Here is the place to collect REC triggering principles/mechanisms for various cameras.

If you already know how the REC is triggered for a certain brand/model of camera, please let us know here. This information is very useful to developers and other users.

We will continue to update the documentation based on the information we collect.

A good report template:

• Brand: Sony
• Model: Alpha 6300
• REC trigger: via Sony Multi-Terminal Protocol (based on UART RS232)
• Additional info:
  • Jacket on camera: Multi-USB with "MULTI" mark
  • Connector: Multi-USB
  • More details: http://peterwedege.blogspot.com/2016/01/analyzing-sonys-new-multiport-protocol.html https://www.studio1productions.com/sony-multiport-connector.htm
  • It seems that any camera from Sony that has this Multi-USB port can use this protocol for REC triggering.