Holiday Lights and Laser Dangers

John Huntington’s Blog has covered a lot of holiday light displays over the years. Brooklyn’s Holiday Light Spectacular is the newest one covered on the blog. It tells about Holiday Light Spectacular display with nice pictures, and also gives details on technology behind the display.

If you want to do your own holiday light display then here are some links to interesting project ideas from around Internet: Control your holiday lights with a magic wand circuit allows you to turn on your holiday bulbs with a wave of the magic wand. DIY Christmas Light Suit project uses LabVIEW to perform sound analysis of a playing music and uses LabVIEW Interface for Arduino (LIFA) to drive various Christmas light strings based on the power level at various frequency ranges. Smart Christmas Tree Lights with JenNet-IP video plays with the idea that “What if every Christmas tree light had an Internet address?”. Don’t forget my older Christmas Lights blog postings.


Light shows are nice to watch, but the technology used in them be can dangerous. Blink-182′s Mark Hoppus’ Retina Damaged by a Show Laser posting tells about the potential dangers of light displays that involve powerful lasers. In video Mark Hoppus Presents: The World’s Most Powerful Touring Laser Blink-182‘s bassist and singer Mark Hoppus talks about how he suffered retinal damage during a show in Milwaukee. In the video, he does a pretty good job of explaining how the laser show process works in terms of protecting the audience and what went wrong in performance. That show used a very powerful 26W Lightwave Lightwave Prism Series laser show equipment (you have read right, that’s watts, NOT milliwatts you normally see in most laser specifications).


Remember that this kind of laser damage to eye is usually permanent. Primary personal hazards of high-power laser exposure are skin burns, blind spots when the laser strikes the retina, and the worst case total blindness. Lasers have been coming back into vogue in recent years on touring concerts, so be careful if you happen to be near them or operate them. Remember Laser Safety. There is also a a growing concern over the increased potential risk of eye damage from high power LEDs as well because intense blue light can cause damage to the retina. Do not stare at lasers or very high brightness LEDs, because doing so may cause permanent damage to your eyes. Remember that lasers can also damage cameras and camcorders, and even video projector chips (DLP).


  1. Tomi Engdahl says:

    LASER Magic – Its a Lightsaber! Impossible Science w Applied Physics – Jason Latimer

  2. celebrities jacket says:

    interesting article man I really I like your article

  3. Tomi Engdahl says:

    Laser Galvo Clock
    Clock projected onto the wall with cheap laser galvos

  4. Tomi Engdahl says:

    Crappy Christmas “Laser Shower” projector teardown

    A look at a cheap laser Christmas projector, with a mystery unnecessary chip on the PCB.

    Inside a laser star effect projector and mods.

    These effects aren’t new, but I thought it was time to take a look at a current model and see what it’s like inside.
    I’d also noticed that versions are being done for outdoor garden use, and I must admit that when fired up into a tree it’s an impressive effect. Like a 3D sea of fairy lights in the tree.
    Of course, whether you should be firing lasers at planes and wildlife is debatable, but the divergence and splitting of the laser beam is probably enough to limit the risk of any issues.

  5. Tomi Engdahl says:

    Laser Show @ Euforia festival 2016 Boszkowo [4K]

    WOW, Audience scanning

    Once you seen one or two of these they all look TOTALLY BORING. This one does have a bit more to it

  6. Tomi Engdahl says:

    IQ RGB Lasershow Lindsey Stirling (Crystallize)

    My first small Lasershow with two Lightmaxx IQ 1 Watt Laser and Pangolin Quickshow with DMX

  7. Tomi Engdahl says:

    Limitless – 2013 1st Place International Award Winning Laser Show

    Winner of the 1st place ILDA award for the Multiple Projectors Beams and Atmospherics Laser Show category.

  8. Tomi Engdahl says:

    Outmar electronic 2018 lighting show

    Light show Visual Studio

  9. Tomi Engdahl says:

    Night club lighting show– DAGE Lights 7r beam moving head

    Nightclub in Mexico (Strana Guadalajara)

  10. Tomi Engdahl says:

    Laser Show – Armin Van Buuren (Mirage) – Pangolin and ECS

    Laser show made using Pangolin Quickshow by Emile Chauvin

    Show lumineux Laser multicouleur et Lyres beam 7r

  11. Tomi Engdahl says:

    3rd Place International Award Winning Laser Show – Arrived In Flames (2014 ILDA Artistic Award)

    This show was made to be the start of an event, or to introduce a CEO for a corporate event. The theme for the show is a person reaching their breaking point. Starting by holding themselves back, and staying passive. Until they internally breakdown and they finally loose it. However reaching peace with themselves by the end.

