46 lines
1.3 KiB
Markdown
46 lines
1.3 KiB
Markdown
# Servo Write Pin
|
|
|
|
Writes a value to the servo on to the specified [pin](/device/pins) (``P0``, ``P1``, ``P2``), controlling the shaft accordingly.
|
|
|
|
* on a standard servo, this will set the angle of the shaft (in degrees), moving the shaft to that orientation.
|
|
* on a continuous rotation servo, this will set the speed of the servo (with 0 being full-speed in one direction, 180 being full speed in the other, and a value near 90 being no movement).
|
|
|
|
```sig
|
|
pins.servoWritePin(AnalogPin.P0, 180)
|
|
```
|
|
|
|
### Parameters
|
|
|
|
* `name` - [String](/reference/types/string); the pin name ("P0", "P1", or "P2")
|
|
* `value` - a [Number](/reference/types/number) between 0 and 180 included
|
|
|
|
### Examples
|
|
|
|
* setting the shaft angle to mid point on a servo
|
|
|
|
```blocks
|
|
pins.servoWritePin(AnalogPin.P0, 90)
|
|
```
|
|
|
|
* control the shaft by using the tilt information of the accelerometer
|
|
|
|
```blocks
|
|
basic.forever(() => {
|
|
let millig = input.acceleration(Dimensions.X)
|
|
// map accelerometer readings to angle
|
|
let angle = pins.map(millig, -1023, 1023, 0, 180)
|
|
pins.servoWritePin(AnalogPin.P0, angle)
|
|
})
|
|
```
|
|
|
|
* setting the full speed on a continuous servo
|
|
|
|
```blocks
|
|
pins.servoWritePin(AnalogPin.P0, 0)
|
|
```
|
|
|
|
### See also
|
|
|
|
[BBC micro:bit pins](/device/pins), [servo set pulse](/reference/pins/servo-set-pulse)
|
|
|