More about ultrasonic (75)

10-12-2013 | The Proton robot from Elektor is a versatile platform that’s suitable for students, enthusiasts and professionals alike. The robot can opera...

6-12-2013 | A computer that receives data when when it's completely disconnected from any network. No power chord, no Ethernet cable, it's WiFi module p...

9-08-2013 | Parking in garages can sometimes be tricky as it is often difficult to know where exactly the end of the car is. A tennis ball on a strin...

13-03-2013 |  Please click on the links to download the articles from Elektor.MAGAZINE (log-in required):

1-09-2012 | This low-cost signal generator has an impressive frequency range from 250 Hz to 60 MHz. It can generate PWM signals from 250 Hz to 60 kHz, w...

1-07-2011 | This square wave generator and tester is based on audio amplifier chip type TBA820M. It is presented as a design idea for further refinement...

1-03-2011 | Looking for an audio project? This article explores the design of a DIY 50-m range directive sound beam using an array of piezo ultrasonic t...

1-07-2010 | Here’s a novel way of listening to bats over the Summer. Put the receiver — powered by four AA (R6) cells — on a window-ledge, for example,...

1-09-2008 | Using the circuit described here you can quickly and simply check whether harmful sounds with a high frequency are being produced somewhere...

1-09-2007 | Although bats are common animals, it is rare to actually catch a glimpse of one. In the dark they are practically invisible, and their ultra...