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Neopixel Ring

This plugin is for people with onboard computers to control the Neopixel ring from ARC. This is used in Rafiki.

+ How To Add This Control To Your Project (Click to Expand)
  1. Make sure you have the latest version of ARC installed.
  2. Select the Get button in this page to download the archive file.
  3. Double click the downloaded archive file to execute installer.
  4. The installer will add this control to ARC.
  5. Load ARC and press the Project -> Add Control button from the menu.
  6. Choose the Misc category tab.
  7. Press the Neopixel Ring icon to add the control to your project.

Manual

I will work on adding the ability to have this run from a script. All of this is doable through a script anyway, but I wanted to give a user interface to the work that has been done.

This update displays the command that needs to be passed via serial. you can copy and paste this command. Also, it allows you to either run the light or not based on a check box. It allows you to quickly test, and then copy the commands for the arduino sketch that runs the NeoPixel listed below.

At some point, I will put out an update that will allow this to run from an EZ-B port.

I have included the code for this project if anyone wants to modify it. The only requirement is that you share your code. This is common for development based on someone else's shared code.

There are a couple of bugs in this. I wanted to put this out for a friend who is trying to do something similar to what I am doing. This would be a good tool to use to allow you to quickly change settings so that you know what scripting commands to use and bypass this tool.

Your Arduino controller will run the code found at this
forum post.

The code below works with Arduino IDE 1.6.3 with the 1.0.3 version of the Adafruit NeoPixel library,

To download this version of the Arduino IDE ==> (previous versions link)

To get the correct version of the NeoPixel library, in the Arduino IDE, choose Sketch, then Include Library, then Manage Libraries. Find Adafruit NeoPixel in the list and then set the version to 1.0.3 and choose the Install button.

Shared code = Neopixel.zip:D


This sketch fixes a minor bug that existed in the last code published by RobertL184. It works with Arduino 1.8.3 and the NeoPixel library v1.1.1

If you want to change the pin that the arduino is connecting to the NeoPixel on, change the 2nd parameter in line 321. If you want to change the number of NeoPixles in the ring or device, change the first parameter in line 321.

Example

Code:


NeoPatterns Ring1(24, 6, NEO_GRB + NEO_KHZ800, &Ring1Complete);

is for a 24 pixel NeoPixel that has its input pin connected to pin 6 on the Arduino.

Code:


/* real time Serial Controlled Neopixel Ring -- Code not tested yet
/
/ Serial Commands
/ Cr1,g1,b1 - Set whole Ring to same color specified by r1,g1,b1
/ Rt,d - Rainbow with interval t and direction d
/ Tr1,g1,b1,r2,g2,b2,t,d - Theater Chase between color r1,g1,b1 and color r2,g2,b2 with interval t and direction d
/ Wr1,g1,b1,t,d - Color Wipe in color r1,g1,b1 with interval t and direction d
/ Fr1,g1,b1,r2,g2,b2,s,t,d - Fade between color r1,g1,b1 and color r2,g2,b2 in s steps with interval t and direction d
/ Sr1,g1,b1,t - Scanner with color specified by r1,g1,b1 and interval t
/ Pp,r1,g1,b1 - Set individual pixel p to color specified by r1,g1,b1
/
/ p = pixel number
/ r1 = 1st color red values 0 to 255
/ g1 = 1st color greern values 0 to 255
/ b1 = 1st color blue values 0 to 255
/ r2 = 2nd color red values 0 to 255
/ g2 = 2nd color greern values 0 to 255
/ b2 = 2nd color blue values 0 to 255
/ s = number of steps
/ t = interval time values 0 to 255
/ d = direction 0 = Forward 1 = Backward
*/

#include

// Pattern types supported:
enum pattern { NONE, RAINBOW_CYCLE, THEATER_CHASE, COLOR_WIPE, SCANNER, FADE };
// Patern directions supported:
enum direction { FORWARD, REVERSE };

// NeoPattern Class - derived from the Adafruit_NeoPixel class
class NeoPatterns : public Adafruit_NeoPixel
{
public:

// Member Variables:
pattern ActivePattern; // which pattern is running
direction Direction; // direction to run the pattern

unsigned long Interval; // milliseconds between updates
unsigned long lastUpdate; // last update of position

uint32_t Color1, Color2; // What colors are in use
uint16_t TotalSteps; // total number of steps in the pattern
uint16_t Index; // current step within the pattern

void (*OnComplete)(); // Callback on completion of pattern

// Constructor - calls base-class constructor to initialize strip
NeoPatterns(uint16_t pixels, uint8_t pin, uint8_t type, void (*callback)())
:Adafruit_NeoPixel(pixels, pin, type)
{
OnComplete = callback;
}

