musht

https://github.com/Aircoookie/WLED/issues/1027 https://www.electronics-lab.com/6-wt32-eth01-is-a-tiny-esp32-board-with-ethernet/ ?

Also the Olimex PoE board, should support WLED https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware Lilygo, makers of TTgo boards make some intriguing ESP based boards http://www.lilygo.cn/

https://pytch.co.uk/knowledge/pytchair

Nope, read the link, beam is so fat that maximum exposure at retina , through small hole of your iris, is within safe limits. Ignoring the curtain twitching ?and you are like many others are planning for a house party when such things are possible obviously.... All in ones , until one bit gives up. Video projector as suggested and few of this sort of thing scattered around https://www.amazon.co.uk/OMERIL-Activated-Birthday-Gathering-Christmas/dp/B07CSPPXJY/ Lots of thin beams are LEDs, the laser has a 28mm beam diameter, bit of yellow green rope waving about, being a laser will stay same width for very long way, not .uch use in smaller room. Amazon item and similar have advantage of being wide angle, moving heads tend to be quite narrow angle. The revolving facets thing works well in multiples and from different positions, some remote plug in sockets for variety.Cheap video projector if your going to use fog, juice isn't kindto them. Blacklight,fluro, not LED unless spending loads the effect is much diminished https://www.amazon.co.uk/gp/aw/d/B003GSPBJS/ref=psdcmw_3764827031_t1_B07KCPJXG

Class 2M fat beam laser https://www.gov.uk/government/publications/laser-radiation-safety-advice/laser-radiation-safety-advice

Anything above Class 1 is a hazard, the items the OP mentioned are Class 3b not Class 4 https://www.gov.uk/government/publications/laser-radiation-safety-advice/laser-radiation-safety-advice Still toast your retina, with little black dots. Misunderstanding about laser eye damage, unlikely to turn you blind in an instant, what actually happens is knocks out bits of your vision, few cells of your retina get toasted bit like a projector with blank pixels,that `s from someone who had worked in a laser lab since the late 60`s when eye protection was considered less important. High power LEDs also represent a not insignificant risk of eye damage , especially short wavelength ones, no rush to ask for legislation there.

Lasers in small rooms can be simply painful, reflection of walls and ceiling may or may not be dangerous but it`s tiring. Projecting on to scrim adds to just beam effects , but you need a scrim and another chunk of change on control hardware and software. Bit like strobes, great effect , but needs to be used sparingly for impact. For the cash some mini moving heads or dedicated beam effects are going to give a better result most of the time. Lazerwurlde have a less than stellar reputation and you can take their power output ratings as being achieved with a pair of dice at the marketing stage. Specialist laser forum: https://www.photonlexicon.com/forums/

DMX King's LeDMX https://advancedeventdesigns.com/shopaed/index.php?route=product/product&path=101_105&product_id=131 Program the SD , DMX amongst trigger options. Deeper down rabbit hole http://www.awesomeledlist.com Crowd sourced, user editable, if see something missing, please add

Was it a previous incarnation of LeMaitre where the ex sales manager hired a burger van for catering the onsite liquidation sale.

Garden sprayer won't work, Screwfix have a similar model lot cheaper, liquid isn't compressible like air, it's why they test pressure vessels with water. Tyre inflators tiny piston pump, get pressure over time but no volume.

There`s more DMX stuff around than there was, ESP32 is programmable in Arduino environment https://learn.sparkfun.com/tutorials/sparkfun-esp32-DMX-to-led-shield/all Can modify a normal servo to continuous rotation, lose position feedback but its an easy way of getting a small reversible geared motor. Other drive possibility be arduino/esp with stepper motor and driver, A4988/TMC2130 etc even use a lead screw and nut rather than line and drum, parts like these are easy to find thanks to 3D printers.

1200W lamp was successor to the 2k back in the day. Additional collimator is going to help, something like https://www.ebay.co.uk/itm/28mm-Optical-Glass-Lens-Collimator-Plano-Convex-for-Led-Projector/251557561702?hash=item3a91ffc566:g:STUAAOSwo8hTmgyQ

mebbe try https://www.photonlexicon.com/forums/

That was a few years ago, when everyone rated their LEDs in cryogenic conditions ? This is an interesting reversal, underrun them will get efficacy up, there is plenty of air around them, but the power density is terrible,it's a big dim globe. 130/150 l/W not unusual with whopping heatsinks but more intense directional light.

