Pai mie unuia imi cam place sa ma joc cu tot felul de sirme si tranzistori - citeste radioamator. Am gasit o schema de receptor care putea fi controlat cu ajutorul PC.
Mai exact spun cei de pe acel site ca daca stiu ceva limbaj de programare as putea scrie un program care va trimite la portul paralel (parallel door) un numar de la 0 la 255 care face nu stiu ce....
Mai bine pun aici textul original - in engleza ....
- If you know some language of planning as C ++, PASCAL, VISUAL BASIC, DELPHI etc you can write some program which will send in the parallel door (378 I) of PC a number from 0 until 255 checking thus the tendency of expense of simple D/A of converter (that it is in blue frame) and consequently and frequency of radio via passage VARICAP.
(As long as grows the number that sends in the parallel door, so much minimizes the frequency that receives the radio.)
si mai bine un link direct la site:
http://www.electronics-lab.com/projects/rf/020/index.html