Question : Pin connection between RPI4 and RPI2040/ESP32 S mini

[Yogy42]

I want to use HyperHDR with HyperSPI
I have now a running HyperHDR with a ws2812 (210 Leds) with the ledstrip data direct from the rpi and a level shifter , this works perfect

I have an esp32 S2 mini and a RPI2040 and I found on github this connection table

I want to try out both, i do not know which one is the best

I cannot make it clear for myself which hardware pen numbers I must use on the raspberry
I have seen several foto's and diagrams, but I cannot wrap my head for the connection from the leads.
Not all the pictures have the same wire layout.

I'm using a rpi4 / sk6812 White Ledstrip 210 leds in use

Can I run the SK6812 White with the same kind of connection?

[awawa-dev]

Hi
The best is the setup with a built-in level shifter which naturally favors some rp2040 board with builtin level shifter. If you are able to attache external level shifter then esp32 s2 mini is also fine, but I would place that board even below standard esp32 boards in most cases. But you have to consider what you'll gain if you somehow managed to connect LEDs to GPIO, which is obviously not recommended but works ("this works perfect")? When changing a setup, there's always a low probability, but it's always there, that something could go wrong. I would leave it for another occasion, e.g. when you feel like installing an LED with more possibilities than WS2812. Anyway I think the picture shows quite nicecly pinout if you take a minute to follow cables colors. Also you have some diagrams on this page: https://astarom.github.io/

[Yogy42]

Thanks for replying
Indeed never change a winning horse, but yes I want to change from WS2812 RGB to SK6812 RGBW (natural white).

I assume that I cannot replace the ws2812 rgb in my existing config with the skI6812 rgbw and re-configure HyperHDR
That would be the most easy way

But anyway, I have all the parts in stock , inclusive the RPI4 and all he other parts , so I can build a second system.

Thanks for the link to this picture this is an good one :

https://raw.githubusercontent.com/AstaRom/AstaRom.github.io/main/other/ambilight.png

[awawa-dev]

My preferred solution is still to use the built-in RP2040 level shifter, if Adafruit or Pimoroni are available at a good price in your country: they don't cost a fortune and they're not paying me for advertising. And instead of (in addition to) capacitors for voltage stabilization, it's definitely worth having a brand-name, stable power supply. But that's your decision – there are many paths here. My setup still runs on an ESP32 with an external level shifter, but a different one than the one used in the diagram (and without resistors and capacitors) and is described on my blog, and I plan to switch to a Pico only with the next upgrade. I don't want to impose the only correct plan on you: it simply seems simplest to me, and perhaps because with such components, I'll spend the least time building new setup in the future.