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s-marley / ESP32_FFT_VU

A spectrum analyzer VU meter for the ESP32 and a FastLED matrix
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88uS Conversion time:!!! #18

Closed whatever2010 closed 2 days ago

whatever2010 commented 5 months ago

Hi and thanks for sharing this project, I'm having a strange issue! when I ran the sample test code on my esp32-wroom-32u the Conversion time was 88 uS and Max sampling frequency was 11388 Hz, and it takes 90 seconds to print the output! what am i missing here? clone or low quality board?

TaisukeSeki commented 4 months ago

Same problem here.

whatever2010 commented 4 months ago

Try this method, reading analog pin like that for this purpose is not optimal.

TaisukeSeki commented 4 months ago

Thank you I will try!

whatever2010 commented 4 months ago

Thank the guy who shared this! 😂 If you are trying to make an spectrum analyzer like me just buy a SP107E. And reverse engineer that! I bought one but had no time for reversing!

TaisukeSeki commented 4 months ago

I would love to, but disappointingly it seems like the SP107E isn't an actual spectrum analyzer but just creates random bars of light.

whatever2010 commented 4 months ago

Yeah but the positive side is that it has a already made app and many controlling features that the end user likes. The esp32 version has some down sides like you have to keep the volume over 50% to work, even when here is an audio amplifier! I'm going to work on this project later on. No time for now! 😅

Cowh3adDK commented 2 months ago

Hi and thanks for sharing this project, I'm having a strange issue! when I ran the sample test code on my esp32-wroom-32u the Conversion time was 88 uS and Max sampling frequency was 11388 Hz, and it takes 90 seconds to print the output! what am i missing here? clone or low quality board?

after testing my own boards, all with clone esp modules have about the same conversion time as you, and my originals all have good conversion time.

whatever2010 commented 2 months ago

Hello mate, Thank you for letting us know.