit.
![](/static/mb/lessons/seis_challenge04.png)
Now we are ready to graph or chart the accceleration of the micro:bit. We want a printout of the micro:bit acceleration graphed in Excel.
## 10.
In order to receive the the data plotted by Excel, click or tap anywhere in the on the chart data.
![](/static/mb/lessons/seis_challenge07.png)
## 11.
You have two options to Analyze Data:
* Local File: Save the data to your local Downloads folder and open it in Excel.
* Stream to Cloud: Upload your data to Microsoft Azure to analyze it.
Click or tap Download data
![](/static/mb/seismograph9.png)
## 12.
A CSV file will be generated to display the data points collected by the micro:bit. Click or tap on the data Excel file that was downloaded to your local Downloads Folder.
![](/static/mb/lessons/analyze9.png)
## 13.
Select the data that you want to include in your chart. The chart should include the first two columns: time and acceleration.
Click or tap on the first two columns (A, B) to include time and acceleration data from the micro:bit. We only need the first two columns (A, B) because the 2nd micro:bit changes have been communicated by the 1st micro:bit. So the data points of the seismograph are being recorded on the 1st micro:bit.
## 14.
Click or tap on Insert then select Recommended Charts. We can select a chart thats just right for the data.
![](/static/mb/analyze3.png)
On the Recommended Charts tab, scroll through the list of chart types that Excel recommends for your data.
We want to select the chart called Line. A line chart is used to display trends over time. We will use the line chart because there are many data points over time.
Click on the chart type to see how your data will look in that format. When you find the chart type that you want, click it, and then click OK.
![](/static/mb/lessons/analyze16.png)
Tip: If you dont see the line chart, click the All Charts tab to see the line chart.
## 15.
Use the Chart Elements, Chart Styles, and Chart Filters buttons next to the upper-right corner of the chart to add chart elements like axis titles or data labels, to customize the look of your chart
Alternatively, click or tap on the Design Ribbon.
Let's select Style 10 as an example.
![](/static/mb/lessons/analyze19.png)
### ~ ### ~
NOTE: The colors of the charts reflect the color of the micro:bit simulator. In this instance, the micro:bits are blue and green. So the colors of the line graphs reflect the colors of the micro:bit * Have fun reviewing your seismograph data and analyzing the acceleration with Excel.
* The first person and second person take shaking or moving the micor:bit in any direction while the other player charts the data on the micro:bit!
### ~
After running this simulatation several seconds by moving the micro:bit side to side in the x direction, you are ready to graph or chart the accceleration of the micro:bit. We want a printout of our acceleration on Excel. We will graph the fluctuating acceleration of the simulation experiment.
![](/static/mb/acc2.png)
### ~
Finally, you must open the Excel CSV file by clicking on the data.xls file that was downloaded to Downloads Folder.
![](/static/mb/data3.png)
Use the Recommended Charts command on the Insert tab to quickly create a chart thats just right for your data.
* Select the data that you want to include in your chart.
* Click Insert > Recommended Charts.
![](/static/mb/chart1.png)
* On the Recommended Charts tab, scroll through the list of chart types that Excel recommends for your data.
Click any chart type to see how your data will look in that format.
When you find the chart type that you want, click it, and then click OK. We want to select the chart called Line. A line chart is used to display trends over time. We will use the line chart because there are many data points over time.
Tip: If you dont see a chart type that you want, click the All Charts tab to see all of the available chart types.
![](/static/mb/chart_title.png)
* Use the Chart Elements, Chart Styles, and Chart Filters buttons next to the upper-right corner of the chart to add chart elements like axis titles or data labels, to customize the look of your chart
![](/static/mb/elements_styles_filters.png)
### ~
Have fun reviewing your simulation and analyze the acceleration by chart the Excel data using Excel.
* Connect the first micro:bit to your computer using your USB cable and run the charting script on it.
* Connect the second micro:bit to your computer using your USB cable and run the charting script on it.
* The first person and second person take turns tilting the micro:bit in the "x" direction while the other player charts the data on the micro:bit!
* Review and analyze the actual micro:bit device acceleration data on Excel * Review and analyze the actual micro:bit device acceleration data on Excel
* Display acceleration with y or z using plot bar graph by changing acceleration from "x" to "y" or "z"

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