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Ultrasonic robot avoids walls

Posted by Mike Redrobe | Posted in Arduino | Posted on 21-05-2012

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Using an ultrasonic sonar ranger to avoid walls – and people’s feet – before hitting them:

At first I was getting plenty of false readings, so here’s the first run, pausing and verifying before turning:

With faster code, and not stopping:

Improved accuracy, so it detects smaller objects like feet:

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