Arducam 1MP*4 Quadrascopic Camera Bundle Kit (B0331) external sync

Hi there,
Is that possible to use the external trigger on B0331 for hardware sync along with cameras and something like IMU?

hi, @xuhao3e8

B0331 supports external trigger, which can be synchronized with hardware.

@yang Thanks for your reply! But how to do it? I can’t find in the documents.

hi, @xuhao3e8

You can view the camera’s outer trigger control name with the command below.

v4l2-ctl -l 

Enable external triggering through the v4l2-ctl -c command.

v4l2-ctl -c trigger_mode=1

We recommend sending the trigger signal with a pulse of 1 ms. As shown below:

HI, thanks again. But what’s the pinout for external trigger? And what’s the voltage of the signal? 5V? 3.3V?

hi, @xuhao3e8

The external trigger pin is marked in the red box below. It’s on the camera board.

The signal voltage is 1.8v

lQLPJxZu99jLQQvM080CUbCJ7Kv1VKNShAK24GPjwLwA_593_211

So I need to connect every camera’s trigger pin together?