@Eric-Katzfey Thank you for your prompt response. The camera has an accessory cable that connects to PWMs on VOXL (page 12 in user manual the accessory cable pin outs are explained). I think I should connect the accessory cable to J1002 on the VOXL and PWM 3 & 4 to PWMs on VOXL. However, I am not sure how I can trigger the camera using PWMs on VOXL.
Using the FLIR Pro App, I can set PWM 3 or 4 of the accessory cable to be used as to start/stop the camera but I have no experience on how to configure VOXL to trigger PWMs.