Sure, I'll be glad to tell you about this very sophisticated
All I did was buy a roll of wicking material that is usually used for making candles. It is available at craft stores and is not very expensive, but I can't remember what I paid. The size is a little smaller round than a pencil. Then I put a gallon milk jug filled with water by each plant and run a piece of the wicking from the jug to the plant. I poke a hole in the soil and put in about 2" of the wicking and cover it with soil. If the plant is big I put in 2-4 wicking strands. My largest plants are in 20" pots, and this has worked up to 6 weeks with no problem, but the water was about to run out after that time.
Here's a few tips that I follow:
I always soak the wicking material for about 30 min. before using it. There have been times it didn't start wicking if I didn't do this.
I use the gallon milk jugs so that the water will last up to about 6 weeks. Also they have small openings so the water doesn't evaporate as quickly as it would in a bucket.
I make sure the wicking in the jug will reach all the way to the bottom for when the water gets lower.
The jugs should sit lower than the pots so that the water will wick up. Don't know why it has to be that way but it does seem to be true.
I set this up about 2-3 days before we leave just to be sure it is wicking. Then I refill the jugs to the top just before we leave.
I water the plants really well before leaving so that they won't need the water in the jugs until later.
I try to keep the plants and jugs out of direct sunlight to keep down the evaportaion.
When we return I rinse off the wicking, let it dry out, and use it again. Course it's cheap enough to just throw out and start over each time.
And that's all there is to it. Hope this info helps you.