Lidar-Lite V3 Laser Ranging module

[Gart6520Hieu]

We have just purchased our first lidar-lite v3. Unfortunately, none of us actually know how to use it lol. Hope to receive help from you guys.

[Knufire]

LIDAR Lite v3 distance measurement

Has anyone had success using the LIDAR Lite v3 with Java Programming?

[JesseK]

This isn’t lined in the other thread, but could be relevant - AndyMark has a sample LidarLite java implementation with a lot of great inline code comments, here:
https://www.andymark.com/pages/resources-files?prefix=Supplemental%20Documentation/
LIDAR-LitePWMExample am-3829.zip

[Prateek_M]

We wired the PWM output of the LIDAR Lite to a CANifier and got raw values that way. Here is our code for reference:

FRC5190/2019CompetitionSeason/blob/master/src/main/kotlin/org/ghrobotics/frc2019/subsystems/climb/ClimbSubsystem.kt#L152-L154

Please let me know if you have any questions.

[cmarley]

garykac/amhs-robotics-4681

We experimented with this to great success on our robot. We didn’t put it to use, but I guarantee it works.

Please ask questions!

• 4681 Co-Lead Programmer

[ddeford]

• canifier.getPWMInput(CANifier.PWMChannel.PWMChannel0, tempPWMData)
• rollingLidarAverage.add(tempPWMData[0])
• lidarRawAveraged = rollingLidarAverage.average

Hi, we have our Lidar connected to a canifier board and have proven that the lidar is putting out the correct PWM signal. Our SW team has used the same code you used but they are only seeing 0s. We have tried a second canifier board to insure it was not that. Anything else you can think of that is causing us to only read 0s?

Thanks, Don D (Team 1405)

[Prateek_M]

Verify that you are using the correct ID for the CANifier in code by checking the ID on Phoenix Tuner. Also make sure your firmware is up to date.