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x=128
y=129
z=1

Add them using int8 arithmetic, and the result is 128+129+1 = 258 -> int8 _2_. So the sum of these three numbers will test as <5.

Arithmetic wraps. Go past the larges ...

If the sum of adcR+adcG+adcB > 255 the program goes into random_color mode. Why does that happen? Because you told it to.

You've declared each of the three variables as int8. If their sum goes ...

What do you mean by this?
What is a good efficient way to check each channel for changes. Could I just use an if x1 != x2 update pwm or is there a better way?
Are you wanting a neat way to:-

(1) ...

@Mike, I was looking for an if statement to check if the value has changed vs constantly updating the pwm duty cycle. Since the adc values have some variation a simple if statement will not work. If t ...

Small Update:

I have all 3 A/D and PWM working and updating. I am now able to manually adjust 4096 different colors. I am now going to start to clean up the code make it run more efficient and star ...

That seems to have fixed the error. I tried int10 and 12 but not int16. For what I am using the 8 bit adc is more than enough. I wanted to test with 10 12 and 16. Here is the beginning of my work in p ...

Well I have had some free time to play with some examples and do some testing. I am having an issue with A/D above 8 bit. Using 8 bit I can adjust a potentiometer and change the blink rate of the led. ...

The 18F26K80 uses 12 bit and the registers are setup much differently. It is a good reference but still does not make it clear for how I would calculate TAD and Tacq for my application. With the ADCON ...

Thanks PCM. I will look more into that after I understand how the A/D timing functions and how to properly configure the ADCON2 register.

Can someone "dumb" down the setting of adcon2?
To begin I won't be using an interrupt until I learn more about those also.

What I have so far from the data sheet

ADCON0 = 0b00000000
...

Awesome I can work in debug and external power mode. I am going to have to read more about how the fuses work as those seem to be very important.

The next step is to learn the hardware A/D and see ...

The simple program worked and I was able to go step by step in debug mode. I figured the problem to be the fuses that I was using. So now I have both programs running in debug mode. When I unplug the ...

To start off I am about as green as a beginner can get. I don't know C very well, I don't know assembly, and I have never used uC's. I however am pretty proficient at building circuits and learning fr ...