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2013-04-26 15:10:43 -0500	commented answer	velodyne position packets Thanks for your helpful advice.
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2013-04-25 14:10:00 -0500	asked a question	velodyne position packets Hi, I don't know how accurate these are, but I tried to use position packets that described as below. Position Packets contain(source port : 8308): Header, Zero’s, 3x Boards with 8byte Gyro data, Zero’s, Timestamp, Zero’s, NMEA sentence, Zeros (total of 554 bytes, incl 512 data bytes) I can monitor the packets using Wireshark, but I wonder if the packets can be acquired by velodyne ros package. I saw only 2368 port number(distance and intensity info) on source codes. I'm not quite sure that the velodyne package is implemented to get the position packets. Is there anyone who knows about this? :)
2013-01-31 04:47:46 -0500	commented question	how to extract the data from the packets of Velodyne HDL-32E @piyushk: Thank you.
2013-01-30 13:37:54 -0500	received badge	● Notable Question (source)
2013-01-29 12:26:04 -0500	commented question	how to extract the data from the packets of Velodyne HDL-32E @piyushk: Thanks. I think that I solved the above warning messages. You mean that the topic "/velodyne_points" has unpacked data, but "$rostopic echo /velodyne_points" shows also 1byte digit to me. Is this right? I could see the pointclouds using rviz, but I want to save as numerical data.
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2013-01-27 17:53:01 -0500	asked a question	how to extract the data from the packets of Velodyne HDL-32E hi, I'm using velodyne and Pan-Tilt Unit together. I could get the packets with the below command. $ rosbag record -O test.bag /velodyne_packets /velodyne_points or $ rosrun velodyne_driver vdump pcap- eth0 However, results are just expressed as the combination of 1-byte digit. I need the information such as laser sources, distances, rotations, intensities, etc. I've seen that the code(velodyne/velodyne_pointcloud/src/lib/rawdata.cc) has the unpacking formula of a packet, but I couldn't know how to extract the data directly. Do I have to change the source codes? OR Is there another way to get the unpacked data? Your comments will be much appreciated. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I have two warning messages when I typed below two commands respectively. $ rosrun velodyne_driver velodyne_node _model:=32E [ WARN] [1359363950.652052848]: Velodyne poll() timeout $rosrun velodyne_pointcloud transform_node _calibration:=32db.yaml [ WARN] [1359363867.642563134]: MessageFilter [target=/odom ]: Dropped 100.00% of messages so far. Please turn the [ros.velodyne_pointcloud.message_notifier] rosconsole logger to DEBUG for more information. I don't know what's wrong.