biolink-test
v1.2.31
Published
cross-platform BLE library for Insai and Muse headband
Downloads
10
Readme
Biolink
Muse and Insai headband JavaScript Library (using Web Bluetooth)
- Usage with Jupyter (tslab)
Getting Started
- npm install
- npm install typescript (If not already installed)
Usage example
import { MuseClient } from 'biolink'
async function main() {
let client = new MuseClient({})
await client.connect()
await client.start()
client.eegReadings.subscribe((eeg) => {
console.log(eeg)
})
// Works for Muse2 and MuseS
client.ppgReadings.subscribe((ppg) => {
console.log(ppg)
})
client.telemetryData.subscribe((telemetry) => {
console.log(telemetry)
})
client.accelerometerData.subscribe((acceleration) => {
console.log(acceleration)
})
}
main()
Using in node.js
You can use this library to connect to the Muse EEG headset from your node.js application.
import {bluetooth} from "webbluetooth"
import {MUSE_SERVICE} from "./lib/constants"
import {MuseClient} from "./index"
async function connect() {
console.log('Request')
let device = bluetooth.requestDevice({
filters: [{services: [MUSE_SERVICE]}]
})
const gatt = await (await device).gatt.connect()
const client = new MuseClient({})
console.log(gatt)
await client.connect(gatt)
await client.start()
client.eegReadings!.subscribe(e => console.log(e))
}
connect()
Auxiliary Electrode
The Muse 2016 EEG headsets contains four electrodes, and you can connect an additional Auxiliary electrode through the Micro USB port. By default, muse-js does not read data from the Auxiliary electrode channel. You can change this behavior and enable the Auxiliary electrode by setting the enableAux
property to true
, just before calling the connect
method:
async function main() {
let client = new MuseClient({})
client.enableAux = true
await client.connect()
}
Event Markers
For convenience, there is an eventMarkers
stream included in MuseClient
that you can use in order to introduce timestamped event markers into your project. Just subscribe to eventMarkers
and use the injectMarker
method with the value and optional timestamp of an event to send it through the stream.
async function main() {
let client = new MuseClient({})
client.eventMarkers.subscribe((event) => {
console.log(event)
})
client.injectMarker('house')
client.injectMarker('face')
client.injectMarker('dog')
}
Common problems
If you are a Windows user, you may run into issues with bluetooth. Follow the instructions located here. After completing these steps, you may encounter runtime issues. If you encounter the following errors:
- No compatible USB Bluetooth 4.0 device found on supported device
- You need to add the USB ID values to the ../node_modules/@abandonware/bluetooth-hci-socket/lib/usb.js file under the VENDOR_DEVICE_LIST section. The USB ID values can be found when updating the driver through the Zadig program.
- LIBUSB_ERROR_ACCESS
- You need to run your script/notebook as an administrator.