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2016-09-13 16:20:33 -0500	asked a question	smach vs boost state machine libraries? What are your thoughts on using the ROS SMACH package vs using the boost MSM (Meta State Machine) or Statechart packages for making a hierarchical state machine? I don't know much about them and would like to know the pros/cons for each and what your experience has been if you've used these.
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2016-07-18 19:29:13 -0500	asked a question	usb_cam latency when using low fps I am using the usb_cam driver package and rqt_image_view to view the image from a USB camera. The problem I'm facing is that the latency of the displayed image increases a lot when I drop the frame rate. At the default 30fps, there is no noticeable lag when viewing through rqt_image_view. But 30fps uses a lot of CPU and I only need about 5 fps. Unfortunately, when I change the framerate parameter in usb_cam to 5 fps, the latency jumps to around 1 second (eyeballed). All parameters are default values except the pixel_format which is yuyv. (I tried changing the io_method around but that had no effect.) Any thoughts on how I could lower the latency is appreciated!