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LED and wiring help :D Answered

I am planning on making a small plant grow light for a locker but could use some assistance with some electrical components and wiring. I wanted to run a fair some of LEDs off of a battery to help grow a plant in an otherwise enclosed space. I need to find an appropriate arrangement so that I am not changing batteries all the time. I would also like the lights to turn on and off every 12 or so hours. How would I go about setting up the LEDs but even more than that how and what would I use to set up a battery powered timer?


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