Hello everybody!
I build smartphone application TallyMaster for Android smartphones from Android 8.0.
This app allows you to get vMix and Blackmagic ATEM Tally Light status.
Also, you can voice communicate between cameramen and director.
All you need is to connect all devices to same network with same IP subnet (for example to Wi-Fi router).
If you want to use Intercom, plug your headset to smartphone and enable Intercom.
Operators have to select "Operator" mode in Intercom settings.
Director have to select "Director" mode.
Then tap "Reconnect" button on both smartphones.
Tap and hold "PTT" button on Operator unit and speak.
Double tap "PTT" to latch button.
Download from Google Play https://play.google.com/store/apps/details?id=my.atem_tallymaster