Jump to content

djgeorgef

Regular Members
  • Posts

    24
  • Joined

  • Last visited

Previous Fields

  • Member Status
    Amateur theatre practitioner
  • Current Employment or place of study
    Electrical engineer
  • Full Name
    George

Profile Information

  • Location
    Somerset

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

djgeorgef's Achievements

Part-timer

Part-timer (5/14)

  • Dedicated Rare
  • Reacting Well Rare
  • First Post
  • Collaborator
  • Conversation Starter

Recent Badges

  1. I’m interested in a enttec usb pro to replace my trusty one that I had for many years but sadly gave up recently. Please message me and hopefully we can come to a deal. Thank you
  2. Thank you all, it’s been a great help.
  3. Thank you that’s very informative, we appear to have scenario 3 in our dimmer! By a fully isolated transmitter, would a DMX splitter with optical isolation suffice in your opinion.
  4. Yes it is, apparently it sacrifices itself to save the desk/computer in the event of a voltage spike! It looks as though Enttec will be able to refurbish it which is good
  5. Thank you, I found this really useful. At least 2 of the dimmer units are on different ring mains. I like the idea of the splitter and then run a DMX cable to each unit. At least if one goes down the rest should stay active. 👍🏻
  6. Thanks all for clarifying the cables so far, I’ve re-soldered the XLRs to keep pin 1 separate from the chassis. Had a quick look and am able to separate the mains earth and DMX ground quite easily in the units. Also I'm paranoid it’s going to happen again, would optical isolators help to reduce this and would I need one on the input and output of each unit or is that overkill. Also do you think it’ll be enough to keep the grounds and earths separate. Apologies, just to explain a little more, this is a setup over Xmas that I’ve been volunteered for for a local non profit organisation. I’m an electrician but when it comes to DMX I’m a plug and play kind of person with a basic understanding until it goes pop, and would like a set up we can just roll out and plug in every year. thanks again, really appreciate all the help
  7. Hi, thanks for the replies. So there are 2 cores and an overall braided shield. Pin 1 has one the overall braid/shield connected but The the shield is also soldered to the connector “earth” terminal in the xlr that goes to the xlr connector.
  8. Hi all, I’m just after some clarification on an issue I’m having with some DMX rgb dimmer packs please. It’s a very basic setup: computer > DMX dongle (enttec usb pro) > 3 x rgb dimmer units (24vdc) 5m apart running some rgb floodlights. so the story goes…..all working lovely until a random rcd went somewhere else in the venue unrelated to the lighting setup, but on the same distro board (probably a toaster or something!!)! This resulted in 1 of the dimmer packs failing and also the enttec DMX dongle failing. Obviously very annoying!! After looking into it, pin 1 on the DMX dimmer pack is also connected to the metal chassis inside the rgb units and hence earthed! So my theory is a spike on the earth found it’s way through to the ground on the DMX and blew the comms chip in unit and dongle? So my questions are: 1. Does this sound plausible? No faults found on any of the 24v circuits. 2. I’m assuming that the mains earth should be open circuit from the DMX ground on pin 1. Hence a badly designed/made rgb unit 3. I’ve also noticed the DMX cables (qtx brand) have the shields link to pin 1 in the xlr connectors. I’ve read that the shields should be separated from pin 1 also but quite contradicting depend on various posts I’ve obvious got a niggly one here, sorry there’s a lot there but trying to future/idiot proof this so it doesn't happen again! I’m also looking into optical isolators also. Any advice would be greatfully received. Thank you in advance.
  9. I've not tried it yet but having this highly recommended I have purchased one: https://cpc.farnell.com/sunpower/dmxdim/DMX-input-dimming-controller/dp/PW03890?ost=dmxdim
  10. I’m looking to purchase dumb RGB dimmer controllers/boards, DMX controlled and approx 4A per channel. Preferably not cheap amazon or Ali boards. 24+ channels and 24vDC output. Thanks in advance
  11. djgeorgef

    Co2 cannons

    Hi, I’m in the market for some Co2 cannons/solenoids, preferably mains voltage, DMX not essential. 2 units required ideally, thanks in advance
  12. Has anyone got an enttec usb pro DMX interface they no longer use or need. If so, please message me and hopefully we can come to a deal?! Thanks in advance
  13. Afternoon,

    I was just wondering if you had the two Co2 jets available that you have advertised in the 'For Sale' Section of the Blue Room.

    Regards

    Ed

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.