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Thread: LUXEON SunPlus 35

  1. #1

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    Default LUXEON SunPlus 35

    Has anybody tried these? I can't seem to find a mention on here but my searchfu might be off. Can't even seem to find a growlight using them.

    The purples look very interesting. Been working on an LED board, 20cm/20cm. Nearly got it right for fabrication. 8 lines of purps and 2 lines of the samsung LM301H. Just need to find a switch so I can use only the samsung for seedlings. Maybe. Not sure if that is a good idea, might just go with full purps and have a switch to just use the middle 4 rows.



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  3. #2

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    Looks like they were only released the end of last year, guess it's too early.

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  5. #3

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    Decided against using the white Samsung LEDs or having a switch on the board. Thought if I do need some white light I can just add some extra, not sure I will need it but I have no idea really. Went with the 2.5% blue purple LEDs. Should run on 36v 1 amp~

    Ordered the LEDs, cost £0.40 a go for 110 just in case I break any. Never tried surface mount before so I should probably practise first. Now I just need to find somebody to make the board. Been using Kicad to design the board, it also does funny 3D renders. Took a good look at the invisible sun boards to see how they designed theirs. Now I just need to give it a cool name Purple Lake, Sunplus Purple, Deep Purple, 2020Purple, SunPlus2020

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  7. #4

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    Practice boards have arrived. £8 for three boards and all the components. Cheap as chips Also got my hot air gun so going to have a go today or tomorrow.




    Ordered the LED boards, cost £70 for 5 20cm/20cm boards but after shipping from China and tax it ended up being £150 total so £30 a board. The smallest run they would do is 5 boards but not a bad price. £70 total each including the LED's.

    When you can get a 24cm/24cm from invisible sun for £40 it's only worth doing if you enjoy electronics as a hobby. Just doing the one board for my cupboard atm but if I can get a 2ft/2ft tent I think the other 4 could work well in there. That's if they work
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  9. #5

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    Pair of tweezers & a decent soldering iron & you could have saved a hot air gun purchase
    It's Not What You Know, It's What You Can Prove

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  11. #6

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    I am sure it is possible but it seems a better idea with hot air and solder paste, think it will do a better job. I do have a soldering iron.

    The LED's have a footprint mostly under the LED so I am not sure how great a join / heatsink a soldering iron would do.

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  13. #7

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    The boards arrived Never got round to trying the other boards but I will get the motivation soon to practice. Then just 100 LED's to put on the board

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  15. #8

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    So I finally got the motivation to practice using the heat gun, turns out it is a piece of piss. Set the heat to 230c and the paste easily melted. Tried a few components then called it good.


    Then the problems started, it seems obvious now. The standard FR4 board is completely different to using an aluminium board. Doh. Obviously the heat sink will sink the heat! Cranked it up to 450c and still couldn't melt the solder paste. It was just taking away too much heat... Turns out the heat gun was a waste for aluminium boards, but I don't think an iron would have been any better.

    Luckily I have a pottery kiln so decided to try using that as a reflow oven. Went pretty successfully. All the resistors and LED's still work, took it up to around 240c as 260c is the max temp for the LED's. Now I know it works I can do the rest of the board after work. Looks a little messy but there's no shorts to ground. Just need to work on my paste application.



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  17. #9

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    What a fantastic project. The skills of the talk members never ceases to amaze me.

    I just blew up 3 QB 11 strips! You are building boards from scratch! Bonkers!
    Current Grow (3L coco autos) : Jumper's 2020 shenanigans

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  19. #10

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    Get yourself a hot plate, a component placer and you can call yourself visible sun or something like that.

    Seriously though good luck with the smd, its a ball ache but doable. I bet you end up with it on the cooker

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