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Make corrections to coding activities (#369)

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* Make corrections to coding activities

* Bit of format and typos
This commit is contained in:
Galen Nickel
2018-03-19 12:26:29 -07:00
committed by Peli de Halleux
parent 06f66571cf
commit f577c61998
5 changed files with 28 additions and 28 deletions
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docs/coding/line-detection.md
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@ -16,15 +16,15 @@ Think about:
### Build
Build a LEGO MINDSTORMS vehicle that can help prevent drivers from falling asleep and causing an accident.
Build a LEGO MINDSTORMS vehicle that can help prevent drivers from falling asleep and causing an accident. Start by constructing this model:
Start by constructing this [model](https://le-www-live-s.legocdn.com/sc/media/lessons/mindstorms-ev3/building-instructions/ev3-rem-color-sensor-down-driving-base-d30ed30610c3d6647d56e17bc64cf6e2.pdf):
[![EV3 robot with color sensor](/static/coding/line-detection/ev3-robot-color-sensor-down.jpg)](https://le-www-live-s.legocdn.com/sc/media/lessons/mindstorms-ev3/building-instructions/ev3-rem-color-sensor-down-driving-base-d30ed30610c3d6647d56e17bc64cf6e2.pdf)
![EV3 robot with color sensor](/static/coding/line-detection/ev3-robot-color-sensor-down.jpg)
Build red and green “lights” for your robot to detect. You can use LEGO bricks, colored tape, or marker on white paper. Building instructions:
Build red and green “lights” for your robot to detect. You can use LEGO bricks, colored tape, or marker on white paper. Read the building [instructions](https://le-www-live-s.legocdn.com/sc/media/files/support/mindstorms%20ev3/building-instructions/design%20engineering%20projects/color%20squares-0a88dfd98bb2e64b5b8151fc422bae36.pdf).
[![IMAGE: Color Squares](/static/coding/line-detection/ev3-color-squares.jpg)](https://le-www-live-s.legocdn.com/sc/media/files/support/mindstorms%20ev3/building-instructions/design%20engineering%20projects/color%20squares-0a88dfd98bb2e64b5b8151fc422bae36.pdf)
![IMAGE: Color Squares](/static/coding/line-detection/ev3-color-squares.jpg)
### Check
Before you program, check:
@ -33,7 +33,7 @@ Before you program, check:
* Are the wheels rotating freely?
* Are the wires connected from the Color Sensor to port 3?
![IMAGE: EV3 Driving Base](/static/coding/line-detection/ev3-robot-driving-base.jpg)
![EV3 Driving Base](/static/coding/line-detection/ev3-robot-driving-base.jpg)
### Program
@ -126,7 +126,7 @@ music.playSoundEffect(sounds.systemGeneralAlert)
1. Start motors ``B`` and ``C`` (drive forward with a curve toward the line).
2. Wait for the color sensor to detect the color black.
3. Play sound effect “System General Alert.”
3. Play sound effect ``system general alert``.
4. Start motors ``B`` and ``C`` (drive forward with a curve away from the line).
5. Wait for the color sensor to detect the color white.
6. Loop forever.
@ -141,11 +141,11 @@ loops.forever(function () {
})
```
### Download and test
#### Download and test
Click **Download** and follow the instructions to get your code onto your EV3 Brick.
### Differentiation
#### Differentiation
Program your robot to drive on “autopilot” along a given route. You will need to create a program that recognizes and responds to a dark line (or white line). You will create a line-following program and your robot will need to travel along the line without losing contact with it.
@ -167,14 +167,16 @@ motors.largeBC.steer(0, 50)
```block
if (true) {
} else {
}
```
### ~
### Sample Solutions
### Sample Solutions - Line Following in Loop
#### Line Following in Loop
#### Method 1
1. While the Color Sensor detects the color black, start motors ``B`` and ``C`` (drive forward with a curve toward the line).
2. While the Color Sensor detects the color white, start motors ``B`` and ``C`` (drive forward with a curve away from the line).
@ -193,7 +195,7 @@ forever(function () {
})
```
#### Line Following in Loop
#### Method 2
1. If the Color Sensor detects the color black, start motors ``B`` and ``C`` (drive forward with a curve toward the line).
Else the Color Sensor detects the color white, start motors ``B`` and ``C`` (drive forward with a curve away from the line).
@ -235,4 +237,3 @@ Personalize:
* Add a team photograph!
Congratulations! What will you design next?