113 lines
2.1 KiB
Markdown
113 lines
2.1 KiB
Markdown
# compass activity
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Display the direction that the micro:bit is facing using the compass
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### ~avatar avatar
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Welcome! This guided tutorial will show you how to program a script that displays the direction the micro:bit is pointing. Let's get started!
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### ~
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## Step 1
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Create a loop that will continuously update the reading of the compass.
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```blocks
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basic.forever(() => {
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})
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```
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## Step 2
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Store the reading of the micro:bit in a variable called `degrees`.
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```blocks
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basic.forever(() => {
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let degrees = input.compassHeading()
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})
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```
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## Step 3
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If `degrees` is less than `45`, then the compass heading is mostly pointing toward North. Display `N` on the micro:bit.
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```blocks
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basic.forever(() => {
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let degrees = input.compassHeading();
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if (degrees < 45) {
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basic.showString("N");
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}
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});
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```
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## Step 4
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If `degrees` is less than 135, the micro:bit is mostly pointing East. Display `E` on the micro:bit.
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```blocks
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basic.forever(() => {
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let degrees = input.compassHeading();
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if (degrees < 45) {
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basic.showString("N");
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}
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else if (degrees < 135) {
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basic.showString("E");
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}
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});
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```
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## Step 5
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If `degrees` is less than 225, the micro:bit is mostly pointing South. Display `S` on the micro:bit.
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```blocks
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basic.forever(() => {
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let degrees = input.compassHeading();
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if (degrees < 45) {
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basic.showString("N");
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}
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else if (degrees < 135) {
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basic.showString("E");
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}
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else if (degrees < 225) {
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basic.showString("S");
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}
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});
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```
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## Step 6
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If none of these conditions returned true, then the micro:bit must be pointing West. Display `W` on the micro:bit.
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```blocks
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basic.forever(() => {
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let degrees = input.compassHeading();
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if (degrees < 45) {
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basic.showString("N");
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}
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else if (degrees < 135) {
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basic.showString("E");
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}
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else if (degrees < 225) {
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basic.showString("S");
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}
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else {
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basic.showString("W");
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}
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});
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```
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### ~avatar avatar
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Excellent, you're ready to continue with the [challenges](/lessons/compass/challenges)!
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### ~
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