Use of Ultrasonic sensor for measuring distance........

we already have a complete thread dedicated to similar sensor from parallax Ping))
take a look at this thread. It has all the pseudo code and information on distance measurement sensor.
http://www.8051projects.net/t27437/8051-discussion-forum/pulse-generator-using-p89c51rd2.htm... Read Compelte post
Posted by ajay_bhargav on Thu Sep 13 2012, 04:39 AM

Pulse generator using p89c51rd2

i give you pseudo code to follow..
sonarO connected to INT0 pin P3.2 not P1.0 to make things easier.


sonarO = 0; //make it o/p pin and o/p low on P3.2
sonarO = 1; //
5uS delay// or whatever u want to keep
sonarO = 0;// pulse complete L-H-L
//no delay required, prepare your controller for calculating time..
sonarO = 1;//make it i/p pin to read the pulse width
TMOD = 0x09; //Timer0, 16bit gate controlled(P3... Read Compelte post
Posted by ajay_bhargav on Fri Nov 06 2009, 10:36 AM

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