Rngfndx_orient =24

ArduCopter Copter 4.5
1

I am using many TFmini plus i2c.
I want to use one of these one to facing upward to ceiling.
Mission planner 13.8.2 and drone firmware is 4.5.7.
All orients works correctly and check the distance.
But rngfndx_orient 24 can not check the distance from ceiling.

Object Avoidance using simple Lidar (Forward and Upwards) by Randy Mackay.

Please let me know how to set the parameters at mission planner.

2

If you have two rangefinders are they set to different I2C addresses?
Will the upward facing rangefinder work by itself (all others disconnected) ?