https://learn.adafruit.com/adafruit-circuit-playground-express/circuitpython-neopixel
How many neo pixels can I control?
Limited by processing power/speed:
You can drive 300 pixels with brightness control and 1000 pixels without (set
brightness=1.0 in object creation). That's because to adjust the brighness we have to dynamically re-create the datastream each write.Copied from: CircuitPython NeoPixel | Adafruit Circuit Playground Express | Adafruit Learning System - https://learn.adafruit.com/adafruit-circuit-playground-express/circuitpython-neopixel
Limited by Power
For powering the pixels from the board, the 3.3V regulator output can handle about 500mA peak which is about 50 pixels with 'average' use. If you want really bright lights and a lot of pixels, we recommend powering direct from the power source. On the Circuit Playground Express this is the Vout pad - that pad has direct power from USB or BAT, depending on which is higher voltage.
What else can I do with the board at the same time?
Hmmmmm
Neopixels
https://learn.adafruit.com/adafruit-neopixel-uberguide/basic-connections
https://learn.adafruit.com/glowing-slime-lunchbox/makecode
https://learn.adafruit.com/glowing-slime-lunchbox/makecode
