About the Blockly programming category

bamiller · May 13, 2023, 1:26am

Discussion about using the Blockly programming environment and tool to create programs for the XRP.

sdooley · November 1, 2023, 1:05pm

Does anyone have some sample Blockly code they wouldn’t mind sharing to get the sensors working?

SCSpaeth · November 5, 2023, 4:36pm

The XRP Users Guide:
https://xrpusersguide.readthedocs.io/en/latest/course/sensors.html
contains a couple pics of Blockly code snippets that might help you get started.

SCSpaeth · November 5, 2023, 7:38pm

The Intro To Robotics document also has some pics of Blockly sensor scripts:
https://introtoroboticsv2.readthedocs.io/en/latest/course/measuring_distance/intro.html#robotic-echolocation
The document explicitly offers the Python code; you need to select the Blockly tab to see the Blockly snippet pics.

sdooley · November 16, 2023, 1:39pm

Thanks for the suggestion, but this link appears to be dead. Anyone have an update?

sdooley · November 16, 2023, 1:40pm

This link is also dead and 404’s.

SCSpaeth · November 16, 2023, 1:47pm

Both links work for me (just now, retested). I’ll try to find another alternative.

The github repository for the documents contain images of the Blockly scripts.

github.com

Open-STEM/XRPUsersGuide/blob/main/course/sensors.rst

Sensing the environment
=======================

.. image:: images/DevBoard.png
    :width: 300

Measuring the distance to an object
-----------------------------------
The XRP includes an ultrasonic rangefinder that can measure the
distance to objects in front of it.  The sensor has two transducers;
one acts as a speaker, and the other acts as a microphone. It does
it by sending a burst of ultrasonic sound out of the speaker that
hits an object in front of the robot. The sound reflects off the
object back to the sensor and is captured by the microphone. The
time for that round trip determines the distance to the object.
Understanding how well the sound reflects off various objects of
different sizes, profiles, and materials is important for using
the sensor. A good exercise is to test the sensor by printing
returned values at various distances from any object you want the
robot to detect.

This file has been truncated. show original

You may need to preview the document in order to see the images rather than links to the inline images.

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About the Blockly programming category

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