The QT Py ESP32 Pico tacks back-to-back with the power breakout BFF using headers. The NeoPixel pebble pixels plug into the Stemma port on the QT Py: Black to G, and blue to DI. The +5v wire is broken out and soldered to +5v on the QT Py. The red and yellow wires on the Stemma QT cable are not used and may be cut short when the project is working.

The blue stemma wire connects to pin 22 on the QT Py, so that's the number we'll enter under LED Settings in WLED.

This project uses 50 pixels in the crown, which is why we can't power them through the red wire on the stemma port -- they just pull a bit too much power. If you have fewer than around 30 pixels in your project, check out this Star Crown tutorial for a slightly simpler wiring strategy.

NeoPixel strips have an IN and OUT end. Be sure you're connecting to the IN end or the pixels won't light up. This is sometimes inconsistent with different lots of pixels so it's a good idea to test before committing with a solder joint. On the build page I'll give some tips about how to figure out which end is which.

The USB port on the QT Py is now available to use as a charging port. This BFF breakout adds USB battery charging to your project. Neat!