I want to use FFC-4P to do hard synchronization including the four cameras and the onboard IMU so that the latency between them is consistent and within 1ms as much as possible. According to the posts in the forum, I connected the FSIN of four camera wiring with the camera circuit board, and used GPIO6 for relay, and realized the synchronization of four cameras within 0.5ms. Now I want to set the frequency of the IMU to about 30hz, and use some flag bit of the IMU (I don't know what the flag is) to trigger the sampling of the camera, hoping to achieve perfect synchronization between the IMU and the camera. However, I am a novice and have never used script node in programming. Even after reading the description of "depthai-experiment", I still don't know how to insert script node into my python program and how to write the script node correctly. I was hoping to get some help.