wicked88's profile - activity

overview network karma followed questions activity

2020-03-19 08:08:20 -0500	received badge	● Taxonomist
2020-02-05 10:51:09 -0500	received badge	● Self-Learner (source)
2020-02-01 09:46:32 -0500	received badge	● Famous Question (source)
2019-04-15 12:09:38 -0500	received badge	● Good Question (source)
2018-08-23 14:52:46 -0500	received badge	● Notable Question (source)
2018-08-23 14:52:46 -0500	received badge	● Popular Question (source)
2018-05-28 11:02:18 -0500	received badge	● Nice Question (source)
2017-10-30 11:57:34 -0500	received badge	● Famous Question (source)
2017-10-30 11:57:34 -0500	received badge	● Notable Question (source)
2017-10-16 10:29:17 -0500	received badge	● Notable Question (source)
2017-07-09 04:07:14 -0500	received badge	● Popular Question (source)
2017-03-24 11:07:03 -0500	received badge	● Nice Answer (source)
2017-03-24 10:36:07 -0500	received badge	● Student (source)
2017-03-20 04:20:54 -0500	received badge	● Teacher (source)
2017-03-19 04:25:20 -0500	asked a question	Weird compile error using ROS and Gazebo libraries Hi guys, Came across the weirdest compile error: In function `ignition::math::Vector3<double>::operator[](unsigned long) const': gzwidget.cpp:(.text._ZNK8ignition4math7Vector3IdEixEm[_ZNK8ignition4math7Vector3IdEixEm]+0x2b): undefined reference to `ignition::math::IndexException::IndexException()' `libgazebo_common.so` is throwing this. What the hell is going on ? Im linking `ignition_math2` libraries, people in ignition sent me here. Thanks
2017-03-16 09:51:23 -0500	asked a question	Deserialize ros messages in RosJava Hi guys, Im implementing a neat stuff in my android for my robotic soccer team. I receive (by multicast) packets that contain serialized ros messages. I've already "compiled" the messages in java, using genjava and i have a rosjava_messages/ fully loaded with all the ROS messages in my system. I'm a C++ guy, so, how can i compile an android project (android studio) against the jar's containing the messages ? i followed the tutorials but i get a lot of errors. I've already compiled against other libraries on the same project, so i know how to do it, but compiling against ROS stuff is a lot more complicated. Any help here ?? Thanks
2017-03-12 08:35:27 -0500	commented answer	Problems with communication between multiple machines @gvdhoorn it can be somehow useful to have the NAT on the Robot's PC because it will allow me to SSH into the Raspberry to, perhaps, update its software with the online connection provided by the masquerade !
2017-03-12 08:32:49 -0500	answered a question	Connect two networks with one roscore I had the same problem. Fixed it really easily ! Just check out my question : #q256070
2017-03-12 08:31:11 -0500	answered a question	Problems with communication between multiple machines @gvdhoorn i managed to do it. I kept those Ip tables commands i did and i just added to My PC : sudo route add -net 172.17.1.0 netmask 255.255.0.0 gw 172.16.49.1 I'm grateful for your help, this case is closed ! [Summing up for future visitors of this question] On ROS_MASTER PC, set IP forwarding between eth0 and wlan0, being wlan0 the output interface (like if we wanted to share internet over ethernet connected devices). This step is enough for Raspberry to reach any IP in the WLAN. On host PC (My PC in this case) just add a route to the Raspberry, having the Robot's PC as the gateway. `sudo route add -net ETHERNET_NETWORK_IP netmask ETHERNET_NETWORK_MASK gw ROBOT_PC_IP`
2017-03-12 07:38:45 -0500	commented answer	Problems with communication between multiple machines @gvdhoorn i managed to set up ip forwarding rules for my Robot's PC and i can successfully receive data from My PC in Raspberry ! link text. Although, i still can't receive data from the PI, (Pc dont ping Pi, but Pi pings PC).
2017-03-12 06:59:52 -0500	commented answer	Problems with communication between multiple machines @gvdhoorn i've read that before ! I will try some options to setup the routing process and hope for the best ! Do you have any experience in doing that ?
