[51] generating variable square wave range from 1KHz to 30KHz.

[vps11111]

hi friends i want to some direction about my requirement..
i want to vary frequency as i want from pc...

if i entered 1.1 on my pc then i have to got 1.1KHz frequency(square wave) from the controller..
please help me,,,thanx in advance

 

[amimo816]

Which uc will you use?

You could send the value using uart and a terminal program, then use the value in the uc to generate a squarewave with that frequency with the help of a timer.

 

[paulfjujo]

hello

From RS232 link beetwen PC and a PIC18F26k22
with (or without DDS AD9850 and other interface as LCD ,Joystick..)
You can request a frequency from 1Hz up to 40000Hz SQAURE (or other with the same as Sunsu,triangle,saw..)

details on my web page : double DDS