We tried two different W2811 addressable LEDs, one SMD, the other one through hole. They are connected to a Teensy 3.2.
Both work when power is drawn from the Teensy’s 3.3V power supply pin.
Both do not work when power is drawn from an external 5V power supply. Of course, the ground of the power supply is connected to the Teensy’s ground.
One of the through hole addressable LEDs that we used for testing even exploded, although polarization was correct, and voltage was below 5.5V, which is fine according to specs.
If we swap the Teensy for an Arduino Mega, then everything works fine with the SMD LED. With the through hole LED, white is shown as black, which again is unexpected.
Anyhow: Could it be that the WS2811 addressable LEDs need to have the same voltage for programming and for power?
Both work when power is drawn from the Teensy’s 3.3V power supply pin.
Both do not work when power is drawn from an external 5V power supply. Of course, the ground of the power supply is connected to the Teensy’s ground.
One of the through hole addressable LEDs that we used for testing even exploded, although polarization was correct, and voltage was below 5.5V, which is fine according to specs.
If we swap the Teensy for an Arduino Mega, then everything works fine with the SMD LED. With the through hole LED, white is shown as black, which again is unexpected.
Anyhow: Could it be that the WS2811 addressable LEDs need to have the same voltage for programming and for power?