Simple to do and not too expensive.
Less than 200.00 total invested.
Yeah, it's a small barrel but I live on the ranch and check it almost daily.
I love when I am hunting ferals at night and watching a coon climb up the post, then touch the cage and drop off!
It is uniquely satisfying.
I keep cuff traps baited and loaded most of the time also - you can see them at the base of the two left legs in pic.
The plastic barrel makes a nice insulator.
The cage is made out of wire from homedepot and screwed to bottom of barrel with sheet metal screws.
The solar/battery electric fence charger came from tractor supply and ran about 100.00.
I ran the ground directly to all 3 legs and hot wire to cage - if you forget to turn it off before touching cage, believe me, it will remind you!
Also note the T-posts driven into the ground parallel to the feeder posts so the feral pigs or my cattle won't push the legs out and drop feeder on ground.
This feeder has been in place over two years so far and has held up really well.
I just add corn and change timer settings and don't worry about the critters anymore.
I also like the larger metal box that contains the motor/timer/battery as I can install a larger 7ah 6V battery that will run for weeks without sun.
It's simple, cheap and it works.
Here you go, hope it helps someone.