Bad Lidar Health

Built quadcopter with Pixhawh4 as FC. It is ready to fly, but want to install Benawake Lidar TFmini V1.8 for object avoidance in Mission Planner. Several good presentations on “how to” are available on YouTube and Ardupilot/copter. And I also read info on changing GPS setting from 3 to1. I have it plugged into the telemery1 port. After changing recommended settings many times, have not been able to get rid of “Bad Lidar Health”. When I set up the Lidar in the Benawake instructions, I see graphical voltage changes with distance in the output suggesting it is working.
Trying to return to the default setup, I reset as many of the known lidar parameters to default or 0, and disconnected the Lidar and I am still getting Bad Lidar Health. It still reads something but I dont know where.
Does anyone in the community have a step by step connecting TFmini to Pixhawk4. Other functions are working and I dont want to reset all

You may wish to ask the Ardupilot community.

Good day, better power tf mini with an alternative power source… like and ubec.
Me im using tf mini plus under uavcan without any issues.
Done some tests powering it with an ubec without any problem.

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