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Ultrasonic Range Meter

On these pages, I will introduce the Ultrasonic Range Meter with PIC16F873.
As for the range meter which doesn't use PIC, refer to "Ultrasonic Range Meter".
I created the PCB pattern for this circuit using EAGLE CAD.

With this circuit, the following features of PIC16F873 are used.
CaptureThe time which is reflected and returns to the object after sending out a ultrasonic is measured.
A/D converter The propagation speed of the sound changes with the temperature.
I used A/D converter to revise a display.

Hardware Software
Circuit drawing

Pattern drawing

Circuit explanation

Parts explanation

Processing explanation


Performance test