Two Blinkt!s.
Not running together, but handy for testing.
One runs OK on Pi, and on four wires away from Pi.
The other is only OK when it’s on the Pi, lots of lovely scrolling rainbows.
When it’s on four wires, it just shows scrolling red/green at low brightness
Any ideas why this Blinkt! is allergic to four wire connection?!
Ta!