200 lumens watt been available for a long time, 7 ,8 years ago it was the big headline number https://www.extremetech.com/electronics/143672-cree-releases-landmark-200-lumen-per-watt-led This thing is just underrun COBs in strips rather than as point source, which is where the dimness would show up, 200 lumens a watt is no real saving with no control over direction.

As a negative review I would say avoid anything "folding", I have got some Audio Technica ATH-M50 which are nice headphones They are very comfortable for extended period and the folding portability means get used more regularly. Been more robust than expected.

Surely must be Material Safety Data Sheets, MSDS, for the fluids?

"easier if they used premade CCTV cables. This would be a much simpler solution" Options are shotgun cable, it dosen`t coil or lay flat, even in install it needs odd shaped holes drilled. It`s not cheap and can be of variable quality, CCA :-( David mentioned scroller cable, try coiling it a few times, hit same issue with anything that is made with thick and thin cores, it has severe memory and turns into a slinky. Multi strand copper that dosen`t with decent flexible jacketing is going to cost and will still turn into a slinky. CAT5, 6 waste of time unless you have 24K/300FPS CCTV ;-) , is cheap and easy to install, easy to use a solid strand box as one time use on site. Use STP if need a stiffer ground. "some kind of breakout box at the camera" Have to break out power from a combined cable anyway. 20W buck convertor is slightly smaller than a box of matches, if required for the power draw. IP cams solve all the issues apart from lag :-(

Not sure which heading belonged under. As ever with auctions, check what something actually costs retail, set a price you would be prepared to pay , dinnae get carried away, there are likley to be quite a few similar coming along https://gjwisdom.co.uk/2020/07/on-auction-27th-august-2020-contents-of-3d-creations-ltd/

Still end up with back in the day shotgun cable, got to get power there as well. Pelco/PelcoD seems to be PTZ control standard see referred to a lot. DC:DC converters are everywhere,including couple in the camera housing probably, problems have with CCTV have been connector related , never power transmission related. Baluns similar, many types around including patch panels with the power split out, to this and up and down voltage if it is an issue: https://www.amazon.co.uk/VIMVIP-HD-CVI-Passive-Connector-Transmitter/dp/B06XCGZ3H5 There may be a certain amount of checking your morals at the door with some CCTV suppliers https://www.npr.org/2019/10/08/768150426/u-s-blacklists-chinese-tech-firms-over-treatment-of-uighurs

20 whole watts! your overthinking it, be fine down CAT5 with passive PoE adapters, have analogue CCTV here with the IR floods is pulling bit more than 20W at over 50M it isn`t an issue. 802.3 BT is probably limit of Cat5 at 100W out the switch, that uses all the pairs, building lighting is a thing if want to fully overcomplicate something, . It`s PoE++ that gets to 60W , PoE+ (802.3 AT) 30w, AF 15W https://www.black-box.de/en-de/page/23894/Resources/Technical-Resources/Black-Box-Explains/lan/PoE-in-Networking Passive PoE baluns for analogue CCTV put an tiny impedance matching trafo in the box. Passive PoE ethernet injectors dinnae have any balun trafo, just wired to spare pairs in the cable.

Guessing it's not IP, on stage use , lag may be an issue. 802.3BT is '100W' PoE, actually 72W delivered, at up to 56V.Switches are expensive. PoE + delivers 60W at lower cost. Mebbe use midspan injection and splitter to carry power and SD video.

What's wrong with PoE, got a IP PTZ camera at about 160ft on Cat5, uses PoE+, 60W delivered at lot less cost than the 100/72W delivered PoE stuff.

Philips Hamilton closed November last year, last factory making SOX anywhere. Used to have a Philips neon sign on side, neon starter gas in SOX. https://www.dailyrecord.co.uk/news/local-news/homes-plans-revealed-former-philips-21277620

optoisolated buffer, Stairville/random brand 4 way metal case one was genuinely isolated e2a even charge your phone https://www.thomann.de/gb/stairville_dmx_splitter_8_usb_5_pin.htm Tim or someone remeber the Pulsar input protection, couple of zeners or so to protect fom overvoltage?