[sdiy] Coloured LEDs

[Amos]

Not directly synth-related but I have some experience with Adafruit
NeoPixels... there is an open-source library called FastLED that talks to
neopixel controller chips, and it's excellent.  I didn't analyze its CPU
performance since my project was almost purely an LED controller and didn't
have other work to do... but the ease of use and impressiveness of results
was quite high. :)

On Sun, Feb 19, 2017 at 3:12 PM, charlie wallace <charlie at finitemonkeys.com>
wrote:

> Cypress PSOCs are a good solution since you put the whole protocol in
> their blocks and leave the rest of the CPU to do other stuff, the
> APA102 RGB leds are a lot less forgiving timing wise than the WS28112s
> and are SPI, i ran a  thousand or so of the WS2812 for xmas lights
> from PSOC4s and ESP8266s, 300 per PSCO4 i didn't try more since RAM
> was tight.
>
>
> On Sun, Feb 19, 2017 at 11:47 AM, Ingo Debus <igg.debus at gmail.com> wrote:
> > [Shenzen LEDs]
> >> Am 18.02.2017 um 18:11 schrieb paula at synth.net:
> >>
> >> They are rather sexy, however if you have an arduino/teensy I think
> libraries exist to drive these for you :)
> >
> > They’re quite processor-power hungry. As I understand it, the timing
> requirements are very tight. If the control signals are generated by
> bit-banging, the processor can’t do much else while LEDs are addressed.
> Some processors have PWM outputs that can be mis-used to generate the
> signals, but this looks like an ugly hack to me.
> >
> > Ingo
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