After buying the hose in Kips, I managed to find small diameter tubing and droppers in Zozeta, in Igalo (the north side of Herceg Novi, on the road to the border crossing with Croatia). I also found a timer valve unit at Okov in Radanovici, on the main road from Tivat to Budva. The Cellfast timer (from Poland) allows one or two sessions of watering a day, of between 1 and 99 minutes at times one can set, so highly variable. It also allows a choice of which days of the week one wants the system to operate. That allowed me to install the first part of the system, on our top terrace, where all the plants are in pots.
Okov also stocks another brand of timer, made by Cleber of Italy. At about the same price, it is far less flexible in the selection of times. unlike the Cellfast model, one is restricted to 12 choices, from
I completed this in October 2018, shortly before we went to UK for a fairly lengthy period. Previously we would have had to get one of our team of ladies to come in regularly to water the plants. This installation saved all that. To our great relief, on our return some 10 weeks later, we found all the plants still alive! System worked.