Errors when using fingertip_pressure
No Data From Sensors
Use rostopic to check if the sensors are properly publishing data.
rostopic echo pressure/r_gripper_motor
If the data for pressure contains only "0" or "-1" values, then the tip sensors are not properly hooked up. You'll need to check your connections.
No Data Displayed By Visual Tools
The visual tools in this package always look for messages on the right gripper motor. If you are looking for data from the left gripper, you will have to remap the topics.