Very interesting approach. I have already converted a few Homeys to external antennas and may have a few tips for you.
You have to open Homey. This can be complicated because both halves of Homey are glued together. In this trend you will find tips on how to open it.
Homey’s wifi is easy to access. A pigtail connector is hidden under the red heat sink, onto which the cable for the adhesive antenna is plugged. You will find the adhesive antenna in the upper half of Homey. You can cut off the antenna and solder the cable to the coax socket.
