3 Channel 5A DMX512 Controlled Relay Switch Kit DIY Converter DMX Dimmer Relay

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volatile int oldEncPos = 0; //stores the last encoder position value so we can compare to the current reading and see if it has changed (so we know when to print to the serial monitor)

int output_1 = 5; // names the ESP8266 GPIO output pin we are using (5 is D1 !!!), don't change this for Relay Shield.

Once you have finished editing things, you are ready to upload your Sketch to the D1 Mini. Plug it into your computer using a Micro-USB cable. You might see a brief flash of a blue LED next to the WiFi antenna, but otherwise not much will happen.

railSwitch overview at PLASA London 2021

You should use a separate show WiFi network, on a dedicated WiFi AP/Router. Don’t just add your light controllers to your home WiFi- you WILL have issues. I also recommend you set it up as a “hidden” network- look for a “Don’t Broadcast SSID” or similar option on your AP/Router.

I have several of these that I use to toggle “dumb” display elements on and off. I also use them toggle my display PSUs on and off. I have a script in FPP that toggles everything on at the beginning of a playlist, and then off when it is finished (or when the scheduler stops it). Simply connect hard-wired DMX (Multiverse SHoW Baby or Multiverse Node) or sACN (Multiverse Transmitter) to automatically send wireless DMX to any ColorSource Relay Multiverse Receiver within a 100-meter (328-foot) range. Take them out, plug them Northlight's Relay board will receive DMX512 digital protocol and standard 0-10 VDC analog to control mechanical relays. One big thing- be sure you have a Micro-USB cable that supports DATA! Many are charging-only and don’t have the data wires. You may need to try a few cables! You also want to set the universe and channel for the relay. Here is where you need to make a decision…

After a number of problems as my show grew in 2020- I found out you DO NOT want to waste universes like this. A show runner will send out all programmed universes, and generally all channels in that universe, so you can waste a huge amount of network bandwidth on almost-empty universes. You are better off doing the below- assign one universe to all your relays, and assign consecutive channels to them. Just remember to subtract 1 for the channel you assign on the D1 Mini… You have almost unlimited E1.31 Universes, so the most straightforward way to do this if you are going to use multiple relays is just to use a Universe for each one. So “Relay 1” might be Universe 1, “Relay 2” would be Universe 2. You would just set “universe = 1”, and “channel=0” Channel 0 translates to “Red” on many light controllers, or it will actually be called “Channel 1”. Internally it is 0 though, which can be a bit confusing.

First- replace “MyWiFi_SSID” with your WiFi network name (the WiFi network you are running your show from.) Be sure to keep the quotes. railSwitch offers a pre-set mode that enables it to run stored programmes without an active DMX controller. Other features include data loss mode (which determines what railSwitch should do in the event of loss of the DMX signal) and test mode, which is particularly useful during commissioning.

else if (reading == B00000100) bFlag = 1; //signal that we're expecting pinB to signal the transition to detent from free rotation The colour of the LED is not important and so the Farnell part number supplied is that of a cheap Yellow LED, feel free to substitue this with any colour of your choice.