SONOFF S55FR Waterproof Wi-Fi Socket under Tasmota

[pancio]

Hi,

Today I'll show you how to prepare SONOFF S55FR Waterproof Wi-Fi Socket for Home Assistant under Tasmota environment. You may buy it on Banggood or Aliexpress, his price is abound 12$, so it's chip waterproof device in my opinion.

S55 unboxing

socket0.jpeg (490.31 KiB) Viewed 114391 times

Preparing to flash

According to PCB variant which I received, flashing on-air (with tuya-convert software) is not possible any more. But don't worry. PCB was designed with all required PINs which are necessary to flash device with chip USB<->RS232 (TTL) converter:

Caution! ESP 8266/8285 don't like voltage higher than 3.6V. Your USB<>RS232 converter should work for 3.3V!

S55 PINs header

S55-pinheader.png (1.1 MiB) Viewed 114391 times

In case, there is no necessary to disassemble device... you may solder dupoints directly to empty pinout header.. just like that:

Connected dupoints

connected2.png (1001.82 KiB) Viewed 114391 times

The finally, connect dupoints to USB2RS232 converter:

Ready to flash

connected2usb2rs232.jpeg (1.15 MiB) Viewed 114391 times

Wait wait... what about GPIO00 which is necessary to enable programming mode for ESP? Don't worry, you don't need to solder any more cable. Required signal is connected to switch placed on S55 case


Flashing
The flashing process is very easy:
1. Download Tasmota image from http://ota.tasmota.com/tasmota/release/tasmota.bin (current version is 9.3.1)
2. Connect USB2RS232 to PC with pressed switch on S55 case (release it after a few seconds)
3. Flash ESP8285 by using command:

Code: Select all

python3 ./esptool.py -p /dev/ttyUSB0 write_flash -fm dout 0x0 tasmota-9.3.1.bin

Flashing progress

flashing.jpeg (2.86 MiB) Viewed 114391 times

4. When finished, unplug USB2RS232 converter, plug it again and check that tasmota_xxxxx SSID is visible in your WiFi environment.
5. Connect to tasmota_xxxxx SSID, open web browser and go to address: http://192.168.4.1
6. In configuration/Other section put to Template area:

Code: Select all

{"NAME":"Sonoff S55","GPIO":[17,255,0,255,255,0,0,0,21,56,0,0,0],"FLAG":0,"BASE":1}

Don't forgot set Activate tick!
Save, and wait for restart...
7. Optionally, prepare device for Home Assistant:
Click console and type command:

#Enable HA discovery

Code: Select all

SetOption19 1

#Display IP

Code: Select all

SetOption53 1

#Save last state

Code: Select all

PowerOnState 3

That's all!
Have a nice socket