doc: document RDM support
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README.md
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README.md
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This is the DMX splitter for WLED chain.
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This is the RDM splitter for WLED chain.
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purpose
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purpose
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=======
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WLED chain devices can be inter-connector using Ethernet cables.
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WLED chain devices can be inter-connector using Ethernet cables.
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They can carry data signal and power.
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They can carry data signal and power.
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The DMX splitter allows injecting DMX512 data signal from regular XLR cable, and power from external power supplies.
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The RDM splitter allows injecting DMX512 data signal from regular XLR cable, and power from external power supplies.
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The WLED chain is electrically isolated from the XLR chain.
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The WLED chain is electrically isolated from the XLR chain.
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RDM
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---
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DMX allows a controller to send data to devices.
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RDM is an extension to that, allowing the devices to reply back to requests.
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Using RDM, you can:
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- get device name
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- get device information
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- set device address
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- ...
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Now devices can be configured remotely, and no ladder is require anymore.
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The RDM splitter is actually a DMX splitter with RDM support.
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If you don't need RDM, just don't place the MCU (and passives next to it).
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The board will still work as DMX splitter.
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The WLED chain hardware is RDM capable.
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Software support needs to be added.
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For now you still have to use the web interface to configure it.
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usage
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usage
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=====
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=====
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@ -26,7 +48,7 @@ properties
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The XLR chain and WLED chain circuits are electrically isolated.
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The XLR chain and WLED chain circuits are electrically isolated.
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The DMX splitter board needs to be powered to operate.
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The RDM splitter board needs to be powered to operate.
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The DMX512 data will then be copied from the XLR chain to the RJ45 port for WLED chain.
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The DMX512 data will then be copied from the XLR chain to the RJ45 port for WLED chain.
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The power can come from the 2.1/5.5 barrel jack (marked VIN), the spring terminals (the two terminals next to VIN), or from the WLED chain through the RJ45 port or corresponding terminal.
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The power can come from the 2.1/5.5 barrel jack (marked VIN), the spring terminals (the two terminals next to VIN), or from the WLED chain through the RJ45 port or corresponding terminal.
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@ -45,8 +67,9 @@ Take this into account when reusing this power rails from the WLED chain.
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The yellow LED on the RJ45 port lights on when power is available on VIN.
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The yellow LED on the RJ45 port lights on when power is available on VIN.
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The green LED on the RJ45 port light on when the electronic on the board is powered, using the on-board DC to DC buck regulator to 5V.
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The green LED on the RJ45 port light on when the electronic on the board is powered, using the on-board DC to DC buck regulator to 5V.
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The optional green LED on the center of the board blinks upon DMX512 traffic from the XLR port to RJ45.
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The blue LED on the center of the board blinks upon DMX512 traffic from the XLR port to RJ45.
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The optional red LED on the center of the board blinks upon DMX512 traffic from the RJ45 port to XLR, but this should never happen (it's only for custom mods).
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The red LED on the center of the board blinks upon RDM traffic from the RJ45 port to XLR.
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The green LED in the corner of the board turns on when RDM support is active.
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The board can be mounted in waterproof enclosures (for [sonoff](https://www.sonoffegypt.com/products/sonoff-ip66-waterproof-case) or generic [100x68x50 mm](https://www.aliexpress.com/item/1005005622148025.html)).
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The board can be mounted in waterproof enclosures (for [sonoff](https://www.sonoffegypt.com/products/sonoff-ip66-waterproof-case) or generic [100x68x50 mm](https://www.aliexpress.com/item/1005005622148025.html)).
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You can drill holes on the side of the box to get access to the XLR and barrel port.
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You can drill holes on the side of the box to get access to the XLR and barrel port.
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@ -54,8 +77,3 @@ This will not be waterproof anymore though.
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Instead, you can put the corresponding cables through waterproof glands (not large enough for connectors), and connect the individual wires to the spring terminals (mark VIN, DMX IN, and DMX OUT).
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Instead, you can put the corresponding cables through waterproof glands (not large enough for connectors), and connect the individual wires to the spring terminals (mark VIN, DMX IN, and DMX OUT).
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Similarly, there are string terminal for the RJ45 wires.
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Similarly, there are string terminal for the RJ45 wires.
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The terminals match the 8P8C pin numbers, and the wire colors are indicated in the bottom.
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The terminals match the 8P8C pin numbers, and the wire colors are indicated in the bottom.
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limitations
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===========
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The DMX splitter is not RDM compatible.
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