StefanPetrick
Well-known member
Teensy 3.6 + Audio Adaptor + APA102?
Hello everyone,
just some short questions before I get myself a 3.6 + Audio Adaptor. Please correct me in case I misunderstood something.
A) The Audio Library and FastLED are working together fine.
B) Are with this combination still hardware SPI pins available to drive the the leds? (I don´t need SD communication.) Supported by FastLED?
C) Is 256 point FFT the fastest possible way to get spectral data? I would be fine with way less bands, too. Priorities are speed and data quality.
D) I´ve no clue yet how FFT works. Is there an answer to the question: How long does a sine wave with 100 Hz need to be present until the FFT detects a change? One wavelength (10 ms)?
Thanks, Stefan
Hello everyone,
just some short questions before I get myself a 3.6 + Audio Adaptor. Please correct me in case I misunderstood something.
A) The Audio Library and FastLED are working together fine.
B) Are with this combination still hardware SPI pins available to drive the the leds? (I don´t need SD communication.) Supported by FastLED?
C) Is 256 point FFT the fastest possible way to get spectral data? I would be fine with way less bands, too. Priorities are speed and data quality.
D) I´ve no clue yet how FFT works. Is there an answer to the question: How long does a sine wave with 100 Hz need to be present until the FFT detects a change? One wavelength (10 ms)?
Thanks, Stefan
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