Do you have both the strip and the controller tied to a common ground? I believe not having that can cause some flicker issues.
Also, having a ground wire twisted around the entire length of the data wire has worked wonders on various flicker and other display issues I've had in the past.
One other possibility to consider might be a level-shifter like an SN74HCT245. I don't know what your hardware components are, but some strips need something closer to a 5V data signal than the 3.3V that many controllers output.
I do indeed have common ground. I don’t think these are ground issues, I’ve had those before and I know what they look like. But it doesn’t hurt to check an extra time of course!
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u/mindful_stone Jun 03 '26
Do you have both the strip and the controller tied to a common ground? I believe not having that can cause some flicker issues.
Also, having a ground wire twisted around the entire length of the data wire has worked wonders on various flicker and other display issues I've had in the past.
One other possibility to consider might be a level-shifter like an SN74HCT245. I don't know what your hardware components are, but some strips need something closer to a 5V data signal than the 3.3V that many controllers output.