Tag: Custom Lighting


Pixel Strobe Build

Today, we take a look back on one of our first product designs – the OPTO Pixel Strobe. We designed these originally for the Australian tour of ‘We Will Rock You’, back in 2015. Associate LD, Richard “R2” Pacholski, wanted to gain more control than the previous spec of star strobes which covered the set.


The primary brief was to provide the same brightness and randomness of the star strobes, but with the ability to run controlled effects such as wipes and chases when required.

Electronics Pixel Strobe

Light Housing

How did we manage it?

We had previously completed a custom strobe build for ‘Matilda the Musical’ which, to integrate as invisibly with the set as possible and to keep the size down, was a bare PCB for the strobe head.

For this new project, we wanted to create a fixture that could be used time and again and withstand the rigours of touring. We started with finding an existing aluminium housing that could be adapted to work with our own custom electronics. We settled on a solid shell that was an off the shelf product, rather than having our own design custom machined.


silk screen printing


Once we had the enclosure, we moved on to electronics and control. The biggest issue we faced was finding a connector type that was both small enough to fit within the unit, but also with a high enough current rating to take the power required for the strobes.

When all the components were selected we did a prototype run of the design to validate the electronics, before moving on to mass production of the PCB. A few minor tweaks later and we were away!




Assembly LinePixel Strobes

Next, we moved on to finalising a few details of the over all product design – a yoke and back plate were designed and fabricated to integrate with the existing housing, and it all began to take shape. A quick trip to the powder-coaters and screen printers, and we had a product ready for final assembly.

At this embryonic stage of OPTO Projects as a company, we often struggled to find spaces to work. With the company directors based in two different cities at the time, this resulted in garages and lounge rooms being converted into assembly lines! With a willing workforce of partners, family and friends, the last push to get them assembled, tested and out the door went smoothly.


What we learned

As with all our projects, there were many things learned along the way. The key requirement for projects such as this – consisting of an extensive bill of materials and processes, from a range of suppliers – was planning and scheduling. We had a detailed road map on how we needed to accomplish this right from the start. With the tight timeline available for delivery, it wouldn’t have been possible to complete without that strict scheduling and organisation.

Freight times are never your friend, so always ensure you allow for much more contingency than you’d think, and be prepared to pay a premium for express shipping if it means other processes won’t be delayed.

Lastly be sure to test, test and test again. The only path to reliable products is comprehensive internal and external testing.  Feel free to get in touch if you have an idea we might be able to design and deliver for you!

Small high brightness pixel strobe chain, for thatre film and events industry


White Night Reimagined

In this week’s ‘In The Spotlight’, we look at a recent build OPTO Projects completed for Balooga Entertainment, which was featured at White Night Reimagined in Melbourne last week. This project had a tight turnaround, but working alongside great clients with clear ideas always makes up for time otherwise lost.

You want us to do what!?

When Graeme Haddon from Balooga Entertainment approached us to deliver this project, the brief was quite simple – ‘internally light the Buddha puppet with even coverage and keep the weight down to reduce strain on the puppeteers’.

OK, and how exactly?

AutoCAD design

To help achieve the goals, we looked at a variety of options that would give even coverage within the confined space we had to work with. After doing multiple tests with different light sources we settled on good old LED tape. This solution allowed us to get into the tight spaces such as the fingers and forearms giving us fairly even coverage. The biggest concern with this was the pixelation that often occurs when LED tape is close to the diffusion material. Graeme offered an alternate foam material that the puppet could be manufactured out of which gave great diffusion and helped to alleviate this issue.
As Graeme wanted to have the ability for colour wipes and control of individual parts of the puppet, we settled on using our optoLED RGBW Pixel Tape. The pixel tape formed the main “glow” of the puppet and worked in conjunction with the optoLED Pixel Discs used in key areas which needed featured effects. The palms of the hands and the eyes utilised only a few of the inside rings of the Pixel Discs and the headphones just the outer few rings. This flexibility meant we could easily match the sizes needed.

For the heart, we ended up using a full optoLED pixel disc which could again be pixel mapped to give more dynamic effects to this central focal pint. Although the external foam worked well for most situations it did cause some slight head scratching with this element. To get any definition from the heart, we had to stand off the the disc from the back panel to bring it closer to the puppets outer shell, all without causing a shadow from the LED behind. We created a standoff with a custom 3D printed washer that allowed us to bolt the disc to the metal standoff, without causing a short, but also allowing the LEDs under the washer to not be impacted.

The 3D printer was also brought into action for the LED in the arms. We designed some brackets to snap-fit over the structural rods which then held the extrusion evenly spaced around the circumference of the limb. This also gave us the ability to build the LED outside of the arm and just insert and clip into place (which also helps for maintenance).

3d Printing

We got this!

To get all this pixel tape under control, we went with two LeDMX4 Pro units from DMX King. Their small form factor and versatility made them perfect for this job. They also have the ability to replay a pre-recorded show from an onboard SD card via an external trigger, which was desirable for the client.

We did it!

In the end, we were happy with the result and although at times she was seen as a little scary (as The Age put it -“it will kill us all”), what more could you want from a 3m high puppet with frickin’ LED beams for eyes!

If you’d like any further information on this or any other project then feel free to contact us.


white night buddha