ESP32-ArtNet-to-DMX

Per la versione in italiano clicca qui.

This is a simple ArtNet to DMX converter based on an ESP32 and two MAX485 modules.

This is a brief introduction to my project published on ElettronicaIN #276.

It is based on the sketch DMX_write by Mitch Weisbord and on the sketch ArtNetWifiNeoPixel by rstephan.

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Hardware

• ESP32 board

• 2 MAX 485 modules

• 2 DMX XLR connectors (female, panel mount)

• DC-DC voltage regulator (5V - 3A)

• USB cable

• DC plug, panel mount

• Platisc box for electronics

Wiring table for MAX485 and XLR connector

MAX 485 PIN	DMX Common Name	XLR connector pin
GND	GND/Shield	1
A	Data +	3
B	Data -	2

Wiring tables for MAX485 and ESP32

Universe A

ESP32 pin	MAX 485 pin
5V	VCC
GND	GND
4	DE
17	DI
4	RE

Universe B

ESP32 pin	MAX 485 pin
5V	VCC
GND	GND
21	DE
19	DI
21	RE

Wiring diagram

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Software

Configuration

//#define DHCP_DISABLED

#ifdef DHCP_DISABLED

IPAddress local_IP(192, 168, 1, 154);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);
IPAddress primaryDNS(192, 168, 1, 1);  //optional
IPAddress secondaryDNS(1, 1, 1, 1);    //optional

#endif

WiFiUDP UdpSend;
ArtnetWifi artnet;

const char* ssid = "MyArtNetNetwork";
const char* password = "MyArtNetNetwork";

Modify the sketch, by just changing the variables ssid and password, adapting them to your network.

You can decide to use DHCP or static IP. To disable DHCP just uncomment the line #define DHCP_DISABLED and set the variables local_IP, gateway, subnet and (optionally) primaryDNS and secondaryDNS.

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Feel free to edit the sketch, to improve the functionalities and to send pull requests.

Readme template taken from here