Chipset LN882H support

[Marcin685]

Is there a bin/uf2 kickstarter available for the LN882H chip?

[lamauny]

Hi @Marcin685, I've recently added support of LN882H to LibreTiny, so esphome support will come soon.
For now I've added support for WL2S and LN-02 modules, but if it's another reference I'll need to have more informations on it (like pinout) and then I could add support for it.
Do you know your module reference ? Can you take a picture of the module's backside ?

[divadiow]

[lamauny]

Do you know its name or reference ? Something to suggest ?

[divadiow]

nothing at all really. I did make contact with a contact address I had for Ammtoo/ Shenzhen Jintuopu Investment because that was the company printed on a sticker on a bulb I got with this module in. No response. Contact was kingtop1212@163.com

[Cossid]

Do you know its name or reference ? Something to suggest ?

Assuming it's a Tuya module or a knock-off of one, there is no page for it, but following their pattern, WL is their Lightning Semi prefix, and the form factor matches the LC5 like the CBLC5, so I'd probably deem this one the WLLC5

[divadiow]

I have emails to some hnxtech.com contacts last year asking about the WL2S. Not sure how I made the link to them though. Probably a sticker on a box.

[Cossid]

@lamauny Also, if there isn't already, there should probably be a ln882h-generic board or something that has all GPIO available, like was done for beken and realtek.

[divadiow]

I have emails to some hnxtech.com contacts last year asking about the WL2S. Not sure how I made the link to them though. Probably a sticker on a box.

[lamauny]

@lamauny Also, if there isn't already, there should probably be a ln882h-generic board or something that has all GPIO available, like was done for beken and realtek.

Your're right, I'll do that.

[lamauny]

For those who want to test with esphome, you can use my forks:
https://github.com/lamauny/esphome/tree/dev-ln882x
https://github.com/lamauny/libretiny/tree/feature/ln882x

Configure your device yaml with

ln882x:
  board: generic-ln882hki
  framework:
    version: dev

and generate the project for your device with the command :
python3 -m esphome compile --only-generate config/my_device.yaml

[Marcin685]

Can you compile bin/uf2 so I can upload via OTA to my bulb? I don't see a version for LN882H in the list below.

[lamauny]

@Marcin685, here are the files:
kickstart-ln882hki-2025-05-21..zip
WiFi AP mode seems to be broken because device reboots after a few seconds because of watchdog.
However If you succeed to connect and configure your wifi network, you'll get it working ;-)

[lamauny]

Watchdog reset fixed :

kickstart-ln882hki-2025-05-25.uf2.zip

[Marcin685]

@lamauny what tool are you using to upload this file via RX and TX interface?

I uploaded it with this tool. It got to 100% and finished. After restarting the board I do not see the device in the wifi network.