WeDo-BT control wrapper class

This library interacts with the LEGO® WeDo 2.0 system. Unlike the native WeDo software, this library allows for multiple WeDos to connect and commicate, with the computer as an intermediary. We use Bleak, an asynchronous platform agnostic Bluetooth Low Energy (BLE) library to communcate with the WeDos. The library will support any OS supported by Bleak.

Install

This library uses Python 3.6.8 or above

Install Bleak by typing the following command into your terminal: pip install bleak

Then, clone or download this repository and move WeDo2.py and __init__.py into your working directory

Usage

Programs will typically follow this structure:

from WeDo2 import *
import asyncio as aio

async def main ():
	h = HubManager(x)
	await h.connect_all()
	
	wedo_0 = h.wedos[0]
	device = await wedo_0.attach(port_number, Attachment())
	
	await wedo_0.set_sensor_callback(port_number, callback)
	await device.set_speed(speed) 
	
	while True:
		await h.end(False)
		# do your logic here

loop.run_until_complete(main())

h = HubManager(x): initializes a HubManager

• x: the number of WeDos you wish to use.

await h.connect_all(): connect all of the WeDos await wedo_0.attach(port_number, Attachment()): register a peripheral on a port number

• port_number: the port the peripheral is on
• Attachment(): an instance of the peripheral

await wedo_0.set_sensor_callback(port_number, callback): set a callback for sensor updates, if device is a sensor

• port_number: the port number of the sensor
• callback: the function that will be called each sensor update

await device.set_speed(speed) : if device is a motor, you can set it's speed

• speed: A value between -1 and 1, inclusive

await h.end(False): Wait for the program to end

• False: True=blocking (hold program until it ends), False=nonblocking(check, but then move on; good for loops)

If you're wondering which how the ports are numbered:

Examples

You can find more information in examples/