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Tweak wording of software installation
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software_installation.md

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@@ -212,7 +212,8 @@ Time to get the rover driving around!
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Before you continue, place your rover on the ground and away from people.
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Back in VSCode, you should still have `lrr_run` running in one terminal.
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Open a second terminal (the plus sign in the upper right of the terminal window) and run the following command:
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Open a second terminal (the plus sign in the upper right of the terminal window) and run the following command.
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Follow the instructions in the terminal to control your rover.
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@@ -234,16 +235,21 @@ rosrun teleop_twist_keyboard teleop_twist_keyboard.py _speed:=0.2 _turn:=2.0 _ke
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Follow the instructions in the terminal to control your rover. To speed things up, try tweaking the parameters in the command.
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Little Red Rover can go *much* faster than what I've started you out with.
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After playing around a bit, you may find the controls a bit clunky.
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Worry not! We'll fix this in the next tutorial, and even cover how to use a controller.
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> [!INFO]
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> **Whats going on here?**
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>
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> This command runs a node that converts key presses into a [ROS Twist message](https://docs.ros.org/en/melodic/api/geometry_msgs/html/msg/Twist.html). This message it published on the topic `/cmd_vel`, where the rover is subscribed for teleop commands. Several parameters are passed, adjusting the linear and angular speeds to be appropriate for the robot. We also pass the `_key_timeout` parameter, which makes the rover stop whenever you let go of the keys.
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> This command runs a node that converts key presses into a [ROS Twist message](https://docs.ros.org/en/melodic/api/geometry_msgs/html/msg/Twist.html). This message it published on the topic `/cmd_vel`, where the rover is subscribed for teleop commands. In a third terminal, try running this command to see what the node is outputting:
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>
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> ```rostopic echo /cmd_vel```
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>
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> Several parameters are passed, adjusting the linear and angular speeds to be appropriate for the robot. We also pass the `_key_timeout` parameter, which makes the rover stop whenever you let go of the keys.
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> [!TIP]
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> To speed things up, try tweaking the parameters in the command.
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> Little Red Rover can go *much* faster than what I've started you out with.
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After playing around a bit, you may find the controls a bit clunky.
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Worry not! We'll fix this in the next tutorial, and even cover how to use a controller.
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## Troubleshooting
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