I have a string of Govee H7041 String Lights and need some help on WLED settings for the TM1815B Chip that is on the board. Is it supported yet by WLED and if so, what settings do I need for them to work. I have tried everything. Data specs are here: [image] . Buy best quality TM1815…

please also check if it works in this configuration: add a ws281x bus as the first output (choose any pin, does not matter) add your TM1815 as the second output, same pin as you already have check if there is any flickering (uses a different driver with slightly different timings) edit: what iss…

So far there has been zero flickering and I have tried several preset settings to challenge that. That goes for both settings, being set up as string 1 and 2. The brightness did not change regardless the way I hooked it up. It’s not like it is super dim, it just looks to the eye like maybe 2 - 7%…

thanks, its not hard to get it running if you know a little something about the protocol. The brightness not being at max comes from a very old piece of hard-coded limit values, it limits the current to 22.5mA of the full 38mA the chip can actually do. Reason is that some of the govee’s use that as…

Sounds great. Are you going to roll this into the next WLED version ? I am going to save the settings and not update. I like what you did a lot! Being able to get rid of the Govee app all together is nice because it is fairly unreliable, requires other integrations into home assistant, and don’t…

I already have the code as a proof of concept, did it as a “test run” for something else I am working on. No need to update neo pixel bus, we can define new timings also in WLED and pass them on to NPB when instantiating a bus, which is what I want to do for some other timing options.

Add support for TM1815 main ← DedeHai:customBusTypes opened 04:59PM - 03 Jan 26 UTC (UTC) [image] DedeHai …

Appreciate the help and support for sure!

Still enjoying WLED driving my Govee lights!!! Every night!!!

I noticed that the option for 1815 has not made it’s final way to WLED version 0.15.4 yet. Any idea of when the official rollout is going to be safe for the stable version? Or do I need to put an official updated request in for that?

It was never going to go into 15.x, only 16.0 and the way to do it is a bit of an ongoing debate. I shifted focus and wrote a new bus library from scratch which will make adding new LED types a breeze. It is unknown when this new library will be ready but it will solve many issues we have with neo …

WLED Setting for TM1815B Govee lights

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dedehai January 3, 2026, 5:00pm 27

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WLED Setting for TM1815B Govee lights

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