https://wiki.bespokerobotsociety.org/index.php?action=history&feed=atom&title=Capability%3AUltrasonic_SensingCapability:Ultrasonic Sensing - Revision history2026-04-25T10:18:54ZRevision history for this page on the wikiMediaWiki 1.43.5https://wiki.bespokerobotsociety.org/index.php?title=Capability:Ultrasonic_Sensing&diff=32&oldid=prevJohn: Claude edited based on my notes, prompt, and SimpleBot code repository2025-10-11T16:17:40Z<p>Claude edited based on my notes, prompt, and SimpleBot code repository</p>
<p><b>New page</b></p><div>{{Capability<br />
| name = Ultrasonic Sensing<br />
| type = Sensing<br />
| measures = Distance to objects (typically 2cm to 400cm)<br />
| hardware = HC-SR04, JSN-SR04T (waterproof), Maxbotix sensors<br />
| enables = [[Activity:Maze Solving]], obstacle avoidance, distance measurement<br />
| status = '''Stub''' - Not yet implemented in BRS robots<br />
}}<br />
<br />
'''Ultrasonic Sensing''' is a sensing capability that measures distance using sound waves beyond human hearing range.<br />
<br />
== Overview ==<br />
<br />
'''This is a stub page.''' This capability is not yet implemented in any BRS robot. This page exists to:<br />
* Document the concept for future implementation<br />
* Invite community members to add it to their robots<br />
* Provide a starting point for hardware selection<br />
<br />
== What It Measures ==<br />
<br />
Distance to objects (typically 2cm to 400cm)<br />
<br />
== Common Hardware ==<br />
<br />
HC-SR04, JSN-SR04T (waterproof), Maxbotix sensors<br />
<br />
== Enables Activities ==<br />
<br />
Adding this capability to your robot would enable:<br />
<br />
* [[Activity:Maze Solving]]<br />
<br />
== Technical Considerations ==<br />
<br />
* **Advantages**: Long range, low cost, works on most surfaces<br />
* **Disadvantages**: Slow update rate, wide beam (poor angular resolution), interference from soft/angled surfaces<br />
* **Typical cost**: $1-5 per sensor<br />
* **Interface**: Trigger pulse + echo timing<br />
* **Accuracy**: ±3mm at close range, ±1cm at long range<br />
* **Update rate**: ~20 Hz maximum (due to sound travel time)<br />
* **Beam angle**: ~15-30° cone<br />
<br />
== Contributing ==<br />
<br />
Want to add this capability to your robot? Here's how:<br />
<br />
# Select appropriate hardware (see "Common Hardware" above)<br />
# Mount the hardware to your robot chassis<br />
# Wire to your microcontroller<br />
# Write driver code or use existing libraries<br />
# Test and calibrate<br />
# Document your implementation<br />
# Update this page with your findings<br />
# Share on [[Discord]]<br />
<br />
== See Also ==<br />
<br />
* [[Capabilities]] - All capabilities<br />
* [[Activities]] - What this capability enables<br />
* [[Robotics Ontology]] - How capabilities fit into BRS knowledge structure<br />
<br />
[[Category:Capability]]<br />
[[Category:Sensing Capability]]<br />
[[Category:Stub]]</div>John