Running multiple Bolts synchronized with external trigger

[HunorLaczko]

Hi,

I'm trying to set up 8 Femto Bolt devices to do synchronous capture, but triggered from an external source (raspberry pico).

I have connected the pico to one of the Bolts, through its VSYNC_IN and GND pins, this Bolt is connected to the Sync Hub Pro's master port (with the other 6 pins, since VSYNC_IN and GND is taken by the pico). It has the "trigger out" pin enabled. I have the other 7 Bolts connected to the Sync Hub Pro with the official adapter cables as slaves. I tried to disable the "trigger out" function, but it didn't work. I have set up the delays as well in the MultiDeviceSyncConfig.json file. All 8 devices are configured in OB_MULTI_DEVICE_SYNC_MODE_SECONDARY mode. I'm working with a modified version of the MultiDeviceSync example, where I start all the cameras, and sleep for 10 seconds then stop the devices. During this I start the external signal on the pico. I had this working at one point, but then changed something and couldn't get it to work after.

Could you tell me if this is the right approach to what I want to do?

Thank you!