Solar Charger With Day Night Switch




Introduction: Solar Charger With Day Night Switch

About: Crafter, Builder, tinker, potter tailor .... Na just a guy that loves to make things especially if it means making a difference to the world and my impact on it

Well this is my first attempt a building a self contained system ... one small step to getting off the grid.
What I have done is to link up a 15w, 1.2 A solar pannel to 2 by 7.2 AH batteries. This I run trough a controller that charges the batteries during the day and then runs the lights at night. I also use the system to power my hydroponic system.

The panel is 26v so I had to run it though a voltage regulator to drop it to 14v. then the day night system I got from another site(check it out here). it is very simple and works well, I did try to use a few commercial ones but they did not handle the load. at night the relay switches off and I get direct feed from the batteries to the LED's. I have split the the LED's into 2 systems. One is the 12v wich are the mini flood lights and then 3.3 volts that drive the night lights in our house and the lights all under the roof.

So far day 3 and the system is stable ... using about 30% of the total bat power over 10 night hours .... let see how the system handles.

oh forgot to add so far I am running 86 5mm ultra bright LED's rated at 3.3V, 10MA

Will keep you in touch on this one.

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Be the First to Share


    • Backyard Contest

      Backyard Contest
    • Silly Hats Speed Challenge

      Silly Hats Speed Challenge
    • Arduino Contest 2020

      Arduino Contest 2020



    5 years ago

    I'm a bit curious, how well / efficient does the system run now?