ESP_Marley_MQTT

Control your Marley Fresh air heat exchanger MEnV with ESP8266 and MQTT
This project was tested with Marley MEnV 180mm (1. Edition)

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Hardware Requirements

ESP-Module

Any kind of ESP with SPI interface and at least 2 GPIO to select TX and RX.
I have used a Wemos D1 mini based on ESP8266

433Mhz Module

For the 433Mhz communication with the Marley MEnV, I recomment the CC1101 Module, that is able to send and receive within one module.

Wiring

Wemos D1	CC1101
D1	GD02
D2	GD00
D5	SCLK
D6	SO
D7	SI
D8	CSN

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MQTT Communication

You can control the MEnV with the following commands:

Topic: esp_marley/cmd/power  
Payload:  0=OFF / 1=OFF

Topic: esp_marley/cmd/summer  
Payload:  1=ON

Topic: esp_marley/cmd/interval  
Payload:  1=SLOW / 2=MIDDLE / 3=FAST

As Status you will get informations as JSON Object:

Topic: esp_marley/info =  {  
    "mode":"OFF/SUMMER/INTERVAL",  
    "speed":"NONE/SLOW/MIDDLE/FAST",  
    "direction":"NONE/IN/OUT"  
}

Topic: esp_marley/wifi = {  
    "status":"online",  
    "rssi":"-50",  
    "signal":"90",  
    "ip":"192.168.1.1",  
    "date-time":"01.01.2022 - 10:20:30"  
}

Topic: esp_marley/received = {  
    "data":"0x8EA06E",  
    "delay":"300",  
    "bit":"24",  
    "protocol":"1",  
    "rssi":"-40"  
}