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Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.
Ultrasonic range meters
11. April 2008 - 11:40 — admin
A few schematics for ultrasonic range detectors.
The first ultrasonic range detector I've seen was the one constructed by Alberto Ricci Bitti - the "Good old" parking sonar. His construction uses only one IC and a lot of transistors, resistors, capacitors etc.
The second one is the Ultrasonic range meter with LED display, based on a bunch of the 555s and ICs for 7segment LED displays. It is a little bit sophisticated than the first one.
The same author built PIC-based ultrasonic range meter. It is the previous construction reworked with PIC16F873.