Wiring Verification Before I Fry Anything

[j3tang]

Hi everyone, I'm new to setting up HyperHDR and slowly piecing things together.
My setup consists of HyperHDR running on a RPi4 connected via USB to a Pimoroni RP2040.

The pico is flashed with the appropriate firmware and is recognized by HyperHDR when selecting the "output path":

My next step is to get the pico wired up with the LEDs (SK6812 RGBW) but before I do it, I just wanted to make sure I'm wiring things correctly. The power for the LEDs will be coming from a power supply providing DC 5V 20A.

I plan to connect the LEDs +5V and GND to the power supply's V+ and V- respectively. The Data from the LED is going to go to the Pico's DA terminal. Am I also supposed to take the power supply's V+ and V- to the Pico's 5V and "-" terminals too?

The LED strip will be approx. 4m and will just be the one segment going around the TV. Based on the single segment schematic below, it looks like the +5V and GND of the LED strip is actually a closed loop. I just wanted to verify that this is indeed correct.

[awawa-dev]

Hi
Under no circumstances should +5v from the LED power supply be connected to the Pimoroni rp2040. Its internal level shifter is already powered from the USB +5v line. Only ground (to obtain common ground) and data lines from the LED strip needs to be connected to the Pimoroni.

[j3tang]

ok, thanks for clarifying the +5V.

Just to be clear ... the GND on the LED will connect to the V- coming off of the power supply? That same V- is what connects to the Pimoroni, right? Would it go to the "-" terminal? or do I solder a pin into one of the two spots marked "GND"? Or no difference?

Also, could you clarify the question about the "closed loop" part of the LED in the schematic above?

[awawa-dev]

yes, if v- and v+ looks like this then v- is GND for the LED

indeed, there are closed loops when you inject voltage at the beginning and at the end.

[j3tang]

Thanks, and yes the power supply is like what you've shown.
Once these parts all arrive will get it wired up and report back :)