Sona-PIC uses a PIC16C71 to interface to a Polaroid ultrasonic ranging module and output distances over a serial port at 4800 bps.

The code for this project is available under the terms of the Free Software Foundation's General Public License, Version 2. If you agree to the terms of the license, you may download a copy in either tar or zip format:

Microchip's Application Note AN597 describes a design of an Ultrasonic Ranging system based on a PIC16C74 and a Polaroid 6500 ranging module. By taking advantage of Timer 1 of the PIC16C74 it is possible to achieve higher resolution and background operation.
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Last updated February 8, 1996

Copyright 1995, 1996 Eric Smith