The current finite scan function is written in a way that each hat is slightly out of sync during recording, due to calling 'record' on each hat line by line.
Take a look at the "multi_hat_synchronous_trigger" example in the MCC172 library. It is likely that using an external trigger from the Raspberry Pi's GPIO pin is the only way to get each hat to record synchronously.
The current finite scan function is written in a way that each hat is slightly out of sync during recording, due to calling 'record' on each hat line by line.
Take a look at the "multi_hat_synchronous_trigger" example in the MCC172 library. It is likely that using an external trigger from the Raspberry Pi's GPIO pin is the only way to get each hat to record synchronously.