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Can't connect LiDAR-lite V3 to Pixfalcon via I2C

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@brewkon wrote:

I am trying to connect a LiDAR-lite V3 by Garmin to a Pixfalcon with copter 3.4.6 via I2C. I can’t enable the Sonar in the initial setup page the enable button is blacked out. After setup is complete sonarrange and sonarvoltage both show as zero, it looks like no input is coming from the LiDAR. I have wired it according to the wiring diagram on the wiki, http://ardupilot.org/copter/docs/common-rangefinder-lidarlite.html and the LiDAR-lite V3 manual https://static.garmin.com/pumac/LIDAR_Lite_v3_Operation_Manual_and_Technical_Specifications.pdf I have tried configuring some of the rangefinder parameters in config/tuning including RNGFND_ADDR, RNGFND_TYPE, and RNGFND_PIN it still didn’t work.

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