Thanks, Elaine. I used to answer that phone at the Help Desk! I also used to be co-manager of the Master Gardeners' greenhouse at Zilker Botanical Garden. I just figured there was fresher info from folks here that had already experienced installing them.
After reading up on the micro-sprinklers, I realized that what I really needed was something that would water higher to reach the leaves on my spider mite-prone brugmansias. DH came up with some "prototype" sprinklers that I can move around until I find the right spots and the right sprinkler heads. Last week, we had other things get in the way, so I'm going to post my practice sprinklers now. Once I figure out where I want them, DH will camouflage them in the beds. Then he'll use a 5 ft piece of hose on each one with a quick-connect that hangs out of the flower bed so I don't have to tear up the beds to get to the hose to move it to another sprinkler. That's the plan at present. I only need a few to get the spots the in-ground sprinklers don't catch. When we figure it out, we can hopefully put them on a timer.
DH also found an old Rainbird that he tried as a sprinkler base. I like it really well because I can place it, time the sprinkler, then just roll it down the side bed. Still working on the sprinkler head selections and the height of the pipes.
The base is in concrete. Not sure what he'll use for the next ones (but won' be tin cans).
I love that the pipe can be as high as I want it.
It will be nice not to have to move pots around on watering day to reach a sprinkler.