vudials-client 2026.6.0

A python client module for VU1 Dials from Streacom

vudials_client

A Python client library for Streacom's VU1 Dial development hardware. Provides a simple, tested interface for controlling multiple dials and managing the VU1 server.

Features

• Full Dial API: Change a dial's value, backlight color, name, background image, and easing parameters
• Full Admin API: VU1 Dial Server API key management and dial provisioning
• Type-annotated: All public methods carry full parameter and return-type annotations
• Well tested: Comprehensive test suite using pytest and responses — no live hardware required
• CI tested: Passes on Python 3.11, 3.12, and 3.13 via GitHub Actions

Installation

pip install vudials-client

For development:

git clone [e-mail]:erinlkolp/vu1-dial-python-module.git
cd vu1-dial-python-module
pip install -e ".[dev]"

Quick Start

import os
from vudials_client import vudialsclient

server_address = os.environ["VU1_SERVER_ADDRESS"]
server_port    = int(os.environ["VU1_SERVER_PORT"])
server_key     = os.environ["API_KEY"]
admin_key      = os.environ["ADMIN_API_KEY"]

vu_meter  = vudialsclient.VUDial(server_address, server_port, server_key)
admin_api = vudialsclient.VUAdmin(server_address, server_port, admin_key)

# List connected dials
dial_list = vu_meter.list_dials()
print(dial_list.json())

# Set first dial to 75% with a blue backlight
uid = dial_list.json()[0]["uid"]
vu_meter.set_dial_value(uid, 75)
vu_meter.set_dial_color(uid, 0, 0, 255)

# List API keys
api_key_list = admin_api.list_api_keys()
print(api_key_list.json())

Note: The VU1 server communicates over plain HTTP on your local network. Keep the server on a trusted interface and treat the API keys as secrets. Both keys are passed as URL query parameters and will appear in server access logs.

API Reference

VUDial

Controls dial hardware. All methods return a requests.Response; HTTP 4xx/5xx errors raise requests.exceptions.HTTPError.

vu_meter = vudialsclient.VUDial(server_address, server_port, api_key)

Parameter	Type	Description
server_address	str	VU1 server hostname or IP (e.g. "localhost")
server_port	int	VU1 server port (e.g. 5340)
api_key	str	A valid API key for the VU1 server

Methods:

Method	Description
list_dials()	List all connected dials
get_dial_info(uid)	Get status/info for a specific dial
set_dial_value(uid, value)	Set the dial position (0–100)
set_dial_color(uid, red, green, blue)	Set the backlight color (0–255 each channel)
set_dial_background(uid, file)	Upload a background image file
get_dial_image_crc(uid)	Get the CRC of the current background image
set_dial_name(uid, name)	Assign a name to a dial
reload_hw_info(uid)	Reload hardware information for a dial
set_dial_easing(uid, period, step)	Configure dial movement easing
set_backlight_easing(uid, period, step)	Configure backlight easing
get_easing_config(uid)	Retrieve current easing configuration

VUAdmin

Manages the VU1 server. All methods return a requests.Response; HTTP 4xx/5xx errors raise requests.exceptions.HTTPError.

admin_api = vudialsclient.VUAdmin(server_address, server_port, admin_key)

Parameter	Type	Description
server_address	str	VU1 server hostname or IP
server_port	int	VU1 server port
admin_key	str	A valid Admin API key for the VU1 server

Methods:

Method	Description
provision_dials()	Provision newly connected dial hardware
list_api_keys()	List all configured API keys
create_api_key(name, dials)	Create a new API key; the generated key is in the response
update_api_key(name, target_key, dials)	Update an existing API key
remove_api_key(target_key)	Remove an API key

Testing

The test suite uses responses to mock all HTTP calls — no VU1 hardware or running server is required.

# Run all tests with coverage report
pytest tests/ -v --cov=vudials_client --cov-report=term-missing

# Run a specific test class
pytest tests/test_vudialsclient.py::TestVUDialSetDialColor -v

CI runs automatically on every push and pull request via GitHub Actions across Python 3.11, 3.12, and 3.13.

Documentation

Full API documentation can be regenerated from docstrings:

pip install pydoc-markdown
pydoc-markdown

This writes docs/api.md using the configuration in pydoc-markdown.yml.

Contributing

Contributions are welcome! Please open a pull request.

1. Fork the repository
2. Create a feature branch (git checkout -b feature/my-feature)
3. Make your changes and add tests for any new or modified behaviour
4. Ensure the test suite passes: pytest tests/ -v
5. Open a pull request against main

Please follow the existing code style: type-annotate all public methods, URL-encode user-supplied path segments with quote(value, safe=""), and keep library code free of logging.basicConfig() calls.

License

MIT — see LICENSE.

Author

Erin L. Kolp ([e-mail])

Many thanks to Aaron D. and Christopher K.!