node-poweredup

Class: WeDo2SmartHub

WeDo2SmartHub

new WeDo2SmartHub()

The WeDo2SmartHub is emitted if the discovered device is a WeDo 2.0 Smart Hub.

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Extends

Members

<readonly> batteryLevel

Properties:
Name Type Description
batteryLevel number

Battery level of the hub (Percentage between 0-100)
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<readonly> current

Properties:
Name Type Description
current number

Current usage of the hub (Milliamps)
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<readonly> firmwareVersion

Properties:
Name Type Description
firmwareVersion string

Firmware version of the hub
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<readonly> hardwareVersion

Properties:
Name Type Description
firmwareVersion string

Hardware version of the hub
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<readonly> name

Properties:
Name Type Description
name string

Name of the hub
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<readonly> primaryMACAddress

Properties:
Name Type Description
primaryMACAddress string

Primary MAC address of the hub
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<readonly> rssi

Properties:
Name Type Description
rssi number

Signal strength of the hub
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<readonly> uuid

Properties:
Name Type Description
uuid string

UUID of the hub
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<readonly> voltage

Properties:
Name Type Description
voltage number

Voltage of the hub (Volts)
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Methods

brakeMotor(port)

Fully (hard) stop the motor on a given port.

Parameters:
Name Type Description
port string
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Returns:

Resolved upon successful completion of command.

Type
Promise

connect()

Connect to the Hub.

Inherited From:
Overrides:
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Returns:

Resolved upon successful connect.

Type
Promise

disconnect()

Disconnect the Hub.

Inherited From:
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Returns:

Resolved upon successful disconnect.

Type
Promise

getHubType()

Get the hub type.

Inherited From:
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Returns:
Type
HubType

getPortDeviceType(port)

Get the device type for a given port.

Parameters:
Name Type Description
port string
Inherited From:
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Returns:
Type
DeviceType

playTone(frequency, time)

Play a tone on the Hub's in-built buzzer

Parameters:
Name Type Description
frequency number
time number

How long the tone should play for (in milliseconds).
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Returns:

Resolved upon successful completion of command (ie. once the tone has finished playing).

Type
Promise

rampMotorSpeed(port, fromSpeed, toSpeed, time)

Ramp the motor speed on a given port.

Parameters:
Name Type Description
port string
fromSpeed number

For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0.
toSpeed number

For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0.
time number

How long the ramp should last (in milliseconds).
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Returns:

Resolved upon successful completion of command.

Type
Promise

setLEDColor(color)

Set the color of the LED on the Hub via a color value.

Parameters:
Name Type Description
color Color
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Returns:

Resolved upon successful issuance of command.

Type
Promise

setLEDRGB(red, green, blue)

Set the color of the LED on the Hub via RGB values.

Parameters:
Name Type Description
red number
green number
blue number
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Returns:

Resolved upon successful issuance of command.

Type
Promise

setLightBrightness(port, brightness [, time])

Set the light brightness on a given port.

Parameters:
Name Type Argument Description
port string
brightness number

Brightness value between 0-100 (0 is off)
time number <optional>

How long to turn the light on (in milliseconds). Leave empty to turn the light on indefinitely.
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Returns:

Resolved upon successful completion of command. If time is specified, this is once the light is turned off.

Type
Promise

setMotorSpeed(port, speed [, time])

Set the motor speed on a given port.

Parameters:
Name Type Argument Description
port string
speed number

For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0.
time number <optional>

How long to activate the motor for (in milliseconds). Leave empty to turn the motor on indefinitely.
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Returns:

Resolved upon successful completion of command. If time is specified, this is once the motor is finished.

Type
Promise

setName(name)

Set the name of the Hub.

Parameters:
Name Type Description
name string

New name of the hub (14 characters or less, ASCII only).
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Returns:

Resolved upon successful issuance of command.

Type
Promise

shutdown()

Shutdown the Hub.

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Returns:

Resolved upon successful disconnect.

Type
Promise

sleep(delay)

Sleep a given amount of time.

This is a helper method to make it easier to add delays into a chain of commands.

Parameters:
Name Type Description
delay number

How long to sleep (in milliseconds).
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Returns:

Resolved after the delay is finished.

Type
Promise

subscribe(port [, mode])

Subscribe to sensor notifications on a given port.

Parameters:
Name Type Argument Description
port string
mode number <optional>

The sensor mode to activate. If no mode is provided, the default for that sensor will be chosen.
Inherited From:
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Returns:

Resolved upon successful issuance of command.

Type
Promise

unsubscribe(port)

Unsubscribe to sensor notifications on a given port.

Parameters:
Name Type Description
port string
Inherited From:
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Returns:

Resolved upon successful issuance of command.

Type
Promise

wait(commands)

Wait until a given list of concurrently running commands are complete.

This is a helper method to make it easier to wait for concurrent commands to complete.

Parameters:
Name Type Description
commands Array.<Promise.<any>>

Array of executing commands.
Inherited From:
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Returns:

Resolved after the commands are finished.

Type
Promise

Events

attach

Emits when a motor or sensor is attached to the Hub.

Parameters:
Name Type Description
port string
type DeviceType
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button

Emits when a button is pressed.

Parameters:
Name Type Description
button string
state ButtonState
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color

Emits when a color sensor is activated.

Parameters:
Name Type Description
port string
color Color
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detach

Emits when an attached motor or sensor is detached from the Hub.

Parameters:
Name Type Description
port string
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disconnect

Emits when the hub is disconnected.

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distance

Emits when a distance sensor is activated.

Parameters:
Name Type Description
port string
distance number

Distance, in millimeters.
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rotate

Emits when a rotation sensor is activated.

Parameters:
Name Type Description
port string
rotation number
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tilt

Emits when a tilt sensor is activated.

Parameters:
Name Type Description
port string
x number
y number
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