This segment is the latest in a series of Arduino tutorials posted by Tronixstuff.
Tutorial: using Ping ultrasonic sensor with Arduino - [Link]
DIY ultrasonic range finder - [Link]
Meridith Perry, a recent graduate of the University of Pennsylvania (USA), has developed a novel method for powering electronic devices wirelessly. Christened ‘uBeam’, the method uses ultrasonic energy that is beamed from a mains-powered transmitter to a piezoelectric receiver plugged into the device to be powered.
Ms Perry came up with the idea for the uBeam system while still at university, when she forgot to take the charger for her laptop computer to a lecture and was left with a dead battery. She started thinking about ways to transmit energy wirelessly and ultimately came up with the idea of ultrasonic transmission. [via]
Novel ultrasound system provides wireless power - [Link]
The Park Ranger is an ultrasonic-ranging prototype designed to assist drivers who are backing into tight areas. The ranger uses ultrasonic pings to measure distance to the object behind and indicates this distance by sending audible tones to your FM radio. Optional panel-mount LEDs offer visual aid for calibration as well as warning drivers behind you.
The intention of this project is to demonstrate the Amani64ʼs ability to serve as a rapid-prototyping tool for applications typically covered by proprietary modules. While a commercial ultrasonic-ranging module could be used in this project, the Amani64 is used in instead to tailor the system to our exact needs. The user can drop in blocks of IP, whether open-source or their own, to create a custom application over which they have full control and ownership. A CPLD-based prototyping board is useful for any application that requires logical circuits, whether they be parallel or sequential, that space, cost, and vendor-delivery times are a concern.
DIY Park Ranger – [Link]
Kerry Wong needed some ultrasonic range finders for a project so he build his own. He writes:
The theory behind ultrasonic ranging is quite simple. Typically a short ultrasonic burst is transmitted from the transmitter. When there is an object in the path of the ultrasonic pulse, some portion of the transmitted ultrasonic wave is reflected and the ultrasonic receiver can detect such echo.
He provides schematic and code on the link below.
A Sensitive DIY Ultrasonic Range Sensor - [Link]
This project is a DIY metal hunting robot that uses a Parallax microcontroller to hunt down metal objects while avoiding bumping into objects. [via]
To avoid any collision with other objects (such as furniture), the robot uses an ultrasonic range detector (radar) as well as 2 side infrared range detectors. The radar, placed on top of the robot, searches the area infront of the moving robot for obstacles. If one is located within close proximity (30cm), the radar scans the area (rotates with the use of a motor) for any other possible paths which contain no obstacles within range. The 2 side IR range sensors make sure that if something misses the range of the radar, a side collision won’t occur.
DIY Metal Hunting Robot - [Link]
This project is a simple bat detector that allows you to hear any ultrasonic sound. It digital scales the ultrasonic sound down to human hearing range (20 Hz to 20 kHz). The bat emits ultrasonic range from 9 kHz up to 200 kHz! Therefore, to enable us to hear the frequency, you should create a bat detector device that can analyze up to 20 kHz. To achieve that, digital frequency division is used.
The Ultrasonic Bat Detector – [Link]