At the start of 2018, I built a cheap wireless DMX receiver as a parting ‘gift’ to my high school (Heck, I even wrote a training manual).
Their system had i s s u e s.
Two broken lighting consoles, and the DMX cable that connects from the control room was damaged due to water damage.
So something had to be done!
Fast forward to 2019, it was time to remake it - saying as I was needing to wireless control some DMX fixtures
Using the LXDMXWiFi_Library by Claude Heintz
/*
Attach (ESP8266) D4 to (RS485) DI
Attach VCC to 3V3
Attach GNDs together
Supposedly meant to short DE and RE to VCC
1B
2G
3A
D4 is the DMX out
*/
///
static const uint8_t ACTIVITY_INDICATOR_PIN = D0;
static const char *SSID = "< YOUR WIFI SSID >";
static const char *PASS = "< YOUR WIFI PASS >";
static const int subnet = 0;
static const int universe = 0;
static char* name = "ESP8266 Receiver";
// "ESP8266 ArtNet to DMX Receiver"
///
#include <LXESP8266UARTDMX.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <LXDMXWiFi.h>
#include <LXWiFiArtNet.h>
LXDMXWiFi* interface;
WiFiUDP wUDP;
uint8_t led_state_activity = 0;
void blinkActivity() {
digitalWrite(ACTIVITY_INDICATOR_PIN, !(led_state_activity = !led_state_activity) ? HIGH : LOW);
}
void setup() {
Serial.begin(115200);
Serial.println("Starting WiFi to DMX bridge");
pinMode(ACTIVITY_INDICATOR_PIN, OUTPUT);
ESP8266DMX.startOutput();
WiFi.mode(WIFI_STA);
WiFi.begin(SSID, PASS);
Serial.print("Connecting to wireless network: ");
Serial.println(SSID);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
blinkActivity();
}
Serial.print("Connected with IP: ");
Serial.print(WiFi.localIP());
interface = new LXWiFiArtNet(WiFi.localIP(), WiFi.subnetMask());
((LXWiFiArtNet*)interface)->setSubnetUniverse(subnet, universe); // 0 based! So subnet 1 (which is 0,), and universe 4
strcpy(((LXWiFiArtNet*)interface)->shortName(), name);
strcpy(((LXWiFiArtNet*)interface)->longName(), name);
wUDP.begin(interface->dmxPort());
((LXWiFiArtNet*)interface)->send_art_poll_reply(&wUDP);
digitalWrite(ACTIVITY_INDICATOR_PIN, HIGH);
led_state_activity = 0;
}
void loop() {
if ( interface->readDMXPacket(&wUDP) ) {
Serial.print("data");
for (int i = 1; i <= interface->numberOfSlots(); i++) {
ESP8266DMX.setSlot(i , interface->getSlot(i));
}
blinkActivity();
}
}
