search

jasoncoon / esp32-fastled-webserver

Work in progress ESP32 port of https://github.com/jasoncoon/esp8266-fastled-webserver
GNU General Public License v3.0
197 stars 66 forks source link

Flicker #8

Closed jasoncoon closed 5 years ago

jasoncoon commented 5 years ago

LEDs flicker slightly.

jasoncoon commented 5 years ago

Seems to be improved, if not completely resolved now: https://github.com/jasoncoon/esp32-fastled-webserver/commit/c6718bd4b5d7b815064de8785f65f12faca1ec76

pikipupiba commented 5 years ago

I'm still getting a flicker that starts after the first 20 leds and gets more common at the far end of the strip. I have installed a logic level converter and I tried hooking the far end of the strip to the power supply as well. Neither thing has really affected the flickering at all.

jasoncoon commented 5 years ago

Which level shifter are you using? Are you using the latest changes mentioned above?

pikipupiba commented 5 years ago

https://www.amazon.com/gp/product/B073D4DJDC/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&psc=1

I am pretty sure I am using the latest version. I just downloaded it 2 weeks ago.

And the animation is running fine underneath the flickering if that helps.

jasoncoon commented 5 years ago

There are very few level shifters that are known and tested to be able to handle the speed required for WS281X or SPI based (APA102, etc) RGB LEDs. The one most used is the 74HCT245.

More details: https://happyinmotion.com/?p=1247

pikipupiba commented 5 years ago

Ordering new ones now. Thank you for your help!

pikipupiba commented 5 years ago

Soooooo all that I needed to do was change the FASTLED_SHOW_CORE to 1 instead of 0 and there is no longer any flicker at all. I have no idea why this would be the case but props to u/Jem_Spencer for the fix! Maybe change this in your code?

https://www.reddit.com/r/FastLED/comments/aup7ia/getting_a_flicker_when_using_esp32_and_level/

jordanadania commented 4 years ago

pikipupiba's solution worked for me