span class="nv">$ROBOT_IP</span>
</pre></div>
</div>
<p>Step 4. (Optional) If your callback requires control of the robot, in a second terminal, in the <code class="docutils literal notranslate"><span class="pre">SDK_DIR/python/examples/estop/</span></code>, run</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>python3<span class="w"> </span>estop_nogui.py<span class="w"> </span><span class="nv">$ROBOT_IP</span>
</pre></div>
</div>
<p>Step 5. In a fi