水草情迷

師兄我想請問吓如果我只想整兩粒 LED 嚟做 moon light, 我應該要點做? (我無任何電子學 related exp.)
我所知一粒 LED 係3w, 咁如果用兩粒 LED, 咁我要用幾多粒電阻? 要幾多Ω? 其實我想用一啲太陽能電嚟推, 咁就唔駛用 DC.
因為我見有啲太陽能電池輸出電壓有 : 4.5V / 5.4V / 6.4V / 9V
輸出電流：1A（最大）
輸出功率：3W

咁其實有冇可能做得到?

What is LED moon light? Seems interesting.

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倒錢落咸水海中

hm.... looking pictures are better than explain. Look below pictures.
It's only using at night to provide a little bit of light for those fishes.

Recently, those products are required to use AC power, that's why I'm thinking whether it is possible to make one by using DC (solor battery).