I have a project where I have 3mm LED COB strip from BTS lighting in 24v running using 18 AWG wires. The strip comes in 5m each and I soldered together 3 of them to see how bad are they with the voltage drop. As expected it slightly dimmer after the first 5m and it is very noticeable after 10m. I was wondering what are the best ways to inject power to the strip? Being 3mm wide, they only have copper pads on the bottom. Will it be a good idea to run a power cable along side the strip and have a 3 way wago style connectors for each power injection break? Ie one source, one for the strip and one to carry down for further injection?

I need a strip which is just under 27meter long and I can have a main split (where the power source is) after the first 6 meters. I did look at power injection from the back, obviously it will need to end at the first 10m, maybe stretching it if I split the entire length into two, where both strips gets power injections via the back and sacrifice some dimless in the middle?

I found a very informative post in the home assistant community where OP had kindly posted his solution, but my existing wiring is the other UK type where is the one on the left instead of the right on his post (https://www.downlights.co.uk/media/FAQs/wiring-example-2-way-switches.jpg)

I like to install the shelly dimmer gen 4 where I am a bit confused how to wire it. I had searched for hours online and I haven't come across a solution yet.

Ideally I would actually like to put the Shelly controller behind the ceiling rose due to the limited space I have as I actually have two two way switches on the same light switch panel.

Any advice or directions will be much appreciated. Thank you!

https://preview.redd.it/v0l7lzcd819h1.png?width=475&format=png&auto=webp&s=e4c2cb9d7dc0899317510560c97b8362eeb7bd3a

https://preview.redd.it/dk0mwgcf819h1.png?width=336&format=png&auto=webp&s=21587d1074a08b5bfe56c9b9daaa7290678d508f

I am trying to do a project for the lounge where I just like to have a single colour dimmable 3000k LED strip, I came across this device on Ali where it combines the driver and controller in one. According to the description it supports CCT and Single colour. Sorry for the dumb question but where do I actually wire the positive and negative wire here on the right of the diagram? is it 2 (V+) and 3 (Y-)?

https://www.aliexpress.com/item/1005009541495689.htm

https://preview.redd.it/efge22g4o36h1.png?width=897&format=png&auto=webp&s=1e321a1bfdc90b2c2a1fcb34f6a27987179cd65a

https://preview.redd.it/3x4drys4o36h1.png?width=900&format=png&auto=webp&s=bbc4898100d7f2a5b319865e5d7bb7ee6a537608

https://preview.redd.it/mf1kxnuk5o4h1.png?width=1287&format=png&auto=webp&s=2228d8baee69871c83fd0ae2cb5faf4fe36f1ace

Not sure eBay purposely do this so reviews on members are higher because we can only provide positive or you simply don't provide any so any neutral or negative gets excluded.

I have to say I had been using it for a while and it seems pretty good. But I just came across a situation today. Basically the postie said to me the system is down so he can't collect my item. The buyer had messaged me that they like it promptly so I am planning to go to the post office and send it instead. However I realised I don't have the QR code where I can show at the post office so they can generate a label. So I decided to cancel the label but ebay website said I can't.

I don't have an access to a printer at home at the moment, so I can't print the full label out and simply send it. So I am kinda stuck at this limbo where I now booked for a collection on Monday, hoping they can sort it out by then.

I messaged the buyer giving them the option to cancel the purchase and buy it again so I can simply generate a QR code for it,

Does anyone have any other ways or experience in dealing with this?