microbit-apps · thomasjball · Feb 5, 2026
diff --git a/.astro/content-modules.mjs b/.astro/content-modules.mjs
@@ -1,17 +1,18 @@
 
 export default new Map([
 ["src/content/docs/index.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Findex.mdx&astroContentModuleFlag=true")],
-["src/content/docs/getting-started/display-shields.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fgetting-started%2Fdisplay-shields.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/extensions/display-shield-ext.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fextensions%2Fdisplay-shield-ext.mdx&astroContentModuleFlag=true")],
-["src/content/docs/getting-started/intro.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fgetting-started%2Fintro.mdx&astroContentModuleFlag=true")],
-["src/content/docs/microdata/guide.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrodata%2Fguide.mdx&astroContentModuleFlag=true")],
+["src/content/docs/getting-started/display-shields.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fgetting-started%2Fdisplay-shields.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/microcode/create.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrocode%2Fcreate.mdx&astroContentModuleFlag=true")],
-["src/content/docs/microcode/do.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrocode%2Fdo.mdx&astroContentModuleFlag=true")],
-["src/content/docs/microdata/start.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrodata%2Fstart.mdx&astroContentModuleFlag=true")],
+["src/content/docs/getting-started/intro.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fgetting-started%2Fintro.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/microcode/emotion-badge.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrocode%2Femotion-badge.mdx&astroContentModuleFlag=true")],
+["src/content/docs/microcode/do.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrocode%2Fdo.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/microcode/start.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrocode%2Fstart.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/microcode/when.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrocode%2Fwhen.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/resources/display-shield-ui.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fresources%2Fdisplay-shield-ui.mdx&astroContentModuleFlag=true")],
 ["src/content/docs/resources/faq.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fresources%2Ffaq.mdx&astroContentModuleFlag=true")],
-["src/content/docs/resources/troubleshooting.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fresources%2Ftroubleshooting.mdx&astroContentModuleFlag=true")]]);
+["src/content/docs/resources/troubleshooting.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fresources%2Ftroubleshooting.mdx&astroContentModuleFlag=true")],
+["src/content/docs/microdata/electromagnet.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrodata%2Felectromagnet.mdx&astroContentModuleFlag=true")],
+["src/content/docs/microdata/guide.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrodata%2Fguide.mdx&astroContentModuleFlag=true")],
+["src/content/docs/microdata/start.mdx", () => import("astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fdocs%2Fmicrodata%2Fstart.mdx&astroContentModuleFlag=true")]]);
 
diff --git a/.astro/data-store.json b/.astro/data-store.json
diff --git a/README.md b/README.md
@@ -8,8 +8,12 @@ MicroData, which are described more fully in the sibling directories
 
 # TODO
 
-- user interface and input mechanisms
-  - in web app
-  - on hardware
+More sections for the site
+
+- Community
+- Jacdac
+- Robot
+
+MicroData
+- bring over content from https://github.com/microbit-apps/MicroData/blob/main/EXPERIMENTS.MD
 
-
diff --git a/astro.config.mjs b/astro.config.mjs
@@ -54,7 +54,9 @@ export default defineConfig({
           label: "MicroData",
           items: [
             { label: "MicroData start", link: "/microdata/start/" },
-              { label: "MicroData guide", link: "/microdata/guide/" },
+            { label: "MicroData guide", link: "/microdata/guide/" },
+            { label: "Electro-magnets", link: "/microdata/electromagnet/"}
+
           ],
         },
         {

