In newer Domoticz versions it tries to ping the gw. If something is blocking this (like another controller) it will reset and try to connect again. This happened to me when i connected two controllers (Domoticz + Myscontroller) to the same ethernet gw...

@martrw You sound pretty hopeless... and not even getting past the first step. Have you measured voltages etc. to make sure the radio gets its juice (and not more than 3.5V)? You can test your arduino with a "blink" sketch on all the relevant pins. If all correct I can't think of anything else that a very bad batch of radio's.

@martrw goad I could help. To edit the topic name, click the three dots at the bottom-right of your first post and select Edit. Then click the row above the text formatting tools and change the text.