Ultrasound based navigation

Other Hardware Home Automation
1

Hello everyone ... I've been recently diagnosed with en eye disease that results ultimatly in total blindness. For now my central sight is fine, but my perifer vision is affected which is resulting in me bumping into things, since i cannot see my feet while walking and need to constantly move my head to scan my walking area. so if i look forward i bump into something low, and if i look into my feet i bump into something in front of me.

My idea is to build a very simpel ultrasound sensor that i can attach to my lower leg/foot, and the sensor will vibrate / buzz, whenever the distance between me and the obstacle is short. The device will be controlled by an arduino nano.

I would to hear if you guys have any suggestions on how i can make such device more effective ( sleeping time / frequence of firing / another modality ... ) any suggestion will be appreciated. Thanks

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An opinion of expression get quality ultrasound sensors, not SR04's.
Consider using a LIDAR, or TOF thingy, over ultrasound.

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I'd suggest that you grab a few ultrasonic sensors and experiment. Check on the data sheet to see how much the detection cone spreads - I would think you will need a fairly narrow one to avoid alarming on things that aren't actually in your way. Also, I expect that you will want to ignore anything more than some small distance away - a meter?

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A few Arduino projects like this "walking cane for the blind" or this "third eye" have been published. Clunky, but there might be useful ideas.

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