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pwm using pic16f877a 4mhz
sorry for delay bungee- and thank you yes i was ultrasonic and got stuck i converted to infrared , but if you can give your circuit diagram :)
IR interfacing
I want to signal condition a photodiode line sensor output to a digital input.
Although I am using the PIC16F877a chip,
I have designed, built and tested a bank of 8 IR Transmitter/ Photodiodes pairs.
They all return 1.2 to 4.2 volts depending on a light or dark surface below...
pic 40khz
void main()
{
PORTC = 0;
TRISC = 0;
PR2 = 0b00011000 ;
T2CON = 0b00000100 ;
CCPR1L = 0b00001100 ;
CCP1CON = 0b00011100 ;
}
the problem is Pwm port is 5v all the time, is there another way to obtain 40khz without pwm
Re: pic 16f877a problem
i have programmed pic with mikroc blink led example and it worked fine once but now all pic ports 5v even mclr i bought another and still does the same thing :(( any help plz
Added after 2 hours 19 minutes:
any body answer plzzzzzzzzzzzzz!!!!!!!!!!!! i got project to do
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