3.3V supply on OctoWS2811 (Teensy 4.0)

C

chuckd111

Member
Is there an easier way to get 3.3v supply on OctoWS2811? I am not convinced this will work. Will post the results here.


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Not sure what you want to accomplish...why would you want 3V3 on the adapter?
It looks like you mounted a connector on the Teensy 4.0's 3V3 and GND pins, probably to power the Teensy 4.0 externally?

By the way, you inserted the Teensy 4.0 the wrong way into the adapter - the USB connector should be facing away from the large black connector on the adapter.
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Paul

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Yea, thanks for the heads up. I am trying to drive a microphone and 4 led panels from the same teensy 4.0. I think I figured it out but still need to wire up the mic in code. I need 3.3v dedicated for the mic. as I don't think it will accept 5v.
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PaulS said:
If you are actually using this microphone module, then it can handle 2.7V-5.5V as supply voltage.

Paul
Click to expand...
Yes, thank you Paul, I looked at the spec on Amazon where I purchased it an it said 3.3v and I assumed that was it. I am still trying to get the spectrum analyzer composited but I'm impressed the port from FastLED to Octo library is a huge improvement in the framerate. It looks much better.

 
PaulS said:
If you are actually using this microphone module, then it can handle 2.7V-5.5V as supply voltage.

Paul
Click to expand...
So for some reason I was thinking I could connect the mic using PWM and select any pin. Now after reading my last working configuration was Pin 16 (A2) on the Teensy 3.6. Now on Teensy 4.0 it seems that pins 15 and 16 need jumpered? In the Octo schematic they are not available?

Hopefully I can use Pin 17 direclty from the board header as seen in this example..

github.com

OctoWS2811/examples/SpectrumAnalyzer/SpectrumAnalyzer.ino at master · PaulStoffregen/OctoWS2811

Control thousands of WS2811/2812 LEDs at video refresh speeds - PaulStoffregen/OctoWS2811
github.com github.com


schematic_octo28.gif
 
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