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Those amazon links just open up amazon and don't link to any product... JT

I'd run some 12-2 UL to the coop and be done with it. Dunno your location but if it freezes where you are a heater in the water bucket makes life much easier. JT

I'm a bit embarrassed with the condition of the control center. I've placed an order with the maintenance supervisor for a larger shelf but he keeps ignoring my requests and keeps building accoutrements for the 12 Cinnamon Queen chicks in the brooder. JT

My Coop Deux has a Rpi 3 with a 7" touch screen and USB speakers as well as Internet. Sounds like we both like to tinker. JT

I was speaking of the video with the photo cell and through beam and a DIN rail full of stuff... I admire your creativity with the 2 timers and yes it's very simple and straight forward. I didn't even know you could get Astronomical DIN rail timers, that does make it so much better. JT

That's some good information. So based on that you know the system uses about 250mAh in 24 hours plus how much energy it takes to open and close the door. A person just needs to know how much sun they get and size the solar panel and battery to suit their location. For me when it get...

How much power does the timers use? Do you have a link to that relay that only draws 5mA? JT

Link? JT

https://www.amazon.com/HiLetgo-Channel-OPTO-Isolated-Support-Trigger/dp/B00LW2G7V6 JT

You have an electro mechanical relay that draws only 10mA? JT

If you use a logic level relay they only draw 5mA as compared to an electro mechanical relay which usually draw 50mA to 100mA on the coil side. JT

@Mouthpear JT

Well 3 amps at 12 volts is 36 watts... for however long the door is moving. If the solar cell won't keep the battery charged then get a bigger one like a 25 watt solar panel. JT

I tried a photocell on mine and the first thunderstorm that came up had my chickens locked out in the rain... then there is the issue of trying to get a photocell to close at dusk and not before. On an overcast day the door will close too early. JT

Look closely at the relay to see what the current draw is or use a multi meter with a current setting to find out the current draw of the system. Then you will know how much watts you need. If the solar cell is not in the optimum position that can cause low power. JT

Yes, wire it so the timer and relay is off at night and no current will be flowing all night keeping the relay pulled in. JT

Even with power to the actuator once the limit switch is reached no current should flow. I assumed you just checked for voltage and not current? If you disconnect the battery from the actuator does it spark? This would indicate current is flowing. I'm guessing your using a 12v timer and a 12v...

The secret is when the timer is on the door moves to one position and when it's off it moves to the other position. JT

I must say I'm really impressed with your work on this door @Tsheaby and how well you have laid out the instructions. JT

Usually linear actuators have built in limit switches. JT