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Lucas Walter
Attended University of Washington
Lives in Seattle
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Lucas Walter

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Lucas Walter

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grid_map - Universal grid map library for mobile robotic mapping
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Lucas Walter

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microphone audio -> +GStreamer  encoding +ROS  node -> AudioData msg -> gstreamer decoding ros node -> [-1.0 - 1.0] float array message -> draw waveform in Image (or do whatever with float array)

https://github.com/lucasw/audio_common/tree/appsink
The next step is to have an input node that will subscribe to a float array then encode it with gst, then the existing audio_common audio_play node could play it from speakers.

When drawing waveforms of sequential buffered chunks of a signal, it seems like it would be best to find the phase of the highest strength frequency and then shift the next signal so that visually it doesn't jump around.
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I believe the robots fight each other laser tag style, I'm excited to try them out. Another interesting design feature is the mecanum wheels which allow them to move sideways.
 
Battle with +ROS  robots Wednesday July 27th 7pm at the new Flatstick Pub in Pioneer Square, and hear about the robots from one of the +Robodub inc engineers.
We'll try out the Robodub game which has recently opened at the new Flatstick Pub in Pioneer Square, and hear about the technology from one of their engineers. http://www.robodub.com/
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This is now in Bellevue at the +Robodub inc offices, see the meetup page for details.
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Currently working on underwater 3D laser scanners and various machine vision/computer vision systems.  I used to do avionics for a small aerospace company.


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  • University of Washington
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