Flickering LEDs - Aliasing, Cameras, and LEDs | DMX 1

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Aliasing is an interesting effect that can influence how digital systems perceive the world. Whether it be a microphone, camera, or an ADC, aliasing can be problematic. Let’s discuss how this effect occurs, and how we plan to fix it!
#LED #Camera #Flicker
Next topics: DMX Protocol & Design Hardening
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LED Tape - • WS2812B LED Sign - Bui...
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0:00 Introduction
1:10 Problem Statement
3:54 Camera Aliasing Explanation
7:40 Summary
8:50 Solution Architecture

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Опубликовано:

5 июл 2024

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Комментарии : 4

@okikrisna8619 3 месяца назад

Hi hello,, you know, what make the light with DMX modul when first start the light is no issue,, then after half day suddenly the light flikerling

@jogomez1988a 2 года назад

Perdón por contestar hasta ahorita pero acabo de despertar del ataque epiléptico que me dio (Lol). Este efecto es causado por el ahorro económico en capacitores filtrantes RC (led driver) para cancelar la señal PWM que controla la intensidad de cada led RVA (RGB). Solo se tendría un pequeño rizo en el voltaje de polarización de cada led de color. Nada es fácil en esta vida. Sencillamente se hace esto por que el ojo humano no ve el parpadeo a frecuencias cercanas a los 30hz. Pero los barridos de la cámara si que puede. Una solución sería aumentar la frecuencia de pwm y nos ahorramos unos capacitores...

@albertoportolani5553 2 года назад

Hello, very educational video! Instead I was wondering hoe to create the flickering effect to recreate "fire" with a board RGBW. I looked up DMX controller but did not find it! any help?

@EEforEveryone 2 года назад

Hi Alberto! That's an interesting question. If it's a simple strip (the entire strip is the same color), I'd expect that feature to exist on the controller, for example here's a discussion regarding the EOS family consoles: community.etcconnect.com/control_consoles/eos-family-consoles/f/eos-family/16012/flame-effect-on-nomad-eos It's likely best to drive this from the console so the look can be tuned and repeated! Otherwise, some RGBW tape drivers may have a special "fire mode" that is accessible via a special DMX channel. I hope this helps!