From 841ea6d06045f39f942e9bc26d30756882e5530e Mon Sep 17 00:00:00 2001 From: Michael Elliot Braun Date: Thu, 28 Apr 2016 16:49:57 -0700 Subject: [PATCH] update lesson changes --- docs/lessons/seismograph.md | 34 ++++++++ docs/lessons/seismograph/activity.md | 108 ++++++++++++++++++++++++++ docs/lessons/seismograph/challenge.md | 94 ++++++++++++++++++++++ 3 files changed, 236 insertions(+) create mode 100644 docs/lessons/seismograph.md create mode 100644 docs/lessons/seismograph/activity.md create mode 100644 docs/lessons/seismograph/challenge.md diff --git a/docs/lessons/seismograph.md b/docs/lessons/seismograph.md new file mode 100644 index 00000000..0e936268 --- /dev/null +++ b/docs/lessons/seismograph.md @@ -0,0 +1,34 @@ +# Seismograph Lesson + +Build a seismograph with household materials + +## Topic + +Acceleration & Analog Read Pin + +## Quick Links + +* [activity](/lessons/seismograph/activity) +* [challenge](/lessons/seismograph/challenges) + +## Prior learning/place of lesson in scheme of work + +Learn how to **show LEDs** to turn on a LED light pattern on the LED screen. We will be learning basic comments such as show LEDs and pause. + +## Documentation + +```cards +basic.forever(() => { +}); +led.plotBarGraph(input.acceleration(Dimension.Strength) - 1023, 0); +led.plotBarGraph(pins.analogReadPin(AnalogPin.P0), 0); + +``` + +## Objectives + +* learn how to repeat code forever in the background +* learn how to display a vertical bar graph based on the value. +* learn how to return the sum of the two numbers +* learn how to get acceleration value in milli-gravitys +* learn how to read the connector value as analog as a value comprised between 0 and 1023 diff --git a/docs/lessons/seismograph/activity.md b/docs/lessons/seismograph/activity.md new file mode 100644 index 00000000..c30170d4 --- /dev/null +++ b/docs/lessons/seismograph/activity.md @@ -0,0 +1,108 @@ +# Seismograph Activity + +### ~avatar avatar + +In this project, you will build your own seismograph. + +## What you'll need: + +* micro:bit +* USB cable +* Scissors +* Glue gun +* Cup (Plastic or Paper) +* Plate (Plastic or paper) +* String +* Magnet + +Welcome! This activity will teach how to use the micro:bit to chart the strength of the acceleration. Let's get started! + +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. + +2. Fasten Magnet: Fasten end of the string to the magnet with glue + +3. Secure String: Use string 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. + + +### ~ +Let's measure `acceleration (mg)` in terms of strength. Get the acceleration value (milli g-force), as measured in strength. + +```blocks +input.acceleration(Dimension.Strength); +``` + +### ~ +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 +basic.forever(() => { + led.plotBarGraph(input.acceleration(Dimension.Strength), 0); +}); + +``` + +### ~ +Finally, we subtract the gravity from acceleration strength. + +```blocks +basic.forever(() => { + led.plotBarGraph(input.acceleration(Dimension.Strength) - 1023, 0); +}); + +``` + +### ~ +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) + +### ~ + +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. + +### ~ + +We want to chart the data collected by using a tool in Excel. + +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. + + +### ~ + + +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 + +![](/static/mb/data7.png) + +Use the Recommended Charts command on the Insert tab to quickly create a chart that’s 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 don’t 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) + +* 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 + +Excellent, you're ready to continue with the [challenges](/lessons/seismograph/challenge) + +### ~ + diff --git a/docs/lessons/seismograph/challenge.md b/docs/lessons/seismograph/challenge.md new file mode 100644 index 00000000..013f8b00 --- /dev/null +++ b/docs/lessons/seismograph/challenge.md @@ -0,0 +1,94 @@ +# Challenge + +### ~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! + +### ~ +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 +radio.sendNumber(input.acceleration(Dimension.X)); +``` +### ~ +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. + +```blocks +basic.forever(() => { + radio.sendNumber(input.acceleration(Dimension.X)); +}); + + +``` +### ~ +We want to register code to run when a packet is received over radio. We can implement this code by adding `on data received`. + +```blocks +basic.forever(() => { + radio.sendNumber(input.acceleration(Dimension.X)) +}) +radio.onDataReceived(() => { + +}) +``` +### ~ +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. + +```blocks +basic.forever(() => { + radio.sendNumber(input.acceleration(Dimension.X)) +}) +radio.onDataReceived(() => { + led.plotBarGraph(radio.receiveNumber(), 1023) +}) + +``` +### ~ +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) + +### ~ +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 + + ### ~ +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 that’s 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 don’t 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 +* Display acceleration with y or z using plot bar graph by changing acceleration from "x" to "y" or "z" +