// Update the pattern
void Update()
{
if((millis() - lastUpdate) > Interval) // time to update
{
lastUpdate = millis();
switch(ActivePattern)
{
case RAINBOW_CYCLE:
RainbowCycleUpdate();
break;
case THEATER_CHASE:
TheaterChaseUpdate();
break;
case COLOR_WIPE:
ColorWipeUpdate();
break;
case SCANNER:
ScannerUpdate();
break;
case FADE:
FadeUpdate();
break;
default:
break;
}
}
}

// Increment the Index and reset at the end
void Increment()
{
if (Direction == FORWARD)
{
Index++;
if (Index >= TotalSteps)
{
Index = 0;
if (OnComplete != NULL)
{
OnComplete(); // call the comlpetion callback
}
}
}
else // Direction == REVERSE
{
--Index;
if (Index <= 0)
{
Index = TotalSteps-1;
if (OnComplete != NULL)
{
OnComplete(); // call the comlpetion callback
}
}
}
}

// Reverse pattern direction
void Reverse()
{
if (Direction == FORWARD)
{
Direction = REVERSE;
Index = TotalSteps-1;
}
else
{
Direction = FORWARD;
Index = 0;
}
}
//------------------------------------------------------------
//Completion Routines - get called on completion of a pattern
//------------------------------------------------------------

// Initialize for a RainbowCycle
void RainbowCycle(uint8_t interval, direction dir = FORWARD)
{
ActivePattern = RAINBOW_CYCLE;
Interval = interval;
TotalSteps = 255;
Index = 0;
Direction = dir;
}

// Update the Rainbow Cycle Pattern
void RainbowCycleUpdate()
{
for(int i=0; i< numPixels(); i++)
{
setPixelColor(i, Wheel(((i * 256 / numPixels()) + Index) & 255));
}
show();
Increment();
}

// Initialize for a Theater Chase
void TheaterChase(uint32_t color1, uint32_t color2, uint8_t interval, direction dir = FORWARD)
{
ActivePattern = THEATER_CHASE;
Interval = interval;
TotalSteps = numPixels();
Color1 = color1;
Color2 = color2;
Index = 0;
Direction = dir;
}

// Update the Theater Chase Pattern
void TheaterChaseUpdate()
{
for(int i=0; i< numPixels(); i++)
{
if ((i + Index) % 3 == 0)
{
setPixelColor(i, Color1);
}
else
{
setPixelColor(i, Color2);
}
}
show();
Increment();
}

// Initialize for a ColorWipe
void ColorWipe(uint32_t color, uint8_t interval, direction dir = FORWARD)
{
ActivePattern = COLOR_WIPE;
Interval = interval;
TotalSteps = numPixels();
Color1 = color;
Index = 0;
Direction = dir;
}

// Update the Color Wipe Pattern
void ColorWipeUpdate()
{
setPixelColor(Index, Color1);
show();
Increment();
}

// Initialize for a SCANNNER
void Scanner(uint32_t color1, uint8_t interval)
{
ActivePattern = SCANNER;
Interval = interval;
TotalSteps = (numPixels() - 1) * 2;
Color1 = color1;
Index = 0;
}

// Update the Scanner Pattern
void ScannerUpdate()
{
for (int i = 0; i < numPixels(); i++)
{
if (i == Index) // Scan Pixel to the right
{
setPixelColor(i, Color1);
}
else if (i == TotalSteps - Index) // Scan Pixel to the left
{
setPixelColor(i, Color1);
}
else // Fading tail
{
setPixelColor(i, DimColor(getPixelColor(i)));
}
}
show();
Increment();
}

// Initialize for a Fade
void Fade(uint32_t color1, uint32_t color2, uint16_t steps, uint8_t interval, direction dir = FORWARD)
{
ActivePattern = FADE;
Interval = interval;
TotalSteps = steps;
Color1 = color1;
Color2 = color2;
Index = 0;
Direction = dir;
}

// Update the Fade Pattern
void FadeUpdate()
{
// Calculate linear interpolation between Color1 and Color2
// Optimise order of operations to minimize truncation error
uint8_t red = ((Red(Color1) * (TotalSteps - Index)) + (Red(Color2) * Index)) / TotalSteps;
uint8_t green = ((Green(Color1) * (TotalSteps - Index)) + (Green(Color2) * Index)) / TotalSteps;
uint8_t blue = ((Blue(Color1) * (TotalSteps - Index)) + (Blue(Color2) * Index)) / TotalSteps;

ColorSet(Color(red, green, blue));
show();
Increment();
}

// Calculate 50% dimmed version of a color (used by ScannerUpdate)
uint32_t DimColor(uint32_t color)
{
// Shift R, G and B components one bit to the right
uint32_t dimColor = Color(Red(color) >> 1, Green(color) >> 1, Blue(color) >> 1);
return dimColor;
}

