[SOLVED] Control multiple devices one at a time

How to control multiple devices each one at a time . Say example I want to control 3 servo motor at a time.

Hi…I want to be able to connect and control multiple android devices remotely via the Internet, sending the same command to each device simultaneously.
I do not need many functions, although some extra features would really help but will get to that later,
I need to be able to upload new media content to each device and then display that media content on each device, that is it.

pcb assembly

Greetings, my advise is to use MQTT, your devices may subscribe to the same topic and you will need just a single control widget to manage them.

All the best