VECFootpedal

A Library to use VEC Footpedal in Node.js projects without a driver. This device was originally manufactured by PI Engineering.

This library supports multiple devices connected at one time via simply including a hash of the device id for each event as the final parameter in the callback.

Installation

npm install vec-footpedal

Usage

const pedal = require('vec-footpedal');

pedal.on('connected', (deviceInfo) => {
  console.log('Connected to ' + deviceInfo.name);
});

// Start after 'connect' event listener has been set up
pedal.start();

API

Methods

start(watchUsb)

• watchUsb Boolean - whether to monitor for USB devices (true by default)

Starts the service and optionally monitors USB device connections for VEC Footpedals. If watchUsb is true, it will find all connected devices.

This should be called after the 'connect' event listener has been declared, otherwise already-connected devices will not be detected.

connect(path)

• path String - the device path

If you're not automatically monitoring for USB devices, use this to connect to a specific device by path.

stop()

Stops the service and monitoring. This must be called before your script ends.

getDeviceList()

Use to retrieve all the devices that are connected.

Returns:

• Object[] - contains the following information:
  • id String - either the serial number (if it exists) or the device path, turned into an MD5 hash, used to distinguish between multiple devices that may be connected at once.
  • path String - the USB device path
  • name String - name of the device ('Footpedal')
  • numButtons Integer

getDeviceById(id)

• id String - the device id

Returns Object | null:

• id String - either the serial number (if it exists) or the device path, turned into an MD5 hash, used to distinguish between multiple devices that may be connected at once.
• path String - the USB device path
• name String - name of the device ('Footpedal')
• numButtons Integer

getDeviceByPath(path)

• path String - the device path

Returns Object | null:

• id String - either the serial number (if it exists) or the device path, turned into an MD5 hash, used to distinguish between multiple devices that may be connected at once.
• name String - name of the device ('Footpedal')
• numButtons Integer

getRawHidDevice(id)

• id String - the device id

Returns Object | null - the raw HID device object

Events

shuttle.on('...', () => {})

Event: connected

Emitted when a device has been plugged into a USB port.

Returns Object:

• id String - either the serial number (if it exists) or the device path, turned into an MD5 hash, used to distinguish between multiple devices that may be connected at once.
• name String - name of the device ('Footpedal')
• numButtons Integer

Event: disconnected

Emitted when the device has been unplugged or has failed.

Returns id String - either the serial number (if it exists) or the device path, turned into an MD5 hash.

Event: buttondown

Emitted when a button is pressed on the device.

Returns:

• button Integer - the button number
• id String - either the serial number (if it exists) or the device path, turned into an MD5 hash.

Event: buttonup

Emitted when a button is released on the device.

Returns:

• button Integer - the button number
• id String - either the serial number (if it exists) or the device path, turned into an MD5 hash.

Enumerations

pedal.vids

An enumeration of vendor ids for Footpedal devices, namely for VEC:

• VEC

pedal.pids

An enumeration of product ids for Footpedal devices:

• FOOTPEDAL

Linux Note

By default, the udev system adds VEC Footpedal as root only access. To fix this, you need to copy 99-VECFootpedal.rules to:

/etc/udev/rules.d

Then reboot your computer.

Licence

MIT