// Set all pixels to a color (synchronously)
void ColorSet(uint32_t color)
{
for (int i = 0; i < numPixels(); i++)
{
setPixelColor(i, color);
}
show();
}

// Returns the Red component of a 32-bit color
uint8_t Red(uint32_t color)
{
return (color >> 16) & 0xFF;
}

// Returns the Green component of a 32-bit color
uint8_t Green(uint32_t color)
{
return (color >> 8) & 0xFF;
}

// Returns the Blue component of a 32-bit color
uint8_t Blue(uint32_t color)
{
return color & 0xFF;
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos)
{
WheelPos = 255 - WheelPos;
if(WheelPos < 85)
{
return Color(255 - WheelPos * 3, 0, WheelPos * 3);
}
else if(WheelPos < 170)
{
WheelPos -= 85;
return Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
else
{
WheelPos -= 170;
return Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}
}
};
void Ring1Complete();

// Define some NeoPatterns for the two rings and the stick
// as well as some completion routines
NeoPatterns Ring1(24, 6, NEO_GRB + NEO_KHZ800, &Ring1Complete);

int red1 = 0; // red value
int green1 = 34; // green value
int blue1 = 12; // blue value
int red2 = 0; // red value
int green2 = 34; // green value
int blue2 = 12; // blue value
int my_pixel = 0; // pixel number
int s = 5; // step value
int t = 10; // interval time value
int d = 0; // direction indicator 0= Forward 1 = Backward

// Initialize everything and prepare to start
void setup()
{
Serial.begin(9600);
Serial.setTimeout(10); // set serial timeout

// Initialize all the pixelStrips
Ring1.begin();
Ring1.ColorSet(Ring1.Color(0, 0, 0));
}

// Main loop
void loop()
{
int inchar;

if (Serial.available() > 0) {
inchar = Serial.read();
if ( inchar == 'C') { // string should start with C
red1 = Serial.parseInt(); // then an ASCII number for red
green1 = Serial.parseInt(); // then an ASCII number for green
blue1 = Serial.parseInt(); // then an ASCII number for blue
Ring1.ActivePattern = NONE;
Ring1.ColorSet(Ring1.Color(red1, green1, blue1));
}
if ( inchar == 'R') { // string should start with R
t = Serial.parseInt(); // then an ASCII number for interval
d = Serial.parseInt(); // then an ASCII number for direction
if (d ==0) {
Ring1.RainbowCycle(t, FORWARD);
} else {
Ring1.RainbowCycle(t, REVERSE);
}
}
if ( inchar == 'F') { // string should start with F
red1 = Serial.parseInt(); // then an ASCII number for red
green1 = Serial.parseInt(); // then an ASCII number for green
blue1 = Serial.parseInt(); // then an ASCII number for blue
red2 = Serial.parseInt(); // then an ASCII number for red
green2 = Serial.parseInt(); // then an ASCII number for green
blue2 = Serial.parseInt(); // then an ASCII number for blue
s = Serial.parseInt(); // then an ASCII number for steps
t = Serial.parseInt(); // then an ASCII number for interval
d = Serial.parseInt(); // then an ASCII number for direction
if (d ==0) {
Ring1.Fade(Ring1.Color(red1, green1, blue1), Ring1.Color(red2, green2, blue2), s, t, FORWARD);
} else {
Ring1.Fade(Ring1.Color(red1, green1, blue1), Ring1.Color(red2, green2, blue2), s, t, REVERSE);
}
}
if ( inchar == 'T') { // string should start with T
red1 = Serial.parseInt(); // then an ASCII number for red
green1 = Serial.parseInt(); // then an ASCII number for green
blue1 = Serial.parseInt(); // then an ASCII number for blue
red2 = Serial.parseInt(); // then an ASCII number for red
green2 = Serial.parseInt(); // then an ASCII number for green
blue2 = Serial.parseInt(); // then an ASCII number for blue
t = Serial.parseInt(); // then an ASCII number for interval
d = Serial.parseInt(); // then an ASCII number for direction
if (d ==0) {
Ring1.TheaterChase(Ring1.Color(red1, green1, blue1), Ring1.Color(red2, green2, blue2), t, FORWARD);
} else {
Ring1.TheaterChase(Ring1.Color(red1, green1, blue1), Ring1.Color(red2, green2, blue2), t, REVERSE);
}
}
if ( inchar == 'W') { // string should start with W
red1 = Serial.parseInt(); // then an ASCII number for red
green1 = Serial.parseInt(); // then an ASCII number for green
blue1 = Serial.parseInt(); // then an ASCII number for blue
t = Serial.parseInt(); // then an ASCII number for interval
d = Serial.parseInt(); // then an ASCII number for direction
if (d ==0) {
Ring1.ColorWipe(Ring1.Color(red1, green1, blue1), t, FORWARD);
} else {
Ring1.ColorWipe(Ring1.Color(red1, green1, blue1), t, REVERSE);
}
}
if ( inchar == 'S') { // string should start with S
red1 = Serial.parseInt(); // then an ASCII number for red
green1 = Serial.parseInt(); // then an ASCII number for green
blue1 = Serial.parseInt(); // then an ASCII number for blue
t = Serial.parseInt(); // then an ASCII number for interval
Ring1.ColorWipe(Ring1.Color(red1, green1, blue1), 50, FORWARD);
Ring1.ColorSet(Ring1.Color(0,0, 0));
Ring1.Scanner(Ring1.Color(red1, green1, blue1), t);
}
if ( inchar == 'P') { // string should start with P
my_pixel = Serial.parseInt(); // then an ASCII number for pixwel
red1 = Serial.parseInt(); // then an ASCII number for red
green1 = Serial.parseInt(); // then an ASCII number for green
blue1 = Serial.parseInt(); // then an ASCII number for blue
Ring1.ActivePattern = NONE;
Ring1.setPixelColor(my_pixel, Ring1.Color(red1, green1, blue1));
Ring1.show();
}
}

