@SWARNA-MOHAN-CHANDRA-KANTH said in How to use PCA9685 with voxl:
PCA9685
Seems like that is an I2C device, you could start looking here at how to control an I2C bus from VOXL:
https://docs.modalai.com/voxl-i2c-io/
How are you looking to control this and for what use case? Above assumes you are running the I2C program on the VOXL's processor (not PX4).
If using PX4, you'd want to do this in the PX4 firmware instead.