Help with adding to my code

toxsickcity

Firstly I don't have your setup, so it's very hard to give you code that works.

All I can do is provide some pointers to help you work out what is happening.

The numbers at lines 89 and 95 (turn on line numbering under preferences)

  rgb[0] = (rgbval & 0x00FF0000) >> 16; // there must be better ways

  rgb[1] = (rgbval & 0x0000FF00) >> 8;

  rgb[2] = rgbval & 0x000000FF;

are getting a value using some maths.

The 0x signifies a hex number and if you plug it into windows calculator (macs must have an equivalent) on programmer mode you can display the binary equivalent.

(rgbval & 0x00FF0000) is an AND function, where the 24bit number held in rgbval is AND'ed with hex FF0000.

This bascially extracts the last 8 bits of the rgbval (ie the MSB 8 bits).

The >> 16 signifies shifting the result 16 places towards the decimal point.

So they start with a 24 bit number and seperate it into three 8 bit numbers.

Because you changed the FF00 into 0000 you have effectively removed the middle parts of the rgbval number, which I presume is the green .

There is a brightness setting here in line 52 (and 53 for the other set)

long bright[3] = { 107, 67, 256};

If the green LED is on pin 10, then you could try changing the 67 to something lower instead.

Original sketch

This sketch seems to add up lots of things, store as a large number then break it down to individually control the pins.

For your Red or Blue, I'm wondering if you start with a neutral colour at (20 degC), and if it's lower then increase the Blue, or hotter increase the red.

You could speed it up by stepping one up while stepping the other down to double the effect.

Hope this helps

Mark

Thanks so much for your help,

I have played with these values and yes I does change how green operates..

It is helpful but with wanted to add that 3rd set of LED strip and sensor,

I need to remove the pin usage.

Can I ask for your explanation of the following?

Line 24,  #define RED       9// pin for red LED

How does it know to use 3 pins for the pins 9, 10 and 11?

is it something with the Line 61 and 62?

  for (k=0; k<3; k++) {

    pinMode(RED + k, OUTPUT);

does K represent how many pins to use?

as I was helped with adding a 2nd set of pwm pins as the code wanted to use pins 3,4,5 for the 3,5,6 i have configured

so the code is different, it states to use pins 3,5,6 with the

Line 34 int secondPins [] = { 3,5,6};

vs Line 24 which only says  #define RED       9// pin for red LED

at this stage I only want to play with the code to see if I can remove 1 pin from each RGB strip and I will play with the colouring later..

the code system in the software is also pretty good as it kind of tells me whats wrong when I randomly remove code to trial editing hjahaha

i hope you can shed some light on this..

Thanks for your interest and help,

Would you like me to draw a schematic diagram and attach photos of the way I have it wired?

toxsickcity

Which one do I start with ....I'm at work so I don;t have full access to the IDE.

Yes basically line 61, 62 are definng the other pins.

RED (9) + k (0) = 9, then RED (9) + k (1) = 10, then RED (9) + k (2) = 11 is how it works.

K never reaches more than 2 ...

Look at the reference under For ....  basically you specify the start (0) ; Limit (K <3) K is less than 3; increment (k++) which is K + 1.

Line 34 is defining an array.

The best way is to think of a calendar. It is months [12] and for each month they have a certain number of days.

Line 34 is saying the array called secondPins[0] contains 3, secondPins[1] contains 4, and secondPins[2] contains 5.

Because you haven't said what size the array is it is happy when there is no more data.

There are some mixtures of methods used for this sketch .... which makes it harder to get your head around.

I suggest you download this book.

https://juniorfall.files.wordpress.com/2011/11/arduino-cookbook.pdf

https://github.com/shihyu/Arduino/blob/master/books/Oreilly.Arduino.Cookbook.2nd.Edition.Dec.2011.pdf

Mark