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The Twinkly system is an expensive, but unique system of LED strings that can be installed and then pixel-mapped with a phone camera.

Kip Hakes sent me some dead PCBs from a string of festoon style bulbs that had an issue with water ingress.

https://youtu.be/-gCIvd0XwuA

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Fixing Twinkly festoon issues - interesting power and data system

Twinkly is a prominent brand of addressable LED lights that can be used with simple controllers or pixel mapped with a phone camera. The data to the LEDs is transferred along just two power wires, which is quite an engineering feat, given how fast they can be refreshed. Thank you to Kip Hakes for the donation of his faulty PCBs. If you have the Twinkly festoon (a cable with "bulbs" dotted along it) then it's worth checking to make sure that water is not getting into the caps. It appears that there has been an issue with the O-ring being a fraction too small, resulting in water ingress through thermal cycling and capillary wicking. If any PCBs have been damaged then they may be replaced under warranty, and will often come with a set of new o-rings. You have to tell your supplier the bulb number as they have fixed addresses. If they're out of warranty or not covered then you may be able to repair them as detailed in the video. A toothbrush and some isopropyl alcohol removes the corrosion to allow easier testing. I'd also be tempted to paint on a conformal coating like a suitable electronics grade varnish to protect the components against water ingress. A smear of vaseline or grease might also be a useful alternative. The technology behind the Twinkly lights is quite unusual with the two wire power/data, and the camera pixel mapping software. At this point I don't think the usual suspects have managed to match their system for features. If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty. #ElectronicsCreators

Comments

Chris

Julian had a 2 wire RGB LED several years ago and could not find the protocol or definition. https://m.youtube.com/watch?v=WLXnCaXX7w4

Keith W

If they all have their own unique address, does this mean if a PCB dies and has to be replaced, they can't just plug another one in, they have to replace the faulty light with a new one that has the exact same address?

bigclive

They have to get the correct PCB for the lights position on the festoon. They seem to be supplied preprogrammed.