@v_v_ramarao We do not sell any external baro hardware so you would have to locate a suitable peripheral from a different source. Then you would have to connect it into VOXL 2 mini. There is no spare i2c port but you could share the magnetometer i2c port on J19 as long as the barometer has a different i2c address than the magnetometer. Then you would have to change your px4 startup script to not start the onboard barometer driver and instead start the external barometer driver.