When we moved in 12 years ago I righteously replaced almost all the overheads and pop-ups to the more "correct" drips. Drips is right! I have now replaced 90% of those drips back to overheads and pop-ups.... which, in my yard, are more efficient at getting more ground watered instead of creating a little cone of moisture while the rest of the soil turns to adobe. (Thank goodness I kept most of the old irrigation stuff so i didn't have to go out and buy it all again!)

I just inserted the little sprinkler immiters into my 1/2" tubing. I try to keep the plants located in the area that is covered by the spray. In my situation, each immiter sprays a circle 2-3 feet in diamater. I have the 1/2' tubing laid out about 7-8 feet apart. I also have the 1/4' tubing leading to plants/shrubs that are out of the spray area or that need more water. I have a 1/4 acre cottage garden, so I am dependent on this system to keep my plants alive.
Donna in Orland

I use the DIG drip irrigation system that is sold at HD. It has a wide variety of emitters, micro-sprinklers etc. that cover all needs. I have a wide range of plants and I'm quite happy with it.

Here is a link that might be useful: DIG

http://www.ag.ndsu.edu/pubs/ageng/irrigate/ae1243w.htm
It tells you about micro-emitters. I think you can use tubing and the micro emitters are not that obvious like sprinkers are.

Most drip emitters get plugged up with my hard water. I now use 1/2 inch tubing with emitters built in which plug up a lot less. I can add micro sprinklers any where I want by just tapping into the tubing. I have given up trying to find what I want from garden centers or home depot and buy from sprinkler supply companies. Al

+1 for micro spray.
http://www.ag.ndsu.edu/pubs/ageng/irrigate/ae1243w.htm
http://www.atsirrigation.com/microspraypage.htm
http://www.atsirrigation.com/fanJetsprinklers/fanjetsprinklers.htm

I use these from ATS with great success. I use them over mulched areas around my fruit trees where I need to get the mulch wet and have water run down through it so the mulch will decompose and the nutrients work their way into the soil.
They work well for ground cover. You will need to put them on a short stake sort of device that they also sell that will keep the spray above the ground cover. then the spray head goes on the end of a pre-made spaghetti tubing.
Start with 1/2 or 3/4 main feed tubing, to spaghetti with fitted end that snaps into the main tubing. These are sold in pre-made 18 inch lengths which work very well. Spaghetti then attaches to the stake and the fan micro fits on top the tubing, help up buy the stake.
You can also fit these onto rigid risers, and use buried PVC.

Hmm....I think the little black sprinklers that are infesting my landscaping are the same thing as these 'micro-sprinklers.' Basically I've gotten these sprinkler heads (which come in quarter-circle, half-circle, and full circle versions), which connect to the 1/4 inch spaghetti tubing, then the whole thing is supported by a 1-foot black plastic spike, which you stick in the ground (see link below). Basically, in order to get full coverage, I've ended up putting these all over the place.

Well...I think my next step before resorting to what westell did is to run some 1/4 inch drip tubing in spirals and zig-zags to see if that will keep everyone happy in the summer....we'll see!

Here is a link that might be useful: Micro sprinklers

The minisprinklers I use are designed to work with water with a high mineral content and not plug up. I tried the ones in your reference but could not keep them open. What I use now are imported from Israel and have names such as Eindor or Eintal and I get them from www.harmonyfarm.com. Al