Robot face

I played about with making a robot face.  I combined a Ultrasonic Sensor (HC-SR04) and NeoPixel leds.  The leds reflect the distance – one pixel per 10 of cm.

I’m wondering if I can do SLAM – Simultaneous Location And Mapping  with a single (or a few) very-cheap ultrasonic sensor. Well, the answer is almost certainly no, but I’m very curious to see how far I can get.

face2

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