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  • JakubB10 commented on Dipankar's instructable GUIDE TO LED PROJECTS3 weeks ago
    GUIDE TO LED PROJECTS

    Hello, i have a question about connecting 1W, 350mA leds to a power bank.I was wondering if i could connect 7 1W, 350mA 3.2-3.6V Leds to this powerbank,http://files.xiaomi-mi.com/files/power_bank_20000/...and what would be the best way to do it?I think i should connect them parallel, and add resistor, but i dont know which DC output i need to consider for this? It says it is 5.1V, 2.1A(3.6A max), but battery is 3.6V.7x350 is 2,450, but if i connect them either way, each led will get 300mA and should work just fine but dimmer?But i need help with figuring out the voltage, and what resistor if any to use.

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  • JakubB10 commented on Akin Yildiz's instructable an even "cooler" LED grow light7 months ago
    an even "cooler" LED grow light

    Finally, after few months of waiting for parts, rebuying good parts instead of wrong ones, one or a few resolderings of leds, this Project is complete. Big Thank You to Akin Yildiz, who made this great guide, and hand on hand guiding me through problems, i am now happy, and girlfriends is happy, thank you Akin :)

    Actually the frame was bought long time ago by my girlfriend, and since we didnt have enough light in our apartment to grow anything in it, it layed useless for some time.

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  • JakubB10 commented on Akin Yildiz's instructable an even "cooler" LED grow light8 months ago
    an even "cooler" LED grow light

    Well, something is wrong, cause i plugged it in, and it doesn't light up. I have 42.6V on each module, and between main + and -What could be wrong?

    Every thing is clear :) I will try to upload my photos today after i finish

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  • JakubB10 commented on Akin Yildiz's instructable an even "cooler" LED grow light8 months ago
    an even "cooler" LED grow light

    i mean i have 2 hangers and on one hanger there are gonna be 2 modules (5Wx2)

    Hey akin, i have last question before my project is complete. how would you wire this 4 modules? parallel or in a series? my driver is 20-40V and 900mA suitable form30W. Leds are 1W each. i want to ideallymhave 2x2 modules because they each will have their own hanger

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