I'm using a canon 5DS to aerial map, i'm trying to find a way to record a pulse from the camera so my IMU can record when an image is taken. I have tried the hot shoe, but it seems to only send a signal when a flash is connected and the signal is not really a voltage. I need 3v or greater. I found that the camera sends a .47v signal through the pc sync connector, so i've ordered a dc-dc voltage booster in hopes that I can boost the signal enough so my IMU will recognize the signal and record an event.
Does anyone know of any other way to record a signal from a DSLR when the camera is triggered?