ROS With Arducam ToF Camera – for Raspberry Pi

About ROS

Robot Operating System (ROS or ros) is an open-source robotics middleware suite. Although ROS is not an operating system (OS) but a set of software frameworks for robot software development, it provides services designed for a heterogeneous computer cluster such as hardware abstraction, low-level device control, implementation of commonly used functionality, message-passing between processes, and package management.

Using ROS2 with Arducam ToF Camera

To properly use ROS2 with Arducam ToF Camera, the camera driver and necessary dependencies have to be installed first.

If you have NOT installed them yet, start from Step 1. (Step 1, 2, 3 are same commands as those instructed in <Getting Started: Arducam ToF Camera for Raspberry Pi>
If you have already installed them, please start from Step 4.

Step 1. Pull the repository.

git clone https://github.com/ArduCAM/Arducam_tof_camera.git

Step 2. Change the directory to Arducam_tof_camera

cd Arducam_tof_camera

Step 3. Installation (Driver, Dependencies, SDK, OpenCV)

./Install_dependencies.sh

When you see the reboot prompt, enter y. Raspberry Pi will automatically reboot.

Step 4. Installing ROS2

curl -s https://raw.githubusercontent.com/v1ster/rpi-bullseye-ros2/main/install.bash | bash

ROS2 Configuration

#Modify enviroment viriables
echo "source /opt/ros/humble/setup.bash" >> ~/.bashrc 
echo "export ROS_DOMAIN_ID=7" >> ~/.bashrc 
source ~/.bashrc 
sudo apt install python3-colcon-common-extensions

Step 5. Compile & run ROS2 on your Raspberry Pi

Compile

cd Arducam_tof_camera/ros2_publisher
colcon build --merge-install

Run

. install/setup.bash 
ros2 run arducam_rclpy_tof_pointcloud tof_pointcloud

Step 6. Previewing on your HOST computer

Install ROS2 on your host PC, and run rviz2

rviz2

Click Add > By topic > Select PointCloud2

Enable PointCloud2, change Fixed Frame to sensor_frame, and change Size (m) to 0.001, and you will see a real-time point cloud preview like the following: