RGB color accuracy compared to stock Tuya and ESPHome firmware

[ryan-ronnander]

Just want to say I love this project and I'm happy to help where I can, even if that's just opening a few bug reports to hopefully improve OpenBeken in comparison to ESPHome and Tasmota.

I'm using some SYLANIA Smart+ RGBW bulbs which are controlled by PWM. When comparing different firmware, OpenBeken seems to perform the worst compared to stock Tuya firmware and ESPHome.

I created a video to hopefully try and show the differences between the firmware running on the same bulbs:

Somewhat longer video, but the reds being fairly off between the 3:00 - 4:00 minute mark are noticeable in the video. Of course, I'd throw a Tasmota comparison in as well, but the lack of Tasmota support is the reason I'm here 😆

[openshwprojects]

Thank you for pointing that out. We have some kind of RGB calibration tool created by contributor: https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/led_gamma_control.md
Do you think that it may help? Maybe we need to apply some kind of multiplier to colors by default to make red more red?

[stromrickard]

Did you find any solution to improve this? I've got a Nedis RGBW LED-strip that i just flashed and i'm seeing the same thing after flashing it.

[ryan-ronnander]

Did you find any solution to improve this? I've got a Nedis RGBW LED-strip that i just flashed and i'm seeing the same thing after flashing it.

I've simply flashed these bulbs to ESPHome.

[jcam]

This may now be resolved by #1825 if you want to give it another try.
I tried esphome and ended up switching back to openbk because it has faster startup and makes the bulbs work more like bulbs from a physical switch. Now the colors seem to be tracking properly as well :)