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All Projects → hobbyquaker → node-movehub

hobbyquaker / node-movehub

Licence: MIT license

Node.js interface for the Lego Boost Move Hub 🤖 🐱 🎸 🚚

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Labels

robotics boost hub ble move lego node-module

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movehub

Node.js interface for the Lego Boost Move Hub 🤖 🐱 🎸 🚚

Install

$ npm install movehub

If you want to utilize the new async/await syntax see https://github.com/ttu/node-movehub-async which is based on this module.

Usage example

API

Classes

Boost
Hub

Boost

Kind: global class

Boost
- .connect(address, callback)
- "ble-ready" (bleReady)
- "hub-found" (hub)
- .connectCallback : function

boost.connect(address, callback)

Kind: instance method of Boost

Param	Type	Description
address	`string`	MAC Address of the Hub
callback	`connectCallback`

"ble-ready" (bleReady)

Kind: event emitted by Boost

Param	Type	Description
bleReady	`boolean`	reports `true`/`false` when BLE is active

"hub-found" (hub)

Fires when a Move Hub is found

Kind: event emitted by Boost

Param	Type
hub	`object`
hub.uuid	`string`
hub.address	`string`
hub.localName	`string`

boost.connectCallback : `function`

Kind: instance typedef of Boost

Param	Type	Description
error	`null` \| `error`
hub	`Hub`	instance of the Hub Class

Hub

Kind: global class

Hub

hub.disconnect()

Disconnect from Move Hub

Kind: instance method of Hub

hub.motorTime(port, seconds, [dutyCycle], [callback])

Run a motor for specific time

Kind: instance method of Hub

Param	Type	Default	Description
port	`string` \| `number`		possible string values: `A`, `B`, `AB`, `C`, `D`.
seconds	`number`
[dutyCycle]	`number`	`100`	motor power percentage from `-100` to `100`. If a negative value is given rotation is counterclockwise.
[callback]	`function`

hub.motorTimeMulti(seconds, dutyCycleA, dutyCycleB, callback)

Run both motors (A and B) for specific time

Kind: instance method of Hub

Param	Type	Description
seconds	`number`
dutyCycleA	`number`	motor power percentage from `-100` to `100`. If a negative value is given rotation is counterclockwise.
dutyCycleB	`number`	motor power percentage from `-100` to `100`. If a negative value is given rotation is counterclockwise.
callback	`function`

hub.motorAngle(port, angle, [dutyCycle], [callback])

Turn a motor by specific angle

Kind: instance method of Hub

Param	Type	Default	Description
port	`string` \| `number`		possible string values: `A`, `B`, `AB`, `C`, `D`.
angle	`number`		degrees to turn from `0` to `2147483647`
[dutyCycle]	`number`	`100`	motor power percentage from `-100` to `100`. If a negative value is given rotation is counterclockwise.
[callback]	`function`

hub.motorAngleMulti(angle, dutyCycleA, dutyCycleB, callback)

Turn both motors (A and B) by specific angle

Kind: instance method of Hub

Param	Type	Description
angle	`number`	degrees to turn from `0` to `2147483647`
dutyCycleA	`number`	motor power percentage from `-100` to `100`. If a negative value is given rotation is counterclockwise.
dutyCycleB	`number`	motor power percentage from `-100` to `100`. If a negative value is given rotation is counterclockwise.
callback	`function`

hub.led(color, [callback])

Control the LED on the Move Hub

Kind: instance method of Hub

Param	Type	Description
color	`boolean` \| `number` \| `string`	If set to boolean `false` the LED is switched off, if set to `true` the LED will be white. Possible string values: `off`, `pink`, `purple`, `blue`, `lightblue`, `cyan`, `green`, `yellow`, `orange`, `red`, `white`
[callback]	`function`

hub.subscribe(port, [option], [callback])

Subscribe for sensor notifications

Kind: instance method of Hub

Param	Type	Default	Description
port	`string` \| `number`		e.g. call `.subscribe('C')` if you have your distance/color sensor on port C.
[option]	`number`	`0`	Unknown meaning. Needs to be 0 for distance/color, 2 for motors, 8 for tilt
[callback]	`function`

hub.unsubscribe(port, [option], [callback])

Unsubscribe from sensor notifications

Kind: instance method of Hub

Param	Type	Default	Description
port	`string` \| `number`
[option]	`number`	`0`	Unknown meaning. Needs to be 0 for distance/color, 2 for motors, 8 for tilt
[callback]	`function`

hub.write(data, callback)

Send data over BLE

Kind: instance method of Hub

Param	Type	Description
data	`string` \| `Buffer`	If a string is given it has to have hex bytes separated by spaces, e.g. `0a 01 c3 b2`
callback	`function`

"rssi" (rssi)

Kind: event emitted by Hub

Param	Type
rssi	`number`

"disconnect"

Kind: event emitted by Hub

"connect"

Fires when a connection to the Move Hub is established

Kind: event emitted by Hub

"port" (port)

Fires on port changes

Kind: event emitted by Hub

Param	Type
port	`object`
port.port	`string`
port.action	`string`

"color" (color)

Kind: event emitted by Hub

Param	Type
color	`string`

"distance" (distance)

Kind: event emitted by Hub

Param	Type	Description
distance	`number`	distance in millimeters

"tilt" (tilt)

Kind: event emitted by Hub

Param	Type
tilt	`object`
tilt.roll	`number`
tilt.pitch	`number`

"rotation" (rotation)

Kind: event emitted by Hub

Param	Type
rotation	`object`
rotation.port	`string`
rotation.angle

Contributing

Pull Requests welcome! :-)

Credits

Thanks to Jorge Pereira who analyzed and documented the move hub ble protocol: https://github.com/JorgePe/BOOSTreveng

Disclaimer

LEGO and BOOST are Trademarks from The LEGO Company, which does not support (most probably doesn't even know about) this project. And of course I'm not responsible for any damage on your LEGO BOOST devices - use it at your own risk.

License

MIT (c) Sebastian Raff

Note that the project description data, including the texts, logos, images, and/or trademarks, for each open source project belongs to its rightful owner. If you wish to add or remove any projects, please contact us at [email protected].

Stars: ✭ 57

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