MIDI-MT - Lighting control module “lighting devices, BobLight protocol”

Lighting control

Settings via the “BobLight” protocol

The module allows you to control lighting devices, addressable LED strips and equipment using the “BobLight” protocol. Packets of the “BobLight” protocol are transformed into the “DMX512” protocol. As a result, it is possible to use multi-address DMX controllers with an SPI interface. For example, one of the most affordable is SP201E - DMX512 decoder with SPI support and connection of LED strips WS2812B, WS2811.

Also, it is possible to connect, instead of a DMX512 adapter, standard developments on the Arduino platform for controlling LED strips such as WS2812B, WS2811, as AdaLight, AdriLight and so on. The protocol was developed to create lighting effects “Ambient lighting” - AtmoLight/AmbiLight.

Selecting “Port on the BobLight network” indicates which port BobLight data should be sent to, the default port number is 19333.

Selecting “BobLight Network” will allow you to determine on which interface the BobLight server will be available.

The field “Start address DMX512” specifies the first DMX address of the device to which the LED strip is connected. In the case of connecting Arduino devices like momo, this address should be 0.

Selecting “Reverse DMX addresses” allows you to swap the “beginning” and “end” of the LED strip.

The “Brightness” adjustment sets the maximum overall brightness of the LED strip. In the configuration file, the value 0 corresponds to maximum brightness.

The button with the sign “+” shows all the settings of the LED strip in the form of a table.

The “LED Location” group allows you to configure the connected strip or individual lighting devices.

Four fields “Number” indicate the number of LEDs on the top, right, left, and two groups below. If the number in the upper and lower groups matches, then the client receives a configuration where the LEDs are located in the same way. If the sum of the lower groups is less, then the arrangement is calculated by spacing the groups along the edges, leaving a gap in the center.

Radio buttons “Start of tape” indicate the place where the first DMX address of the connected device is located.

Selecting “LEDs color scheme” allows you to select the type of connected LEDs: RGB, RBG, BRG, BGR, GRB or GBR.

Buttons with the “Settings” sign will open a dialog where you can specify the grip width and the distance from the edge.

Configuration file

It is also possible to edit the configuration file in any editor you are familiar with. The main section of lighting control settings using the BobLight protocol looks like this:

  ...
  "lights": {
    "pool": true,
    "boblight": {
      "enable": true,
      "port": 19333,
      "ip": "192.168.22.105",
      "start_dmx": 0,
      "reverse_dmx": false,
      "brightness": 0,
      "direction": {
        "colors_type": 5,
        "screen_start": 0,
        "screen_directions": [ 12, 12, 14, 14, 28 ],
        "screen_height": [ 10, 10, 10, 10, 10 ],
        "screen_padding": [ 0, 0, 0, 0, 0 ]
      }
    }
    ... 
  },
  ...

“BobLight” Control Software