  12. Tomi Engdahl says:

    Madis – Carrying The Fire (Laser Harp Live Performance)

  13. Tomi Engdahl says:

    LEGENDARY 1933 CLUB 2016 lightingshow

    LEGENDARY 1933 CLUB,china,guangdong,xinxing,

  14. Tomi Engdahl says:

    Laser Show using Pangolin Beyond, CamelPhat – Trip

    Show built with Beyond timeline and all custom cues.
    2 x 2.3 Watt RGB lasers

  15. Tomi Engdahl says:

    “New” Laser Brite 2, Compact 3 watt RGB ILDA Laser Projector / Demonstration

    3 watt RGB Compact ILDA DMX 512, sound activated Laser Light Show projection system.

    Animation Laser Light 12W 15W 20W RGB Supplier China

  16. Tomi Engdahl says:

    New ministar pro RGB3000mW 637nm red DT40 scanners perfect animation and beam system for 1450 usd

    laserworld pro 1600 RGB 3D test video

  17. Tomi Engdahl says:

    Laser show demonstration over a lake somewhere in Bavaria | Laserworld

    The Biggest Show On Earth | Laser Display Lights in Dubai

  18. Tomi Engdahl says:

    Freestyler DMX – Light4me Smart spot 60 + Smart beam 60.

    Encoded (Hardwell)- DEMO impianto -Francisci Palchi

  19. Tomi Engdahl says:

    ILDA Awards 2013 – 4th Place Single Scanner Beam Show
    Lunaphase Lasers

    ILDA Awards 2013 – 4th Place Single Scanner Beam Show

  20. Tomi Engdahl says:

    Alan Walker – Faded (Live Performance)

    Alan Walker – Alone (Live Performance)

  21. Tomi Engdahl says:

    Guangzhou Hongri XHR High Power RGB Laser Light,Outdoor Landmark Laser Projector

  22. Tomi Engdahl says:

    What’s inside the World’s smallest laser show?

  23. Tomi Engdahl says:

    Visiting the Clay Paky Factory to See the New Xtylos Laser-Powered Fixture

    Clay Paky’s world headquarters and manufacturing facility in the heart of Italy is responsible for developing and producing some of the most iconic and forward-thinking fixtures and lighting technologies in the world.

  24. Tomi Engdahl says:

    Laser show in Disney California for “Tron Legacy” movie release

    Laser performance for ElecTRONica show in Disney California

  25. Tomi Engdahl says:

    Laserface by Gareth Emery | Seattle WaMu 2019 (Full Set LIVE)

  26. Tomi Engdahl says:


  27. Tomi Engdahl says:

    Laserbeam-Figures © GPL3+
    This instruction will show you a simple construction to use a controlled laser beam for projecting nice figures on a wall.

  28. Tomi Engdahl says:

    This drone swarm releases smoke in the sky to reflect laser light, creating “the largest 3D display you have ever seen.”

    Drone Swarm Generates Smoke Screen for Huge Laser Displays

  29. Tomi Engdahl says:

    Remember dangers of CO2 smoke effect used in some laser and light shows:

    Three dead after dry ice thrown into swimming pool during Instagram influencer’s birthday party

    About 25kg of frozen carbon dioxide tipped into pool to impress guests with ‘visual effect’

    Three people have been killed after dry ice was poured into a swimming pool during a birthday party in Moscow.

    Several people were injured during the stunt.

    Dry ice, which is frozen carbon dioxide, produces a heavy vapour when put into water.

    the vapour can cause an elevated level of carbon dioxide in blood when released in an inadequately ventilated space.

  30. Tomi Engdahl says:

    Arduino + laser module + couple cellphone vibration motors = THIS!

    Laser Show Motor Controller © MIT

    Create a fun little laser show with a cheap laser module and some old cell phone vibration motors!


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