Andy Shaw wrote: > > Hi Folks, > I'm trying to put together some sort of sensor to measure the amount of > water in a model sub ballast tank. The requirements are: Any chance you could measure the weight of the tank instead? More water - more weight etc. -- Best regards Tony ICmicro's http://www.picnpoke.com mailto:sales@picnpoke.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.