PIC Traffic Lights Controller with PIC16F84A

[gomar2010]

Hi sir...
the code that you wrote for 'There the C source code' is the one to program the PIC?
you are connecting pin 4 and 14 to 5 volts, you are connecting LM7805 to both 5 volts and 12 volts, right? you are using three capacitors 0.1, 0.1, and 100 micro farad, is that true?

[gomar2010]

what code shall i use to program the PIC?
I need green to turn for 5 seconds, yellow for 1 second, and red for 5 seconds.
Could you please tell what code i should use?

[Neo]

Thought this is submitted by one of our ROBOT.LK members, I would give you some guidance on this.

the code that you wrote for 'There the C source code' is the one to program the PIC?

what code shall i use to program the PIC?

You could program the PIC using ASM, C or Basic. C is the preferred to program in most of the cases. However you need a C compiler like Hi TECH C to compile the code for the PIC. If you use ASM, then you can use MPLAB which comes with a built-in ASM compiler.

So you can use either the ASM version or C version.

you are connecting LM7805 to both 5 volts and 12 volts, right?

When you supply 12 V to LM7805 power regulator, it makes 5V to your circuit. You could input up to 35V to 7805 according to the spec and get 5V to your circuit.

you are using three capacitors 0.1, 0.1, and 100 micro farad, is that true?

Correct. The 0.1u is the recommended minimum load capacitance to limit high frequency noise.

I need green to turn for 5 seconds, yellow for 1 second, and red for 5 seconds.

DelayBigMs function is used to delay the execution for some given milliseconds. For example, to delay 5 seconds, you need to use as below.

Code: Select all

DelayBigMs (5000); // 5000 msec = 5 sec

I think I have answered all your questions.

[nukleng]

thx