Getting bad flicker with Triple Output High Power RGB LED

Components & Accessories LEDs
1

https://www.sparkfun.com/products/15200

I have tried two of these with similar results. They are driven with the Picobuck controlled by an Uno for the PWM signals and there seems to be combinations of levels of that create a bad flickering.

Lower levels seem to be okay and strangely enough, high levels too, but combinations in the middle seems to cause the flickering. It also seems to flicker more as it stays on which indicates some . For example, if everything is cold and just turns on, I don’t see a flicker, then after about 5 or 10 seconds, it starts to blink pretty bad.

[2 second video showing the blinking

For example, this blinks badly

void setup()
{
...
 analogWrite(C_RED, 200);
 analogWrite(C_GREEN, 85);
 analogWrite(C_BLUE, 0);
}

and this does not blink

void setup()
{
...
 analogWrite(C_RED, 255);
 analogWrite(C_GREEN, 255);
 analogWrite(C_BLUE, 0);
}

I’m a bit stumped, should I try new LEDs or a different driver?

Setup:

https://cdn.sparkfun.com/assets/learn_t … k_1led.png](https://kyle-keating.s3.us-west-1.amazonaws.com/VID_20220103_124845.mp4)

2

Changed the pins to all 490Hz PWM outputs (rather than mixed 490 w/ 980)

https://www.arduino.cc/reference/en/lan … alogwrite/

But I also moved my clips around and that seems to have solved the issue. I think this may have been a crappy connection to the LED because I have not soldered anything down yet, but I was thrown off because some values worked while others did not. Still a bit of a mystery, but I think soldering will be the best path forward.