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2020-02-18 11:14:08 -0500 | commented answer | rosbridge publish to /joy_node: Error Received a message without an op Thanks @gvdhoorn adding the quotes to the frame_id variable fixed it. But since the frame_id is left empty also in the „ |
2020-02-18 10:34:18 -0500 | marked best answer | rosbridge publish to /joy_node: Error Received a message without an op I am trying to publish joystick movements to the /cmd_vel topic and the /joy_node topic from rosbridge Android. While publishing to the /cmd_vel node works perfectly fine, publishing to /joy_node fails with the Error: "Received a message without an op." over the same connection to the ROSbridge master. My coding: I read here in this forum that rosbridge doesnt have a dedicated error handling for the parsing od json obects and that the error received indicates some problem with the json object definition. So I verified the json string in JSONlint and it appears valid and consistent with the message type definition at http://docs.ros.org/api/sensor_msgs/h... What is wrong with my json object here? Thanks! |
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2020-02-18 03:11:39 -0500 | answered a question | rosbridge publish to /joy_node: Error Received a message without an op OK I could finally solve the problem. The issue was the definition of the frame_id. While the ROS message definition dec |
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2020-02-17 11:55:31 -0500 | commented question | rosbridge publish to /joy_node: Error Received a message without an op Yes I know. Thats why I am trying to use the /joy topic. I implemented the /cmd_vel topic only to verify that rosbridge |
2020-02-17 11:40:20 -0500 | commented answer | rosbridge publish to /joy_node: Error Received a message without an op Thanks @gvdhoorn I tried advertising of /joy and publishing to /joy instead of /joy_node makes no difference. I still ge |
2020-02-17 09:11:30 -0500 | edited question | rosbridge publish to /joy_node: Error Received a message without an op rosbridge publish to /joy_node: Error Received a message without an op I am trying to publish joystick movements to the |
2020-02-17 09:04:11 -0500 | asked a question | rosbridge publish to /joy_node: Error Received a message without an op rosbridge publish to /joy_node: Error Received a message without an op I am trying to publish joystick movements to the |
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2020-01-21 10:15:33 -0500 | asked a question | ROS for Android install fails with Could not resolve org.codehaus.mojo:animal-sniffer-annotations:1.14 ROS for Android install fails with Could not resolve org.codehaus.mojo:animal-sniffer-annotations:1.14 I am trying to in |