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A Sensor for All Seasons

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David Ashton
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Re: cool stuff
David Ashton   11/2/2013 6:41:02 PM
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@Max: Jjulian said: "You could also use it for chasing after a lighted object (say a ball)".

Or your cat??

Max The Magnificent
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Re: cost cutting cool stuff
Max The Magnificent   11/2/2013 11:13:38 AM
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@david: And Max has a spare motor driver on his arduino shield, so he could use that to rotate the US rangefinder. 

Also those Adafruit motor driver shields are cintrolled using I2C and are stackable, so I can add more motors if I need to do so.

Max The Magnificent
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Re: cost cutting cool stuff
Max The Magnificent   11/2/2013 11:11:44 AM
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@Crusty: Why not take a leaf out of the radar technology and have a spinning ultrasonic dector turret on the robot. This could be turned by a stepper motor, so you would know where it was pointing relevant to the robots fixed chassis...

That's certainly a possibility -- but in the fullness of time I hope to have my Pixy machine vision sensor mounted on top of the robot ... I'll think about it...

Max The Magnificent
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Re: cool stuff
Max The Magnificent   11/2/2013 11:09:07 AM
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@jjulian274: You could also use it for chasing after a lighted object (say a ball), and use the rangers to guide you in to pick it up.

That's what I want to use my Pixy Machine Vision sensor for.

David Ashton
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Re: cost cutting cool stuff
David Ashton   11/2/2013 6:25:55 AM
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True, Crusty, it would look VERY cool.  And Max has a spare motor driver on his arduino shield, so he could use that to rotate the US rangefinder.  

Crusty1
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Re: cost cutting cool stuff
Crusty1   11/2/2013 4:36:27 AM
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@Max,Duane,David:

Does Max need multiple ultrasonic sensors?

Why not take a leaf out of the radar technology and have a spinning ultrasonic dector turret on the robot. This could be turned by a stepper motor, so you would know where it was pointing relevant to the robots fixed chassis.

It might also look very cool like Robby from the Forbidden Planet ?

 

David Ashton
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Re: Even neutrinos?
David Ashton   11/1/2013 7:49:11 PM
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@Paul....and Duane / Jjulian above... "[perhaps also illumination determination--cloudy, partly cloudy, sunny].)"

THAT'S what you can use the LDR for!@

Paul A. Clayton
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Even neutrinos?
Paul A. Clayton   11/1/2013 7:10:24 PM
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"You name it, and my robot will sense it."

What kind of shielding are you planning to use to minimize false positives in your neutrino sensor? ☺

Are you also planning to detect ionizing radiation? Gas leaks? Carbon monoxide? Pollen/particulate count? (With temperature, humidity, and barometric pressure, the robot might be half way to being a mobile weather station--lacking wind speed and direction and precipitation measurement [perhaps also illumination determination--cloudy, partly cloudy, sunny].)

jjulian274
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Re: cool stuff
jjulian274   11/1/2013 4:41:08 PM
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I'm not sure either, but my guess would be that the LDR is there for a light following robot.  You can follow a light and tell if there are any obsticals in the way.


At least that is why I would put it there.  That's my story and I'm sticking to it.


You could also use it for chasing after a lighted object (say a ball), and use the rangers to guide you in to pick it up.

Duane Benson
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Re: cool stuff
Duane Benson   11/1/2013 12:58:10 PM
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David - I don't know why it's there, but one of the I2C commands will return the light level from the LDR.

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