On this project, I used Rpi-Zero to display RTSP camera stream over HDMI. There is no voice communication between in and out but there will be a pass control mechanism.
Main Schematic:
Power Lines Schematic:
On this project, I used Rpi-Zero to display RTSP camera stream over HDMI. There is no voice communication between in and out but there will be a pass control mechanism.
Main Schematic:
Power Lines Schematic: