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Re: Can you use this?
Yes. We've used ultrasonics on our bot before.
The ones we used were analog sensors. The "ultrasonic" block in easyC, if that's what you're using, calls for a digital input plus an interrupt. I would say that most ultrasonic sensors (correct if wrong) have an analog output, and you simply need to use an analog input block.
Of course if you are using MPLAB or similar, you don't even need to worry about this confusion.
Ultrasonics have worked GREAT for us in the past. I'll see if I can dig up a link for the model we used (I remember the cost was similar (about 35 dollars), but it only had one sensor onboard. It was accurate to about an inch up to 30 feet.
Jacob
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