did you ever get this working? I have the same with neopixels, using either the adafruit library or the fastled library. As soon as i include the mysensors library the leds no longer change.

I'm using this analog sensor: https://www.dfrobot.com/product-1394.html

and I saw there's a S_WATER_QUALITY
but I'm not sure what V_ to use.

The sensor basically measures how transparent the liquid is, to detect if gunk is growing in your water tank or pipe.

How are you going on the Trinkets? Does the v1.5 still work on these?