diff --git a/docs/lessons/seismograph/activity.md b/docs/lessons/seismograph/activity.md index c30170d4..df505100 100644 --- a/docs/lessons/seismograph/activity.md +++ b/docs/lessons/seismograph/activity.md @@ -10,9 +10,8 @@ In this project, you will build your own seismograph. * USB cable * Scissors * Glue gun -* Cup (Plastic or Paper) -* Plate (Plastic or paper) * 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! @@ -21,17 +20,33 @@ Welcome! This activity will teach how to use the micro:bit to chart the strength 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. +3. Secure String: Fasten string to base of the cup and hang the remaining string outside the base of the cup. +### ~avatar avatar + +Seismograph built, let's code! ### ~ -Let's measure `acceleration (mg)` in terms of strength. Get the acceleration value (milli g-force), as measured in strength. + +4. Go to Codemicrobit.com + + Click or tap Create Code + Click or tap Block Editor + +### ~ + +5. + +We will measure `acceleration (mg)` in terms of strength. Get the acceleration value (milli g-force), as measured in strength. ```blocks input.acceleration(Dimension.Strength); ``` ### ~ + +6. + 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 @@ -42,6 +57,9 @@ basic.forever(() => { ``` ### ~ + +7. + Finally, we subtract the gravity from acceleration strength. ```blocks @@ -52,18 +70,27 @@ basic.forever(() => { ``` ### ~ + +8. + 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) + ### ~ + +9. 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. + ### ~ +10. + 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. @@ -71,6 +98,8 @@ The final part of this experiment is opening and reviewing the data in the Excel ### ~ +10. + 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 @@ -82,6 +111,11 @@ Use the Recommended Charts command on the Insert tab to quickly create a chart t * Click Insert > Recommended Charts. +### ~ + +11. + + ![](/static/mb/chart1.png) * On the Recommended Charts tab, scroll through the list of chart types that Excel recommends for your data. @@ -92,10 +126,18 @@ When you find the chart type that you want, click it, and then click OK. We want 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. +### ~ + +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.