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I went ahead and took a chance and thank you Russel as your suggestion worked! Turns on only when I cover up the sensor and turns off when there is light to the sensor, exactly what we want. I understand what I did wrong as my previous wiring diagram was essentially bypassing the sensor, not what we wanted. Thank you again.
That is my own post. XD. That did not work but I solved that problem with my controller as you see above amazon link for that. It actually works very well. However, that link above tries to solve the problem of controlling the motor, not activating it only at night issue that I have now. So no that does not solve my issue Solar Mike.
How would that be wired? What about the "charge controller"? Do I need another charge controller going from the car battery to the buck converter? Can you explain more possibly? What replay would be sufficient for this project and can I get it at more local hardware store? Is there any other concerns with our plan? Like I said, were completely new basically.
Well, the only problem with my project is power. I need 6A and 7.4 volts of power. I have a thread on the arduino stack exchange explaining the circuit of all the parts and what power I need. Here that forum: arduino.stackexchange.com/questions/34768/… So since the only problem is power, could I do what mkeith suggested, which is put both packs in series and then hook the 2 packs in parallel? I will have a guy from radio shack who has years of running arduino and circuits. He is the only expert I know. He has even built a 3d printer with the arduino.
