Author Topic: How does the iRobot create IR beacon work?  (Read 3056 times)

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Offline Razor ConceptsTopic starter

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How does the iRobot create IR beacon work?
« on: October 24, 2009, 05:40:16 PM »
I have worked with the iRobot create, a plain version of the roomba. Like the roomba, the create has some kind of 360 degree IR sensor:


That little disc has a inverted cone-shaped mirror to presumably deflect the horizontal IR beam down vertically. But how does it detect around 360 degrees? Is there just a circle of small IR receivers?
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Offline waltr

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Re: How does the iRobot create IR beacon work?
« Reply #1 on: October 24, 2009, 06:05:09 PM »
What I recall reading is that there are four small mirrors that reflect the beacon light down to four photodetectors one for each direction.
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