Description : The following circuit is ultrasonic range and imager circuit. Feature : one piezoelectric tranducer for tramsmit & receive, range of 2.5m, high gain. Component : crystal, resistor, capacitor, 1N4149 diode, 1N4148 diode, BC557 transistor, BC549 transistor, BF245, 4016, PIC12C509. [ele.uva.es]