// Update the ring.
Ring1.Update();
}
// Ring1 Completion Callback
void Ring1Complete()
{
if ((Ring1.ActivePattern == RAINBOW_CYCLE) || (Ring1.ActivePattern == FADE) ||
(Ring1.ActivePattern == THEATER_CHASE) || (Ring1.ActivePattern == SCANNER)){
Ring1.Reverse();
}
}


This will work with the plugin still. The commands don't change so there is no modification to the plugin.

#1  
Hi DJ Sures, 
my name is Mitch and I have an ezb tiny and an Arduino nano , i have a code for neopixel ring on my nano  and im using d5 on tiny to send serial to RX on nano . after reading this tutorial where you entered COM6 do I put RX , my problem im having is I can see the tiny connected on my computer (I can see temp ,battery voltage etc) but when I try and send serial commands too change the colour nothing happens im sure the code on nano is fine and baud rate is set to 9600 as it also says in code on nano .
so im not sure what I may be doing wrong .
any help would be appreciated.
regards mitch
#2  
Hi DJ,
Mitch here, can i use an arduino nano with the ezb tiny .
I have a code for neopixels on my nano and ezb serial from D5 to rx on nano but cant get it to communicate, not sure weather i was using wrong add on or its because im using a nano. 
Any help or links would be appreciated, I've looked at so many tutorials and videos but haven't found one using the rx as serial input. 
Regards mitch
Synthiam
#3   — Edited
Mitch - you can follow the instructions on this skill control for neo pixels
Synthiam
#4  
@Mitch

The IoTiny can't use the same code as the EZ-B when it comes to serial as it doesn't have a hardware UART. You can't use UARTwrite(). You will instead have to use the SendSerial() command.
#7   — Edited
Hi Jeremie, I have it working know on my computer I've uploaded it to the cloud to public, the only issue I have now is I wanted to use this on the mobile phone app but it doesn't seem to work with a touch screen
Synthiam
#8  
I checked out your app on my phone and I see where the issue is. The script manager control isn't supported in the mobile interface. This doesn't mean you can't activate your scripts with mobile, it just means you can't use the script manager to do it. What you want to do is add a "mobile interface control" to your ARC project and then you can make mobile buttons to activate your scripts. Once you save the app to the cloud again, select to have the mobile interface appear as default, that will make it easy to press the buttons (activate the scripts) you made.

Please spend some time looking into the mobile interface builder, I guarantee you'll have fun building your own app!
#9  
Thanks Jeremie, i started playing with that addon last night before it got to late, it looks promising. Thankyou
#10   — Edited
Jeremie, do i need something else in my controller i can change colors with my buttons using mobile interface on pc but not on mobile phone ezb is connected to it says do i need some other wifi addon .
Regards mitch
Synthiam
#11   — Edited
User-inserted image
Are there errors in the log? Look at the log and see what it reads after you’ve connected to the ezb and pressed the buttons.
#12  
Thanks Dj i will have a look tomorrow and see what the log says, its getting late here in Australia
#13   — Edited
User-inserted image


User-inserted image
DJ Sures here's my log, I had it connected with the mobile interface and tried changing colours, with no effect on it and that was the log.
Regards Mitch
I tried it again and it worked
Netherlands
#14  
The plugin has a problem with the migration to ARC... Can't load or update it;)