This is somewhat updated version, with bits here and there
Melt a hole in body of bottle and pull trough it hose for fert container
Melt edge of plastic bottle sits on and make a rim to make it harder for bottle to slip off...
... and close the hatch
I have put full batteries on 9 min setting to see how much it can last.
Now all we need is some DC power adapter or something. Can anyone handle this, im bad at electronics?