Im currently making pixel art by arranging simple blocks on a grid.

Mostly i do this by duplicating and moving, but it would be so much easier if i could just stamp it, because its always the ame object im using.
(i know that you can stamp with the space bar, but i dont like it)

I tried setting all parameters to their minimum values, but that does not seem to spray just one object.
Instead it sprays the object some times and sometimes not.

Am i missing something ?

Using Tiled Clones, you could create an array of a solid block of blocks. Then you could convert to paths, delete the ones you don't need, and change the color of the ones that are left.

Other than that, I can't think of any other way.

I guess the purpose of the Spray Tool is to randomly create objects, although it would have been a nice "joy ride" to use it as a stamp.

The idea of doing pixel art with a grid of cloned blocks isnt too bad.
Will give that a try.

Why doesn't the current way of stamping work for you? I can't remember how to do it, at the moment. But whatever it is, why doesn't it work for you?