I'm using FastLED 3.1 and have a project that works OK using a Teensy

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(mark vr) #1

I’m using FastLED 3.1 and have a project that works OK using a Teensy 3.0 at 96Mhz. If I use a Teensy 3.1 at 96Mhz the LEDs just randomly flicker. If I use a Teensy 3.1 at 72Mhz, it works OK.

Any ideas? Some of my animations are CPU intensive so I’d like the Teensy to be as fast as possible!

(JP Roy) #2

I’m guessing you’re using some device like the APA102… Try changing the SPI clock rate !? I remember others that solved similar problems that way !

(Daniel Garcia) #3

What kinds of LEDs are you using? If ws2812’s are you using leave shifters?

(mark vr) #4

They are ws2811 with a level 3.3-5v level shifter (74HCT245). They are wired up as described at https://www.pjrc.com/teensy/td_libs_OctoWS2811.html but I ended up using FastLED (for all it’s extra features) rather than OctoWS2811.

(Daniel Garcia) #5

And in your code are you referring to them as WS2812 or WS2811 - there are different timings for the two (and when did you last update FastLED3.1?)

(Aaron Liddiment) #6

I can confirm that there is no problem with FastLED 3.1, WS2812’s, Octo Board and the Teensy being overclocked. I have been running code at 96, 120 & 144. It does fall over at 168MHz though.
FastLED 3.1 8th July 2015
Arduino V1.6.3
Teensyduino V1.22