For those that are seeing unexpected random sparklies on your strips,

For those that are seeing unexpected random sparklies on your strips, check voltage. I was seeing sparklies appear after my Teensy had been driving the strips for about a minute. It turned out the cause was that I had accidentally changed the voltage from my power supply to about 8V instead of 5V going into the Teensy3.1.

Consider yourself and your Teensy and your strips lucky if all you got from that little ‘accidental change’ is temporary sparklies !

From PJRC’s site…

Caution: Reverse polarity power or greater than 6 volts can damage Teensy