This is a simple active sonar microcontroller, which also includes the logic for a passive sonar.
Its primary function is to handle the task of converting raw sonar data into a readable and comprehensible format. This controller enables you to zoom in and out of your detection range, as well as isolate targets for more detailed information about their range.
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[*] In passive mode you can isolate (for example via keypad) the desired target signature to get a better reading.
[*] In active mode you can use the touchscreen to get information about the range and the bearing of a target.
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