Somfy RTS remote control integration with Supla app - how to copy the signal?

anpreus wrote:

Hello. i am looking for a solution on how to do the best in supli copy the somfy rts remote control and then control myself from the app ?

Hello,
The task you have presented is to control blinds or other devices using the Somfy RTS system via the app, which is an interesting project. Somfy RTS is a radio protocol that allows you to wirelessly control various home devices such as blinds, awnings, gates, etc. Understanding how to copy the remote control signal and integrate the control into an app requires considering several steps and following the legal aspects of copying radio signals.

## Step 1: Analysing the Somfy RTS protocol

Somfy RTS communicates using a coded radio signal, so the first step is to understand the protocol. Various analyses and documentation on how the Somfy RTS protocol works can be found online. Knowing the details of the protocol is key to emulating the remote control correctly.

## Step 2: Using the right hardware

To record and emulate radio signals, you can use SDR (Software Defined Radio) or dedicated transceiver modules that operate on the frequency used by the Somfy system (usually 433.42 MHz). These devices, combined with appropriate software, will allow you to analyse and clone the remote control signal.

## Step 3: Programming the microcontroller

After understanding and recording the signal, the next step is to program a microcontroller (for example, ESP8266 or ESP32) to emulate the Somfy RTS remote control. The microcontroller should be equipped with a transceiver module operating at the appropriate frequency. There are libraries and code examples available on the Internet that can help with this task.

## Step 4: Integration with the application

To control the device with the application, the microcontroller should be connected to the Internet (via Wi-Fi). You can use existing platforms to develop IoT applications (for example, Blynk, Home Assistant, openHAB) or create your own application using the MQTT or REST API to communicate with the microcontroller.

## Legal issues

Before you start, make sure that copying remote control signals and controlling Somfy devices in this way does not violate local laws or warranty terms. In some jurisdictions, the manipulation of radio signals may be regulated by law.

## Summary

Controlling Somfy RTS devices via an app requires an understanding of the protocol, the use of appropriate signal cloning hardware, microcontroller programming and integration with a mobile or web app. This is an advanced DIY project that can be very rewarding to complete, but requires accuracy and adherence to the legal aspects of using RF devices.

Hopefully this step-by-step analysis will help you with your project. If you have more questions or need additional help, please feel free to ask. Good luck!