Hi, I'm struggling to understand an issue I'm having.
My original setup was an RPI4, which both powered and controlled a strip of WS2812's (30 leds/m).
My RPI4 power cable is 5V 3A output.
Even though in Hyperion, my estimated power draw for the LED's was around 8A (my power supply is only 3A) everything was working perfectly at maximum brightness.
Because I was unhappy with the white colour from the WS2812's, I ordered some SK6812 RGBW and I also decided to get the 60 leds/m. I figured I'd need a dedicated power supply so I ordered a 5V 10A one as well.
So today I've connected to new strip up with the new power supply.....however I've got an issue where the leds are flashing. Weirdly this only seems to happen when the leds are set to colour red, and over 80% brightness.
I'm pretty sure the issue is the power supply not being enough, as when I reduce the number of leds in the layout to a point where it says the power draw will be just under 10A (which is the same as my power supply) everything starts working ok. Also when I turn the brightness down to 50% all led's work without flashing.
So my question is, if it is indeed the case that my power supply is not enough for these leds, how on earth was my RPI4 managing to power supposedly 8A worth of leds from a 3A power supply???
Is my issue actually the power supply?
My current wiring with the new leds is:
LED +5V ---> POWER SUPPLY DC JACK +TERMINAL
LED GROUND ----> POWER SUPPLY DC JACK -TERMINAL
LED DATA ----> RPI4 GPIO18 PIN
RPI4 GROUND ----> POWER DC JACK -TERMINAL
Is this right? Should I be connecting the data wire to the RPI4 SPI out instead? Because currently in Hyperion the controller is set to WS281X under led hardware....the RPI SPI option for SK6812 does not work.r
Sorry for the long post.....