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Edits from LEGO team review (#676)

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Galen Nickel
2018-06-12 06:46:44 -07:00
committed by Peli de Halleux
parent 1d442b7de9
commit 5de5b64e61
15 changed files with 89 additions and 90 deletions
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19
docs/tutorials/line-following.md
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@ -2,7 +2,7 @@
## Introduction @unplugged
Make a program to follow a line using the Color sensor and reflected light. Let's test reflected light to see if it's white or black (on the line), and drive our robot accordingly.
Make your @boardname@ robot follow a line using the Color Sensor's Reflected Light Intensity Mode.
![Brick with color sensors tracking a yellow line](/static/tutorials/line-following/line-following.gif)
@ -36,7 +36,7 @@ forever(function () {
## Step 3
Open the ``||sensors:Sensors||`` Toolbox drawer. From the **Color Sensor** section, drag out a ``||sensors:color sensor light||`` value block and drop it into the second slot of the ``||logic:0 < 0||`` comparison block, replacing the `0`.
Open the ``||sensors:Sensors||`` Toolbox drawer. Drag out a ``||sensors:color sensor light||`` value block and drop it into the second slot of the ``||logic:0 < 0||`` comparison block, replacing the second `0`.
```blocks
forever(function () {
@ -50,7 +50,7 @@ forever(function () {
## Step 4
If the value of the reflected light is greater than 40% (white or very light), our robot is outside the line, so steer to the left. In the ``||logic:0 < 0||`` comparison block change the compared value to `40` replacing `0`.
If the value of the reflected light is greater than 40% (white or very light), our robot is outside the line, so steer to the left. In the ``||logic:0 < 0||`` comparison block change the first compared value from `0` to `40`.
```blocks
forever(function () {
@ -64,7 +64,7 @@ forever(function () {
## Step 5
Open the ``||motors:Motors||`` Toolbox drawer. Drag out **2** ``||motors:tank large motors||`` blocks and drop one of them into the ``||logic:if||`` part, and the other into the ``||logic:else||`` part of the ``||logic:if then else||`` block.
Open the ``||motors:Motors||`` Toolbox drawer. Drag out **2** ``||motors:tank motors||`` blocks and drop one of them into the ``||logic:if||`` part, and the other into the ``||logic:else||`` part of the ``||logic:if then else||`` block.
```blocks
forever(function () {
@ -78,7 +78,7 @@ forever(function () {
## Step 6
In the first ``||motors:tank large motors||`` block in the ``||logic:if||`` clause, change the speed values of the motors from ``50%``, ``50%`` to ``5%``, ``15%``. This slows down the robot, and steers it to the left (because the **C** motor is driving faster than the **B** motor).
In the first ``||motors:tank motors||`` block in the ``||logic:if||`` clause, change the speed values of the motors from ``50%``, ``50%`` to ``5%``, ``15%``. This slows down the robot and steers it to the left (because the **C** motor is driving faster than the **B** motor).
```blocks
forever(function () {
@ -92,7 +92,7 @@ forever(function () {
## Step 7
In the second ``||motors:tank large motors||`` block in the ``||logic:else||`` clause, change the speed values of the motors from ``50%``, ``50%`` to ``15%``, ``5%``. This slows down the robot, and steers it to the right (because the **B** motor is driving faster than the **C** motor).
In the second ``||motors:tank motors||`` block in the ``||logic:else||`` clause, change the speed values of the motors from ``50%``, ``50%`` to ``15%``, ``5%``. This slows down the robot and steers it to the right (because the **B** motor is driving faster than the **C** motor).
```blocks
forever(function () {
@ -110,11 +110,10 @@ Use the EV3 simulator to try out your code.
![Brick with color sensors tracking a yellow line](/static/tutorials/line-following/line-following.gif)
Move the slider under the Color Sensor to change the reflected light and check that motors
are moving as you would expect!
Move the slider under the Color Sensor to change the reflected light intensity and check that motors are moving as you would expect.
## Step 9
Plug your EV3 Brick into the computer with the USB cable, and click the **Download** button at the bottom of your screen. Follow the directions to save your program to the brick.
Plug your EV3 Brick into the computer with the USB cable, and click the **Download** button at the bottom of your screen. Follow the directions to save your program to the EV3 Brick.
Attach a Color Sensor to Port 3 of your brick, and attach your brick to a driving base with large motors attached to Ports B and C. See the instructions for building a _Driving Base with Color Sensor Down_. Test your program by positioning your robot to the right of a dark, thick line and then let it drive!
Attach a Color Sensor to Port 3 of your EV3 Brick, and attach your brick to a driving base with large motors attached to Ports B and C. See the instructions for building a _Driving Base with Color Sensor Down_. Test your program by positioning your robot to the right of a dark, thick line and then let it drive!