ROS Raspberry Pi Demo

References

• Raspberry Pi 3 Ubuntu Mate Xenial 16.04 with ROS Kinetic image
• ROS motor controller node for Adafruit motor HAT IE 2348
• Adafruit motor HAT specs
• Adafruit motor HAT documentation
• Adafruit configuring I2C on Raspberry Pi
• ROS Tutorials

Execution

terminal 1

 roscore

terminal 2

 cd catkin_ws/
 source devel/setup.bash 
 rosrun motor_hat motor_hat_node 

terminal 3

 rosnode list
 rostopic list
 rostopic echo cmd

terminal 4

 cd catkin_ws/
 source devel/setup.bash
 rosrun motor_hat stop.py 
 rosrun motor_hat on.py 

QUESTION - Why isn't the message often not received by the motor_hat_node?

References

• ROS on Raspberry Pi
• tf