Overview

The hardware is currently in version 3.1

• v3.0: First release with weak sending and a hardware bug in the receive path.
• v3.1: Hardware adapter procured and currently being tested.
• v3.1-1: This is a minor release with a changed screw terminal, due to parts availability at JLCPCB.
• v4.0 (development): This is a GDoor version currently under development. Changed:
  • Audio support, GDoor acts as Voip phone
  • Bus voltage measurement

Design

You can download the PDF version of the schematic here. The KiCAD source files are in the Github Repo.