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pxt-microbit Accessibility PR (#529)

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* Accessibility changes
This commit is contained in:
Sam El-Husseini
2017-09-07 13:42:08 -07:00
committed by GitHub
parent 3f87576a50
commit e3975e65e5
357 changed files with 1641 additions and 3540 deletions
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docs/projects/guitar/accelerometer.md
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@ -1,8 +1,8 @@
# Accelerometer Beat control
### @description @boardname@ guitar: using accelerometer to control tempo
## @description @boardname@ guitar: using accelerometer to control tempo
### ~avatar avatar
## ~avatar avatar
Use the Accelerometer to control guitar tempo
* Concepts:
@ -15,7 +15,7 @@ Use the Accelerometer to control guitar tempo
* Graphing
* Absolute value
### ~
## ~
## Duration: 30 - 45 minutes
@ -51,7 +51,7 @@ If the force along **Y** grows, the @boardname@ is tilting more and more vertica
The acceleration block approximately measures **milli-g**, which is 1/1000 of a **g** or the
acceleration of gravity.
### Step 1: Graphing acceleration
## Step 1: Graphing acceleration
```blocks
basic.forever(() => {
led.plotBarGraph(input.acceleration(Dimension.Y), 1023)
@ -63,17 +63,17 @@ basic.forever(() => {
**Test the movements that move the graph from 1 to 5 bars on the LEDs**
### Extra
## Extra
Try graphing the acceleration along the **X** and **Z** axis. Can you explain the differences?
### ~hint
## ~hint
## Mapping
**It is common to map one standard to another - such as with temperature**
![Fahrenheit to Celsius](/static/mb/projects/guitar/map_analogy.png "Fahrenheit to Celsius")
### ~
## ~
### Step 2: Mapping acceleration to Beat
## Step 2: Mapping acceleration to Beat
**@boardname@ sensors produce signal values between 0 to 1023. The *[map block](/reference/pins/map)* converts the signal to a desired range.**
```blocks
basic.forever(() => {
@ -90,7 +90,7 @@ basic.forever(() => {
**Test the movements that speed and slow the tempo**
### Step 3: Combine with light sensor tone control
## Step 3: Combine with light sensor tone control
**Put it all together!**
```blocks
@ -108,8 +108,8 @@ basic.forever(() => {
**Download the code** to the @boardname@ on the guitar
### Now play the guitar adjusting tone and tempo using the light sensor and accelerometer!
## Now play the guitar adjusting tone and tempo using the light sensor and accelerometer!
### ~button /projects/guitar/pinpress
## ~button /projects/guitar/pinpress
NEXT: Pin Press on/off
### ~
## ~