43 lines
947 B
Markdown
43 lines
947 B
Markdown
# Magnetic Force
|
|
|
|
Find the amount of magnetic force (the strength of a magnet) in the direction you say.
|
|
|
|
```sig
|
|
input.magneticForce(Dimension.X);
|
|
```
|
|
|
|
## ~hint
|
|
|
|
The @boardname@ measures magnetic force with **microteslas**.
|
|
|
|
## ~
|
|
|
|
|
|
### Parameters
|
|
|
|
* ``dimension`` means which direction the @boardname@ should measure
|
|
magnetic force in: either `Dimension.X` (the left-right direction),
|
|
`Dimension.Y` (the forward/backward direction), or `Dimension.Z`
|
|
(the up/down direction)
|
|
|
|
### Returns
|
|
|
|
* a [number](/reference/types/number) of microteslas that means the strength of the magnet
|
|
|
|
### Example: metal detector
|
|
|
|
This program makes the center LED of the @boardname@ get brighter when
|
|
the magnetic force is stronger, and dimmer when it is weaker.
|
|
|
|
```blocks
|
|
led.plot(2, 2)
|
|
basic.forever(() => {
|
|
let f = input.magneticForce(Dimension.X)
|
|
led.setBrightness(f / 2000)
|
|
})
|
|
```
|
|
|
|
### See also
|
|
|
|
[compass heading](/reference/input/compass-heading)
|