Ultrasonic

1. Ultrasonic Transmitter - This is the schematics for an Ultrasonic Transmitter which will send a signal out into it's surrounding area.
   
2. Ultrasonic Receiver - The photo depicts the schematics for an Ultrasonic Receiver which will detect the signal from the Ultrasonic Transmitter once it bounces off from an object.
3. A Cheap Ultrasonic Range Finder - Here we use an ultrasonic piezzo transmitter with its receiver, they are very efficient, easy to find and quite cheap.
4. Ultrasonic Range & Imager - This is the electronic schematic of the homebuilt Sonar.