Wiznet makers

An Open-Source Arduino Project for Sending sACN (E1.31) Lighting Data – sACNSource

DMX512 is one of the most widely used protocols in lighting control. Today, lighting data is often transmitted not only through traditional serial DMX, but also over Ethernet networks. sACNSource is an open-source project designed for this purpose.

It is a lightweight Arduino library that generates sACN (E1.31) packets and sends them over UDP. Rather than implementing a full lighting control system, it focuses on one simple task: sending DMX channel data through a network-based lighting protocol.

One of the most interesting points is that it can work with both Wi-Fi and Ethernet, making it useful for everything from quick wireless demos to stable wired lighting control systems.

What Does sACNSource Do?

sACNSource takes DMX channel values from Arduino and sends them as sACN packets over UDP.

This makes it possible to build simple network lighting workflows such as:

Reading sensor inputs

Generating DMX channel values on Arduino

Packing the data into sACN

Sending it to lighting devices or lighting software over the network

Because of this, makers can experiment with network lighting control using analog inputs, joysticks, rotary encoders, and other simple interfaces.

Why Is It Interesting for Makers?

One of the biggest strengths of this project is its flexibility.
Since it is based on Arduino’s UDP interface, it can be used with both Wi-Fi and Ethernet.

Wi-Fi :

Easy to test quickly, Simple wiring, Good for portable demos and prototypes

Ethernet :

More stable wired communication, Better for latency and connection quality, Suitable for fixed installations and embedded control nodes

This means makers can start with Wi-Fi for convenience, then move to Ethernet when a more reliable setup is needed.

What Is sACN?

sACN stands for Streaming ACN and is the ANSI E1.31 standard used in lighting control.

In simple terms, it is a protocol for sending DMX512 data over Ethernet networks.
While traditional DMX uses serial communication, sACN extends it into a UDP/IP-based streaming format.

A universe is the basic unit of DMX data, and each universe typically contains 512 channels. sACN keeps this same structure while moving the data onto a network.

Why Is WIZnet Ethernet a Good Match?

Since sACN is based on UDP, reliable packet transmission is important.
That is why Ethernet-based setups can be especially attractive, and this is where WIZnet Arduino Ethernet solutions have clear advantages.

Stable wired communication

Wi-Fi is convenient, but wireless environments can introduce latency, packet loss, or unstable connections. Ethernet provides a more stable and predictable communication path, which is important for continuous lighting control.

Easy integration in Arduino projects

WIZnet offers Arduino-friendly Ethernet solutions and libraries, making it easier for makers to focus on building the application instead of dealing with low-level networking.

A strong base for embedded systems

This kind of project can grow from a simple demo into a fixed lighting controller, a network lighting interface, or a more advanced embedded Ethernet node. In these cases, WIZnet solutions provide a practical foundation.

Final Thoughts

sACNSource is a small but useful open-source library for sending sACN (E1.31) lighting data from Arduino over UDP. Its simple structure makes it a good starting point for learning and experimenting with DMX over IP.

Because it supports both Wi-Fi and Ethernet, it can be used in a wide range of maker projects. And for more stable wired setups, WIZnet Arduino Ethernet solutions can be a very strong platform for building reliable embedded lighting control devices.

What is sACNSource?

sACNSource is an open-source Arduino library that generates sACN (E1.31) packets and sends DMX lighting data over UDP. It is designed for makers and developers who want to experiment with network-based lighting control using Arduino.

What is sACN in lighting control?

sACN stands for Streaming ACN and is the ANSI E1.31 standard for sending DMX512 data over Ethernet networks. It allows lighting data to be transmitted over UDP/IP instead of traditional serial-only DMX wiring.

What is the difference between DMX512 and sACN?

DMX512 is a traditional serial lighting control protocol, while sACN sends the same type of lighting data over an IP network. This makes sACN more flexible for longer distances, multi-device networks, and software-based lighting systems.

Can Arduino send sACN lighting data?

Yes. Arduino can send sACN lighting data by using a library such as sACNSource together with a UDP-capable network interface. This can be done over either Wi-Fi or Ethernet, depending on the hardware.

Does sACNSource support both Wi-Fi and Ethernet?

Yes. sACNSource is designed to work with Arduino UDP interfaces, so it can be used with both Wi-Fi-based UDP and Ethernet-based UDP. This makes it suitable for both quick wireless prototypes and stable wired installations.