https://web.archive.org/web/20080830100826/http://www.quantumpicture.com/Fl= o_Control/flo_control.htm On Tue, May 30, 2017 at 7:41 AM, Sean Breheny wrote: > Bob or anyone else who could help, > > I remember Bob designing a very clever cat door which would only open for > his cat and even then only when it was NOT carrying prey into the house. = I > was trying to describe it to someone and I could no longer find any web > page which describes it. Is the link still available? Even if it isn't > still up, at least having the original link would help me to try the > internet archive. > > Thanks, > > Sean > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 KPL --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .