Some while back as part of the work on the Winchester Railway Modellers Redbridge Wharf layout we decided to add smoke and steam effects to a model of a TID tug. After a bit of research we harked upon cheapo piezo electric mister units as used in humidifiers. These can be obtained in various sizes and with various control boards from all the normal sources.
The unit we settled on was a 16mm disc connected to a control board that takes a 5v input.
This was r