2017-03-12 06:58:51 -0500	received badge	● Scholar (source)
2017-03-12 06:58:47 -0500	received badge	● Supporter (source)
2017-03-12 06:35:36 -0500	received badge	● Famous Question (source)
2017-03-12 06:33:32 -0500	received badge	● Famous Question (source)
2017-03-12 06:06:19 -0500	commented question	Problems with communication between multiple machines @gvdhoorn finally got enough Karma to post the damn picture. @bidaian yep, i can't, but i thought the ros master would handle the package routing for me. How can i do this in linux ? i know that ip routing will do the trick, but i'm a first timer in ip routing tables :D
2017-03-11 19:06:01 -0500	received badge	● Notable Question (source)
2017-03-11 18:26:03 -0500	edited question	Problems with communication between multiple machines So, i have this setup in my ros network: My PC (172.16.49.9) as a publisher of the topic /controlInfo Robot's PC (172.16.49.1 aka 172.17.1.1) as the ROS Master Raspberry Pi hardware module (172.17.1.10) as subscriber of the topic /controlInfo Pi is connected to Robot's PC through ethernet on the 172.17.x.x network. In both Pi and Robot's PC i can list all the nodes, see that /controlInfo is subscribed by 172.17.1.10 and published by 172.16.49.9, and whenever i publish data, i can echo-it in Robot's PC (so, the data reaches the master), but i can't echo-it in Pi. What's the problem here ? Since i can successfuly communicate between the Robot's PC and the Pi, i can list and everything seems to be correctly setup, why u no work ??? --- EDIT I made a new test on the machines, as my PC is providing the WLAN for the robot's PC. So, my pc has now ip 172.16.49.254, Robot's PC and Raspberry remains the same. My PC communicates with Robot's PC through WLAN and the raspberry is connected to Robot's PC by ethernet. I made a call to rosnode info (node in raspberry) from the Robot's PC and everything is ok. I made the same command from my PC and, although i can get a lot of info (which stuff it subscribes/publishes) it gives me an error : (pi_hw node is inside raspberry pi, and Robot's PC is the ROS_MASTER, all ROS_IP's are correctly set). `Node [/pihw_node] Publications: * /rosout [rosgraph_msgs/Log] * /hardwareInfo [minho_team_ros/hardwareInfo] Subscriptions: * /teleop [unknown type] * /controlInfo [unknown type] Services: * /requestIMULinTable * /requestOmniProps * /pihw_node/get_loggers * /requestKick * /pihw_node/set_logger_level * /requestResetIMU contacting node http://172.17.1.10:33608/ ... ERROR: Communication with node[http://172.17.1.10:33608/] failed!` It seems i can fetch information about the node (because it may be stored somewhere in Robot's PC) but i cant communicate with Raspberry because my PC can't reach her. I can successfully communicate from my PC to Robot's PC and from Robot's PC to Raspberry. --- EDIT Network scheme. It seems My PC and Raspberry need to communicate directly in order for this to work, so i will probably need ip routing. WLAN : 172.16.49.0/24 Robot's PC Ethernet : 172.17.0.0/16 `PC IP ROS_MASTER_URI ROS_IP ROS_HOSTNAME My PC 172.16.49.9 172.16.49.1 172.16.49.9 pedro K52Jc Robot's PC 172.16.49.1 172.16.49.1 172.16.49.1 robot1 Rasp 172.17.1.10 172.16.49.1 172.17.1.10 rasphw1` I truly believe that the only problem here is that Rasp cannot reach directly My PC, so they dont communicate, and it is a normal thing (that they cant reach each other) but i thought ... (more)
2017-03-11 18:26:03 -0500	received badge	● Editor (source)
2017-03-04 10:44:24 -0500	commented question	Problems with communication between multiple machines Yep, it is .10 sorry
2017-03-04 03:46:54 -0500	commented question	Problems with communication between multiple machines Hi, in my pc ROS_IP is set to 172.16.49.9, in Pis is set to 172.17.1.0 and in Robot's PC to 172.16.49.1 (ethernet ip is 172.17.1.1). Will check on that data on monday and get back gere