I’ve been experimenting with running a “dumb” RGBW strip from a ESP32. Unfortunately, I seem to be running into a pretty constant flicker. I’ve tried running this setup with both a very short strip (16ish leds) and a long strip (200 or so). I use an ATX power supply, so there is plenty of room on the 12V rail. I use mosfets to drive the strip.
Just to convince myself that I wasn’t overwhelming the ESP32 to drive 4 pwm channels, I tried just running a “PWM White” strip (only one channel) and I still observed the subtle flicker.
I’ve also tried different ATX power supplies.
Does anyone have suggestions on what I could do to eliminate this? Unfortunately I don’t have an oscope, otherwise I’d check to see if the PWM signal is changing or if it’s some weird voltage drop.