Control panels made by industry leaders such as Grass Valley Group, Echolab, and Ross were built to exacting standards using top-notch components to ensure they held up to daily use in a professional television environment. These panels are now available at low cost on the used market because the switchers they controlled are obsolete. Using an interface adapter lets you control your ATEM with a professional panel at a very reasonable cost.
The adapter receives signals from the panel using the RS-232 or RS-422 serial protocol.
These commands are processed by the adapter processor and depending on the situation, send commands to the Atem switcher via the Ethernet network. Also, the adapter requests the current state from Atem, makes signals for the panel and sends it through the RS-232 to the panel.
In fact, the panel is just a set of buttons, knobs, T-bar, indicators.
All work on managing Atem and displaying information on the panel is performed by the adapter.
I researched and completed reverse engineering of panel communication protocols (each panel has its own protocol) and developed a series of interface adapters for some control panels:
Echolab Overture 1,
Echolab Identity 4,
Echolab Overture 2,
Ross Video Synergy 100,
Grass Valley GVG110,
which are presented here.