45 lines
1.2 KiB
Markdown
45 lines
1.2 KiB
Markdown
# Acceleration
|
|
|
|
Get the acceleration value (milli g-force), in one of three specified dimensions.
|
|
|
|
Find the acceleration of the @boardname@ (how fast it is speeding up or slowing down).
|
|
|
|
```sig
|
|
input.acceleration(Dimension.X);
|
|
```
|
|
|
|
## ~hint
|
|
|
|
You measure acceleration with the **milli-g**, which is 1/1000 of a **g**.
|
|
A **g** is as much acceleration as you get from Earth's gravity.
|
|
|
|
## ~
|
|
|
|
|
|
|
|
### Parameters
|
|
|
|
* ``dimension`` means which direction you are checking for acceleration, either `Dimension.X` (left and right), `Dimension.Y` (forward and backward), or `Dimension.Z` (up and down)
|
|
|
|
### Returns
|
|
|
|
* a [number](/reference/types/number) that means the amount of acceleration. When the @boardname@ is lying flat on a surface with the screen pointing up, `x` is `0`, `y` is `0`, and `z` is `-1023`.
|
|
|
|
### Example: bar chart
|
|
|
|
This example shows the acceleration of the @boardname@ with a bar graph.
|
|
|
|
```blocks
|
|
basic.forever(() => {
|
|
led.plotBarGraph(input.acceleration(Dimension.X), 1023)
|
|
})
|
|
```
|
|
|
|
|
|
### See also
|
|
|
|
[set accelerometer range](/reference/input/set-accelerometer-range),
|
|
[compass heading](/reference/input/compass-heading),
|
|
[light level](/reference/input/light-level)
|
|
|