Hello together,

I fixed it and now it feels way to easy. But I will leave the solution here anyway. Maybe it helps the next person starting with tf's.

The running code: first node:

!/usr/bin/env python

import rospy import tf

class tf_firsttry_pub_class(): def __init__(self): rospy.init_node('tf_firsttry_pub') now = rospy.Time.now() br = tf.TransformBroadcaster() R = rospy.Rate(150) while not rospy.is_shutdown(): br.sendTransform((1, 1, 1), (0, 0, 0, 1), rospy.Time(), 'One','base_link')
R.sleep()

if __name__ == '__main__': try: tf_firsttry_pub_class() except rospy.ROSInterruptException: pass

second node:

!/usr/bin/env python

import rospy import tf

class tf_firsttry_listen_class(): def __init__(self): rospy.init_node('tf_firsttry_listen') listener = tf.TransformListener() now = rospy.Time.now() while not rospy.is_shutdown(): listener.waitForTransform('/base_link','/One',rospy.Time(), rospy.Duration(4.0)) (trans, rot) = listener.lookupTransform('/base_link', '/One', rospy.Time(0)) print trans

if __name__ == '__main__': try: tf_firsttry_listen_class() except rospy.ROSInterruptException: pass

Note the R = rospy.Rate(150) and R.sleep() in the first code and the listener.waitForTransform in the second!

Hello together,

I fixed it and now it feels way to easy. But I will leave the solution here anyway. Maybe it helps the next person starting with tf's.

The running code: first node:

#!/usr/bin/env python

import rospy
import tf
 
tf

class tf_firsttry_pub_class():
    def __init__(self):
        rospy.init_node('tf_firsttry_pub')
        now = rospy.Time.now()
        br = tf.TransformBroadcaster()
        R = rospy.Rate(150)
        while not rospy.is_shutdown():
            br.sendTransform((1, 1, 1), (0, 0, 0, 1), rospy.Time(), 'One','base_link') 

            R.sleep()
 
     
            R.sleep()


if __name__ == '__main__':
    try:
        tf_firsttry_pub_class()
    except rospy.ROSInterruptException:
        passpass

#!/usr/bin/env python

import rospy
import tf
 
tf


class tf_firsttry_listen_class():
    def __init__(self):
        rospy.init_node('tf_firsttry_listen')
        listener = tf.TransformListener()
        now = rospy.Time.now()
        while not rospy.is_shutdown():
            listener.waitForTransform('/base_link','/One',rospy.Time(), rospy.Duration(4.0))
            (trans, rot) = listener.lookupTransform('/base_link', '/One', rospy.Time(0))
            print trans
 
trans


if __name__ == '__main__':
    try:
        tf_firsttry_listen_class()
    except rospy.ROSInterruptException:
        passpass