adafruit / lpd8806

Arduino library for LED strips and pixels using LPD8806 (and probably LPD8803/LPD8809)

Arduino library for LPD8806

This Library was written for the LPD8806 PWM LED driver chips, strips and pixels. But the LPD8803/LPD8809 will probably work too.

Where to Buy?

Pick some up at Adafruit Industries

lpd8806's Issues

Doxygen index page is blank

Updated to use hardware SPI

Per request, a link to the hardware-SPI fork of this library:
https://github.com/cjbaar/LPD8806
--CJ

Enhanced example

I've just been playing with a new light strip using the example from here, I've put a slightly more funky one with animated rainbows up at https://gist.github.com/tomoinn/5969009 if that's of any interest.

LEDBeltKit_alt compile errors with Teensy3

I'm getting these compile errors when trying to upload the LEDBeltKit_alt sketch to Teensy 3.

FWIW - The strandtest and LEDBeltKit sketches works normally.

---

LEDbeltKit_alt.pde: In function 'void callback()':
LEDbeltKit_alt.pde:162:62: error: call of overloaded 'gamma(int)' is ambiguous
LEDbeltKit_alt.pde:162:62: note: candidates are:
In file included from /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/WProgram.h:6:0,
from /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/Arduino.h:1,
from /Applications/Arduino.app/Contents/Resources/Java/libraries/SPI/SPI.h:15,
from LEDbeltKit_alt.pde:20:
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/arm-none-eabi/bin/../lib/gcc/arm-none-eabi/4.7.2/include-fixed/math.h:287:15: note: double gamma(double)
LEDbeltKit_alt.pde:82:6: note: byte gamma(byte)
LEDbeltKit_alt.pde:163:62: error: call of overloaded 'gamma(int)' is ambiguous
LEDbeltKit_alt.pde:163:62: note: candidates are:
In file included from /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/WProgram.h:6:0,
from /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/Arduino.h:1,
from /Applications/Arduino.app/Contents/Resources/Java/libraries/SPI/SPI.h:15,
from LEDbeltKit_alt.pde:20:
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/arm-none-eabi/bin/../lib/gcc/arm-none-eabi/4.7.2/include-fixed/math.h:287:15: note: double gamma(double)
LEDbeltKit_alt.pde:82:6: note: byte gamma(byte)
LEDbeltKit_alt.pde:164:62: error: call of overloaded 'gamma(int)' is ambiguous
LEDbeltKit_alt.pde:164:62: note: candidates are:
In file included from /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/WProgram.h:6:0,
from /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/Arduino.h:1,
from /Applications/Arduino.app/Contents/Resources/Java/libraries/SPI/SPI.h:15,
from LEDbeltKit_alt.pde:20:
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/arm-none-eabi/bin/../lib/gcc/arm-none-eabi/4.7.2/include-fixed/math.h:287:15: note: double gamma(double)
LEDbeltKit_alt.pde:82:6: note: byte gamma(byte)

Support RGB color format and not just GRB

It would be nice if the library support code like this:

strip.setPixelColorRGB(0, 0xFF0000);  // RED
strip.setPixelColorRGB(1, 0x00FF00);  // GREEN
strip.setPixelColorRGB(2, 0x0000FF);  // BLUE
strip.setPixelColorRGB(3, 0xFFFFFF);  // WHITE

Maximum LED

Hi
May I know how many LED does the library can drive
seems the Arduino would freeze when more than 160 LEDs
thanks

Intel Edison

Compiling for an Intel Edison board throws a "F_CPU was not declared in this scope" error, in line 201 of LPD8806.cpp

It may be that F_CPU is not defined for Intel Edison boards?

Typo in README

Just a small issue - the README says:
Place the LPD8806 library folder your <arduinosketchfolder>/libraries/ folder,

I think the word "in" is missing before "your," and also the <arduinosketchfolder> part isn't showing up in the markdown - you have to escape the < character.

Thank you for making this :)

Multiple includes in one project are not possible

Would it be possible to wrap a

#ifndef __LPD8806_H__
#define __LPD8806_H__

[class]

#endif

around the class definition in the .h file so one can include the .h file multiple times in one project?

Checking for pixels out of bounds is not properly implemented

In the setPixelColor method, should we check for n >= 0, in addition to the n < numLEDs.

Adding line depends=TimerOne makes library incompatible with platformio-esp32-arduindo config.

Had problems with this line using this library in PlatformIO

LPD8806/library.properties

Line 10 in a22f8ca

depends=TimerOne

depends=TimerOne

My project platformio.ini config:
[env:esp32doit-devkit-v1]
platform = espressif32
board = esp32doit-devkit-v1
framework = arduino

It seems that TimerOne doesn't compile in this config. I dropped back to 1.0.1 without this line and all is good.
Just FYI
Bleep,

First green LED illuminating during clock pulse

Just a reminder to review the comments posted at http://forums.adafruit.com/viewtopic.php?f=47&t=23087
The clock pulse appears to light the first green LED. This happens even with the original library, although it is dimmer. Note that I don't think this is a software issue. I can produce the effect with the minimal sketch posted in the forum (above).