Sonoff DIY from Firmware 3.5.0 Ewelink Protocol V2

Since April 2, 2020, Sonoff has just launched Ewelink Firmware 3.5.0 and on this occasion, the DIY protocol goes from V1.4 to V2.0

Equipment concerned:

http://developers.sonoff.tech/sonoff-diy-mode-api-protocol.html#Supported-Device

AR1057 Sonoff R3 Basico images sonoff rfr3 may 2019 d1

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The update in Ewelink of your Sonoff DIY equipment will cause a need to reprogram the DIY mode, this tutorial is there for you.

At the time of writing, the Sonoff documentation is not complete (for me) , cf. references while in case of this tutorial, I did a lot of testing to find this procedure.

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Sensors Humidity Temperature i2c DO NOT go wrong

There are several close references and even some sellers mix the brushes.

This little tutorial is a feedback from my orders and tests (which made me waste a lot of time).

I have always needed Sensors Humidity/Temperature (and incidentally atmospheric pressure).

If you buy a sensor for less than €2, it will not give you moisture, the correct price is between €6 and €8.

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Dominate your Jeedom-controlled bathroom heater (with a Sonoff Basic R2)

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Note: one V2 of this tutorial was made with a Sonoff Basic R3

Objectives:

At a lower cost (within €10) + the price of heating (€16), I wanted to domotiser the heating of the bathroom to:

  • Be able to trigger (or stop) heating via Jeedom (and therefore controlled by Google Home, Alexa, Touchscreen, Phone …)
  • Be able to trigger (or stop) heating from the button on the Sonoff
  • Automatically stop heating to a certain temperature and warn Jeedom to trigger information
  • Automatically stop heating after a certain period of time and warn Jeedom to trigger information
  • Try as much as possible to make the heating stand-alone (whether it works even without wifi or jeedom)

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