has anyone ever tried to use zircon's DMS50 sonar measure to use as a navigation tool for robots ... **broken link removed**
and converting the signal to digital?? thn sending the signal to the al89sf1
You can make your own ultrasonic ranger using the parts from an old polaroid camera, I think it's the sun 660 model. There's plenty of info on the 'net about this, just search for something like transducer and polaroid.