# RS485 hardware for DMX
**URL:** https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163
**Category:** Hardware
**Created:** [6 November 2022 12:44 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163 "2022-11-06T12:44:30Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@JAComms](https://discourse.nodered.org/u/JAComms)
#### Post date: [6 November 2022 12:44 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/1 "2022-11-06T12:44:30Z")
Hi all,
It is quite common on the Raspberry Pi to use RS485 hardware for DMX output.
I have done a node search but with no luck (so far anyway)
.
Dose anyone know of such a node???
.
Justin
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [6 November 2022 13:31 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/2 "2022-11-06T13:31:21Z")
> [@JAComms](#):
>
> It is quite common on the Raspberry Pi to use RS485 hardware for DMX output.
How is that done?
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### Author:  [@EI9HEB](https://discourse.nodered.org/u/EI9HEB)
#### Post date: [6 November 2022 16:56 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/3 "2022-11-06T16:56:24Z")
RS485 is a hardware solution.
Basically, it is nothing else than RS232 but in a different electrical configuration.
Typical RS232 uses one line for RX and one line for TX and ground.
RS485 uses a balanced line for TX nad RX.
You won't find the node for it.
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [6 November 2022 18:01 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/4 "2022-11-06T18:01:00Z")
RS485 isn't a problem, you can get usb/RS485 dongles. DMX uses different timings doesn't it? I assumed that was the problem here.
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### Author:  [@JAComms](https://discourse.nodered.org/u/JAComms)
#### Post date: [7 November 2022 07:07 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/5 "2022-11-07T07:07:42Z")
Here are a few links of hardware/hats used by different projects.
> **[DMX interface for Raspberry pi](https://bitwizard.nl/shop/DMX-interface-for-Raspberry-pi)**
>
> Addon board for the raspberry pi that allows you to interface with DMX networks. Designed and developed in cooperation with Arjan van Vught. Works with Raspberry Pi, Raspberry Pi 2, Raspberry Pi 3 & Raspberry Pi Zero.
>
> This normally allows you to...
> **[How to Use DMX512 / RDM With Raspberry Pi](https://www.instructables.com/How-to-Use-DMX512-RDM-With-Raspberry-Pi/)**
>
> How to Use DMX512 / RDM With Raspberry Pi: The Raspberry Pi can be used for lighting controls via DMX512 bus. In DMX512 bus systems RS-485 is used as the physical layer. Our RS422 / RS485 Serial HAT is a fully galvanic isolated serial communication...
[https://www.qlcplus.org/forum/viewtopic.php?t=14581](https://www.qlcplus.org/forum/viewtopic.php?t=14581)
So DMX is only RS485 @ 250K baud .... more info here..
> **[DMX Explained; DMX512 and RS-485 Protocol Detail for Lighting Applications](https://community.element14.com/technologies/open-source-hardware/b/blog/posts/dmx-explained-dmx512-and-rs-485-protocol-detail-for-lighting-applications)**
>
> IntroductionThe Digital Multiplex (DMX) protocol (not the rapper : ), also known as DMX512 or DMX512-A, is an industry-standard method of achieving lighting control, both manually (using a control panel) and for lighting automation (using a PC). It...
Id love to throw a Node together for the community, but im not that skilled with Node JS
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [7 November 2022 07:34 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/6 "2022-11-07T07:34:31Z")
If you search for DMX in the node red flows site there are a number of hits. Are any of those helpful in your application?
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### Author:  [@JAComms](https://discourse.nodered.org/u/JAComms)
#### Post date: [9 November 2022 11:35 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/7 "2022-11-09T11:35:29Z")
I have been using ArtNet nodes for DMX for many years .... I was just hoping a library/node would be hidden away and I may of missed it
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [8 January 2023 11:36 UTC](https://discourse.nodered.org/t/rs485-hardware-for-dmx/70163/8 "2023-01-08T11:36:28Z")
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