Anything special in Sonoff S20 config?

Configuration
1

I have several Sonoff Basic configured at home, but I have just installed my first Sonoff S20.

I have no issues with my Basics, but I don’t know what’s wrong with the S20 that I can’t control it through Home Assistant. I don’t get status info and if I click on/off on the entity_ID nothing happens. But I can control it publishing mqtt packages through HA.

Here is the S20 switch config.

  - platform: mqtt
    name: "Server"
    state_topic: "stat/sonoff08/POWER1"
    command_topic: "cmnd/sonoff08/POWER1"
    payload_on: "ON"
    payload_off: "OFF"
    optimistic: false
    qos: 1
    retain: true

And this is the Tasmota configuration

25
25467×1105 62.1 KB

Clicking on it doesn’t change it’s state

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16801×284 29.7 KB

But If I issue a mqtt_publish message like this with ON/OFF the switch responds perfectly.

06

Does the Sonoff S20 have something different than the Basic ones?

2

The payload in your manually published message is different (‘On’ vs ‘ON’ in your config).

It is case sensitive.

3

In my config is ON, as the rest of the Sonoffs I have.

4

Well that’s what you published and you said it worked.

I agree though the default is usually ‘ON’.

Do you have setoption26 enabled?

If not you have to use POWER, not POWER1. https://github.com/arendst/Sonoff-Tasmota/wiki/Home-Assistant-‐-Manual-Config#configure-switches

5

No, I don’t have setoption26 enabled. I’ve tried both with the availability_topic and without it.

The rest of my setup uses the availability_topic. I just copied the details from one of the other switches and changed it into “sonoff08”, and when it didn’t work I started trying different things to no avail

6

Sorry I just edited my post, you have to use POWER not POWER1 if setoptio26 = 0

7

This is my working configuration for Tasmota 6.3.1 / Core 2_3_0

Tasmota settings applied by  cmnd/sonoff-s20-portabel/Backlog:

PowerOnState 0    off | Keep relay(s) off after power on -> overriden by MQTT retain
SaveData 1        Save parameter changes every second (config & stats)
SetOption 0       Do not save power changes and do not set relay after restart
TelePeroid 60     Publish telemetrie every 60 seconds
SwitchRetain 0    There is no custom switch added to the device: https://github.com/arendst/Sonoff-Tasmota/wiki/Buttons-and-Switches
SensorRetain 0    Don't retain telemetrie messages
PowerRetain 1     Retain flag for cmnd/sonoff/power
ButtonTopic 1     Set the ButtonTopic to cmnd/sonoff/power
ButtonRetain 1    Enable MQTT retain flag on button press for cmnd/sonoff/power (set by ButtonTopic 1)
SetOption26 0     Use cmnd/sonoff/POWER instead of cmnd/sonoff/POWER1
WifiConfig 4      Disable wifi config but retry other AP without restart. If no alternative SSID is available just retry (same as WifiConfig 5)


switch:
  - platform: mqtt
    name: Sonoff S20 Portabel
    state_topic: "stat/sonoff-s20-portabel/POWER"
    command_topic: "cmnd/sonoff-s20-portabel/POWER"
    availability_topic: "tele/sonoff-s20-portabel/LWT"
    qos: 1
    payload_on: "ON"
    payload_off: "OFF"
    payload_available: "Online"
    payload_not_available: "Offline"
    retain: true
    optimistic: false
8

Ok, so after SetOption26 1 and SetOption 59 1 it’s working as expected. I don’t know which one of them made it to work, or if both were needed. Now is working and reporting correctly.

Thanks everyone!