I have spent a bit of time improving the design of the collar enclosure in Solidworks, so I can start 3D printing some test versions once I receive and measure the last few components (speakers and solar panels) that I am waiting on.

In order to make the collar fit many sized animals I have made the two sides such that they can rotate up and down. This adds some difficulty in getting the wires from the solar panels, speakers, etc to the main circuit board and keeping it weatherproof. I have designed the hinge such that the wires can go through them, however this will require testing as to whether it reduces the strength of the pin significantly.

There are still a few things to add, but for now I will keep working on the electronics with final component choices being made (next log) and PCB design to begin.

Files are available at GitHub (GNU GPLv3).