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check this site out.. you will get some idea out of it..
TV transmitter circuit using only 2 transistors , operates from 12V
TV TRANSMISSION MAINLY CONSISTS OF FM MODULATION ...
(the 1st transistor is used for modulating sound and the 2nd transistor is used for modulating video signal to the...
Thanks MVS SARMA..
Am trying with the timer 0 and prescaler lik the ham radio people just did...
i am not that good in assembly... so have to start from scarp in C...
@ mvs sarma
Aktually the pic directly cannot reach a frequency like 30 Mhz since the 18F models themselves are upto 12MIPS only...
so it doesnt matter whether it is PIC16F628A or PIC16F72 greatly...
Depends on the prescaler... thats the reason i said adding a frequency divider circuit could...
The Opamp (is used only as a Schmitt Trigger) can be any part that works above 5Mhz .... I have an updated design using a schmitt trigger (74HC14)... it will be easier and much cheaper than the opamp version i guess...
As for the Capacitor values it should be 15pF .... (but its a non critical...
This frequency meter is capable of frequencies upto 5Mhz . It has an error rate of 5% at any frequency. (by averaging ..)
The compiler used is HI-TECH C . (basically the program can be recompiled for any PIC which has a CCP1 module and timer 1).
Xtal is 20 MHz.
The opamp can be any model that...
well , there must be a inbuilt function, something like inttostr (you might need to convert the int value to a string before displaying to a character LCD). I use HI-TECH C so i don't know about c18 properly..!
INFO please.... what LCD is it..?
try in the compiler help for inbuilt library...
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