Servos

The Servos class constructs a collection object containing multiple servo objects. Any method called on a Servos object will be called on each member of the Servos object with the same parameters.

Once instantiated, a Servos object is static. You may not push() additional Servo instances onto the array.

See also:

• Servo

Parameters

• numsOrObjects An array of pins, servo parameter objects and/or Servo objects:

  Property	Type	Value/ Description	Default	Required
  numsOrObjects	Array	An element for each servo. Any valid servo parameters will work		yes

Component Initialization

###With Pins

// Create three basic servos
//
new five.Servos([9, 10, 11]);

###With Objects

// Create two customized servos
//
new five.Servos([{
  pin: 9,
  center: true
}, {
  pin: 10,
  range: [20,140],
  startAt: 20
}]);

Usage

Control all members simultaneously:

var five = require("johnny-five");
var board = new five.Board();

board.on("ready", function() {

  var servos = new five.Servos([9, 10]);

  // Sweep all servos in the object from 0-180 and repeat.
  servos.sweep();
});

Control a single servo in a Servos instance:

var five = require("johnny-five");
var board = new five.Board();

board.on("ready", function() {

  var servos = new five.Servos([9, 10]);

  // Sweep the servo on pin 9 from 0-180 and repeat.
  servos[0].sweep();
});

Using multiple controllers in a single Servos instance:

var five = require("johnny-five");
var board = new five.Board();

board.on("ready", function() {

  var servos = new five.Servos([
    { controller: "PCA9685", pin: 0 }, // Attached to an Adafruit PWM shield
    { pin: 10 } // Attached directly to the Arduino
  ]);

  // Sweep both servos from 0-180 and repeat.
  servos.sweep();
});

Using Servo objects in Servos:

var five = require("johnny-five");
var board = new five.Board();

board.on("ready", function() {

  var shoulder = new five.Servo(9);
  var elbow = new five.Servo(10);

var joints = new five.Servos([shoulder, elbow]);

  // move servos independently
  elbow.to(20);
  shoulder.to(180);

  // Center all servos.
  joints.center();

});

API

All methods and properties in the Servo API are available on Servo

Events

Events are emitted on the individual Servo objects so listeners must be attached there. See Servo events

Examples

• Servos