SmartSwitch @4€!

ESPHome
1

Hi all!
I would like to share some good hints to quickly assemble a Smart Switch ESPHome compatible with a total cost of around 4€.

  1. Go on Aliexpress and buy a Smart Switch Tuya-compliant, the cheapest version at around 2€. Here is the picture:

IMG_5744
IMG_57441170×1149 184 KB

Then you can desolder the original, totally unknown wifi board:

image
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Then , still on the same site, buy an ESP-02 which is pin to pin compatible. Program it with a standard Usb-to-serial programmer with ESP Home and then solder it in the same place:

image
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Then, once the chip is connected, configure the pins as follows:
GPIO12: Relay
GPIO14: Manual switch

That’s all. Hope you will find it useful!

Cheers!

1 Like
2

Have you tried to connect a programmer to the original? Maybe it is actually an ESP chip. Might get some info via something like esptool.py.

3

It’s an LN882H, not esp but now supported by openbeken

https://www.elektroda.com/rtvforum/topic4028087.html

2 Likes
4

Tasmota template
{“NAME”:“Mini Smart Switch”,“GPIO”:[1,1,1,1,320,1,1,1,224,32,160,1,1,1],“FLAG”:0,“BASE”:18}