On Thu, 30 Aug 2018 at 17:46, Harold Hallikainen wrote: > I have a hub here that I use all the time with Wire Shark. Sometimes I > need to help someone debug something in the field, and they don't have a > hub, and they are getting hard to come by. > Using dnly Inverse parallel pairs of diodes between Wire 3 to wire 1 of other cables Wire 2 to wire 6 of other cables 24 diodes So diode pairs from A1 to B3 & C3 B1 to A3 & C3 C1 to A3 & B3 A2 to B6 & C6 B2 to A6 & C6 C2 to A6 & B6 Here: http://www.zen22142.zen.co.uk/Circuits/Interface/pethhub.htm Russell --=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 .