diff --git a/src/content/docs/microdata/electromagnet.mdx b/src/content/docs/microdata/electromagnet.mdx
@@ -0,0 +1,68 @@
+---
+title: Electro-magnet experiment
+description: Measure the magnetic force from an electro-magnet
+---
+
+MicroData lets you leverage the micro:bit's magnetometer 
+to measure magnetic force from an electro-magnet in real-time.
+This experiment investigates how the voltage, 
+number of turns of wire and distance affect the magnetic field 
+of an electro-magnet.
+
+### Requirements:
+
+* 9 Volt or 12 Volt battery, copper wire, an iron nail.
+* Optionally: resistors
+
+## Experiment
+
+### How to build an electro-magnet:
+
+1. Wrap the copper wire around the iron nail:
+![Electro-magnet](images/electro_magnet.png)
+
+2. Turn your battery off, then connect one of the ends of wire to 
+the positive terminal and the other end to the negative terminal:
+![Electro-magnet](images/electro_magnet_powered.png)
+
+### MicroData setup:
+
+1. On the MicroData home screen click on Real-time Data:
+![On the MicroData home screen click on Real-time Data](images/selecting_realtime_data.png)
+
+2. Select the Magnet sensor:
+![Select the Magnet sensor](./images/selecting_magnet.png)
+
+3. Press Done and see the micro-tesla readings from the magnometer:
+![Press Done and see the micro-tesla readings from the magnometer.](./images/electro_magnet_reading.png)
+
+## Tests:
+
+1. What is the reading on the magnetometer when there is no electromagnet nearby?
+
+2. What is the reading on the magnetometer when using a 9 Volt battery with 15 turns of wire, when the micro:bit is 5cm from the electromagnet?
+
+3. What is the reading on the magnetometer when using a 9 Volt battery with 15 turns of wire, when the micro:bit is 1cm from the electromagnet?
+
+4. Name 1 control variable used for question 2 and question 3.
+
+5. What is the reading on the magnetometer when using a 9 Volt battery with 30 turns of wire, when 5cm away from the micro:bit?
+
+6. What is the reading on the magnetometer when using a 9 Volt battery with 30 turns of wire, when 1cm away from the micro:bit?
+
+7. Name 1 independent variable in questions 5 and 6?
+
+8. How does the magnetic field strength change as the electromagnet is moved closer to the micro:bit?
+
+9. How does the magnetic field strength change as the number of turns of wire increases?
+
+10. Why is it that increasing the number of wire turns changes the magnetic field strength?
+
+11. Which affected the strength of the magnetic field more: changing the number of turns of wire, or changing the distance? Show your working and use appropriate units.
+
+## Questions:
+
+1. Name one control variable and why it was important.
+2. Which setup had the highest reading on the magnometer?
+3. Create a graph with the magnometer reading on the y-axis and the distance on the x-axis. 
+Using the data from Tests 4, 5 & 6.
diff --git a/src/content/docs/microdata/guide.mdx b/src/content/docs/microdata/guide.mdx
@@ -2,3 +2,5 @@
 title: MicroData guide
 description: The MicroData UI and features
 ---
+
+TBD
diff --git a/src/content/docs/microdata/images/MicroData_1_5.png b/src/content/docs/microdata/images/MicroData_1_5.png
diff --git a/src/content/docs/microdata/images/configuration_selection.png b/src/content/docs/microdata/images/configuration_selection.png
diff --git a/src/content/docs/microdata/images/electro_magnet.png b/src/content/docs/microdata/images/electro_magnet.png
diff --git a/src/content/docs/microdata/images/electro_magnet_powered.png b/src/content/docs/microdata/images/electro_magnet_powered.png
diff --git a/src/content/docs/microdata/images/electro_magnet_reading.png b/src/content/docs/microdata/images/electro_magnet_reading.png
diff --git a/src/content/docs/microdata/images/home_screen.png b/src/content/docs/microdata/images/home_screen.png
diff --git a/src/content/docs/microdata/images/jacdac_recording.png b/src/content/docs/microdata/images/jacdac_recording.png
diff --git a/src/content/docs/microdata/images/live_data_viewer.png b/src/content/docs/microdata/images/live_data_viewer.png
diff --git a/src/content/docs/microdata/images/microdata_electromagnet_test.png b/src/content/docs/microdata/images/microdata_electromagnet_test.png
diff --git a/src/content/docs/microdata/images/recording_data.jpg b/src/content/docs/microdata/images/recording_data.jpg
diff --git a/src/content/docs/microdata/images/selecting_accelerometers.png b/src/content/docs/microdata/images/selecting_accelerometers.png
diff --git a/src/content/docs/microdata/images/selecting_commander_mode.png b/src/content/docs/microdata/images/selecting_commander_mode.png
diff --git a/src/content/docs/microdata/images/selecting_comparator.png b/src/content/docs/microdata/images/selecting_comparator.png
diff --git a/src/content/docs/microdata/images/selecting_inequality.png b/src/content/docs/microdata/images/selecting_inequality.png
diff --git a/src/content/docs/microdata/images/selecting_logging_settings_2.png b/src/content/docs/microdata/images/selecting_logging_settings_2.png
diff --git a/src/content/docs/microdata/images/selecting_logging_settings_sensors.png b/src/content/docs/microdata/images/selecting_logging_settings_sensors.png
diff --git a/src/content/docs/microdata/images/selecting_magnet.png b/src/content/docs/microdata/images/selecting_magnet.png
diff --git a/src/content/docs/microdata/images/selecting_measurement_qty.png b/src/content/docs/microdata/images/selecting_measurement_qty.png
diff --git a/src/content/docs/microdata/images/selecting_period_vs_event.png b/src/content/docs/microdata/images/selecting_period_vs_event.png
diff --git a/src/content/docs/microdata/images/selecting_period_vs_event_2.png b/src/content/docs/microdata/images/selecting_period_vs_event_2.png
diff --git a/src/content/docs/microdata/images/selecting_realtime_data.png b/src/content/docs/microdata/images/selecting_realtime_data.png
diff --git a/src/content/docs/microdata/images/sensor_select.png b/src/content/docs/microdata/images/sensor_select.png
diff --git a/src/content/docs/microdata/images/tabular_data_viewer_1.png b/src/content/docs/microdata/images/tabular_data_viewer_1.png
diff --git a/src/content/docs/microdata/images/tabular_data_viewer_2.png b/src/content/docs/microdata/images/tabular_data_viewer_2.png
-Original file line number
+Diff line change
@@ Expand Up / @@ -2,3 +2,5 @@ @@
     title: MicroData guide
     description: The MicroData UI and features
     ---
+    TBD