Hi @Rupesh, welcome to the forum! That error means ROS can’t find Stretch’s ROS packages. There’s a few reasons why this might be happening. Start by opening a file explorer and confirming you have a ROS workspace called “catkin_ws”.
Thanks, I upgraded the ubuntu as you suggested, the camera and lidar are working smoothly.
But, Dex Wrist (Gripper) has stopped working after installation.
When I ran “stretch_robot_system_check.py”, I got
Also, after running
./stretch_new_dex_wrist_install.sh” , I did not get any error. But the terminal gets stucked in following. Although I wait for a very long time, it won’t proceed.
Great, thanks! The Dex Wrist communicates on a serial bus at 115200 baud (i.e the speed of communication). Notice how servo 14 is detected with baud rate 57600. Changing servo 14’s baud rate to 115200 should make one of the unpingable servos come back online. Use the following command to change the baud rate:
2 of the 4 total servos did not show up in the ID scan you did. Usually this happens because there’s a loose or damaged cable. Would you investigate the cables in gripper’s wrist and confirm they’re all undamaged and plugged in. Here’s a picture of what the cable looks like:
Hey @Rupesh, looks like your robot’s software is configured mistakenly for the DexWrist end-of-arm tool instead of the Standard Wrist end-of-arm tool. You can use the Dex to Standard Wrist - Software Instructions to configure your robot to support the Standard Wrist. Also, make sure the robot’s Runstop is not activated before homing.
Let us know if this fixes the homing issue.