{"action":"created","issue":{"url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl/issues/3","repository_url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl","labels_url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl/issues/3/labels{/name}","comments_url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl/issues/3/comments","events_url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl/issues/3/events","html_url":"https://github.com/Hacks4ROS/h4r_ev3_ctrl/issues/3","id":168769672,"number":3,"title":"joint_state topic value not accurate","user":{"login":"inhok996","id":10493793,"avatar_url":"https://avatars.githubusercontent.com/u/10493793?v=3","gravatar_id":"","url":"https://api.github.com/users/inhok996","html_url":"https://github.com/inhok996","followers_url":"https://api.github.com/users/inhok996/followers","following_url":"https://api.github.com/users/inhok996/following{/other_user}","gists_url":"https://api.github.com/users/inhok996/gists{/gist_id}","starred_url":"https://api.github.com/users/inhok996/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/inhok996/subscriptions","organizations_url":"https://api.github.com/users/inhok996/orgs","repos_url":"https://api.github.com/users/inhok996/repos","events_url":"https://api.github.com/users/inhok996/events{/privacy}","received_events_url":"https://api.github.com/users/inhok996/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2016-08-01T23:59:38Z","updated_at":"2016-08-18T15:55:18Z","closed_at":null,"body":"Hello~! I've been making my ev3 autonomous using ROS. I used motors.launch so that I could use the topics which I can make my ev3 move(outPortA(B)/command) and construct odometry information(joint_states).\r\nmotors.launch worked successfully but I have an issue. When I publish minus value to /ev3dev/outPortA(B)/command, joint_state position and velocity value increase. This makes me hard to make node for odometry."},"comment":{"url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl/issues/comments/240768884","html_url":"https://github.com/Hacks4ROS/h4r_ev3_ctrl/issues/3#issuecomment-240768884","issue_url":"https://api.github.com/repos/Hacks4ROS/h4r_ev3_ctrl/issues/3","id":240768884,"user":{"login":"croesmann","id":4332529,"avatar_url":"https://avatars.githubusercontent.com/u/4332529?v=3","gravatar_id":"","url":"https://api.github.com/users/croesmann","html_url":"https://github.com/croesmann","followers_url":"https://api.github.com/users/croesmann/followers","following_url":"https://api.github.com/users/croesmann/following{/other_user}","gists_url":"https://api.github.com/users/croesmann/gists{/gist_id}","starred_url":"https://api.github.com/users/croesmann/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/croesmann/subscriptions","organizations_url":"https://api.github.com/users/croesmann/orgs","repos_url":"https://api.github.com/users/croesmann/repos","events_url":"https://api.github.com/users/croesmann/events{/privacy}","received_events_url":"https://api.github.com/users/croesmann/received_events","type":"User","site_admin":false},"created_at":"2016-08-18T15:55:18Z","updated_at":"2016-08-18T15:55:18Z","body":"thanks, I tried that and `/sys/class/tacho-motor/motorX/position` is strictly increasing as well even for negative values. So it should be a driver issue.\r\nIt is interesting that the controller actually drives the motor to the correct position (either left or right), just the returned position is positive only."}}
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