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DMX Interfaces - Support Forum
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Software for USB-DMX512 module and DMX PIPE Music Visualization. The program is designed for controlling lights and other electronics by DMX512.

Download Udmx Software Compatible Software; Download Udmx Software Compatible Free. UDMX is an interesting middle man between your computer and your DMX lighting fixtures. Unlike most DMX computer interfaces, uDMX is most often tiny. I purchased a cheap uDMX interface from eBay, and its width and height are smaller than a credit card, with a.
UDMX comes with a handy external object for Max/MSP to control dimmers or other DMX equipment directly from Max/MSP: Hardware uDMX is built around a ATMEL ATMega8 microcontroller, very few external parts are used, thanks to Objective Development s firmware only usb driver.

Latest version

Released:

uDMX Interface Library

Project description

Copyright © 2016 by Dave Hocker (AtHomeX10@gmail.com)

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Overview

The purpose of this repo is to share what I have learned about programming theAnyma uDMX interface using Python and PyUSB on the Raspberry Pi (RPi). Th Anyma uDMXinterface is relatively inexpensive and there are a large number of clones availablefrom sites like eBay. However, there seems to be a dearth of information available forprogramming this interface under Linux (Raspbian Jessie in this case).

Many thanks go out to Markus Baertschi and the work he did on the uDMX-linux utility(see https://github.com/markusb/uDMX-linux). His C++ based uDMX utility served as the basisfor the majority of my learning exercise.

License

The work presented here is licensed under the GNU General Public License v3 as published by theFree Software Foundation, Inc.. See the LICENSE file for the full text of the license.

Source Code

The full source is maintained on GitHub.

Development Environment

Virtual Environment

This work was originally written in Python 2.7 but has been adapted for both Python 2 and Python 3.Version 1.1.0 works on Python 2. Version 2.0.0 and above works on Python 3.5+.A suitable development environment would use virtualenv and virtualenvwrapper to create a working virtual environment.The requirements.txt file can be used with pip to create the required virtual environment with all dependencies.

Here are some references for setting up virtualenv and virtualenvwrapper.

A quick Internet search will reveal many articles on how to install and setup virtualenv/virtualenvwrapper onmost any OS.

PyUSB

PyUSB requires one of the following: libusb 1.0, libusb 0.1 or OpenUSB. See 5. libusb 1.0 is part of theRaspbian Jessie image available from raspberrypi.org. How toinstall libusb on Windows and macOS is covered below.

Operating Systems

Raspbian

The main purpose of this project was to learn about using the uDMX interface on an RPi. And, this is theprimary environment where the author deploys the code.

macOS

However, enough of the workwas done on OS X 10.11.3 to conclude that this code will work or can be made to work on both OSes. If you want totry it on OS X, use brew to install libusb (it will install libusb 1.0).

Windows

The code has also been tested on Windows 10. To get this to work, you must install a Windows version of libusb.There are likely a number of ways to get a libusb installed.However, the following libusb version has been successfully tested:libusb-win32 using this
installer.The key is to follow the instructions for the 'Driver Install Creator Wizard'. You need to create a driver for theuDMX interface.

Programs and Modules

tryusb.py Program

This was my first learning tool. It does the following:

Locates the uDMX interface.
Prints some information about the interface.
Sends some basic commands to a Venue ThinPar64 demonstrating how to manipulate the light via DMX.

It also helped me resolve some issues with permissions on the RPi. To run this app:

uDMX.py Program

This program functions pretty much like the C++ based uDMX utility from Markus Baertschi. To get help, try

For each invocation, this program does the following:

Loads the uDMX.conf file from /etc/uDMX.conf.
Activates the virtualenv defined in the conf file IF PyUSB is not found in the current environment.
Loads the .uDMXrc file defined in the conf file.
Locates the uDMX interface based on vendor ID and product ID.
Sends the DMX message defined by the command line arguments.

uDMX.py uses the pyudmx.py module.

pyudmx.py Module

The pyudmx.py module provides a simple, easy to use module for talking to the uDMX interface. Essentially,it is a uDMX specific adapter on top of the pyusb module. If you want to write a uDMX oriented applicationconsider starting with pyudmx.py.

Udmx External For MacOS Catalina. Version 20201111, Compiled For MacOS Catalina. Needs Latest Max8 In Order To Remove Quarantine Restrictions, Afterwards It Also Works In Max7. Needs Libusb For Mac...

Simple usage example:

In this example, the open() method will default to opening the first uDMX interfacewith vendor ID 0x16c0 and product ID 0x05dc.

A more complete programming example can be found in the example.py file.

Learning Notes

Here are some notes from this learning exercise using Raspbian Jessie on an Rpi. The lessons learnedhere apply to most Linux systems, but probably do not apply to Windows or macOS.

Finding the uDMX Interface

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As there is no kernel driver for the uDMX, it does not show up under /dev like /dev/tty.

You can locate it this way:

The uDMX is the first device at Bus 001, Device 005 with ID 16c0:05dc. The 16c0 is the vendor ID andthe 05dc is the product ID. The uDMX can be found at /dev/bus/usb/001/005.

Permissions

If you want to program the uDMX on a raspberry pi without always running sudo, youmust do something with the default permissions of the uDMX device.

Notice the permissions are: 664. Only root and members of theroot group have write permission. This is why sudo is required for the current user (usually pi).You can fix this issue by changing the permissions on the uDMX to: 666.

Now check the permissions.

Unfortunately, this is only a temporary fix. On the next reboot the permissions will revertback to their default 664. One way to permanently fix this problem is to write audev rule that sets the permissions to 666 when the device is plugged in. Here's therule.

You can take this solution by editing the 98-uDMX-usb.rulesfile and uncommenting the line that contains this rule. Copy the edited file to /etc/udev/rules.d.

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To make sure the rule is used, pull the uDMX and replug it.

There is an obvious down side to this solution. It gives all users read/write access to the uDMX. Wecan limit read/write access to members of the pi group by changing the rule to:

This rule leaves the permissions set to 664 while changing the ownership to root:pi.Overall, this is probably more desirable. The root user owns the device, members of thepi group (which includes pi) have read/write access and all other users have read-only access.

You can choose this rule by editing 98-uDMX-usb.rules file and uncommentingthe line that contains this rule.

Symlinks

You can use a udev rule to create a symlink for a uDMX device.

This rule will produce a symlink for each uDMX device found.

Looking at these permissions you might think that there is open access to the uDMX.However, that is not the case. The permissions of the the symlink target prevail.The symlink simply allows all access to the symlink itself.

Thanks to muzzol for this tip.

udev Rules

For more on udev rules see Writing udev rules.

Reboot Issues

This is an observation. On a warm reboot, the uDMX interface is not always

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