ESP8266 connect to pimatic-mqtt-simple

---

I’m looking for an example sketch (Arduino IDE) which uses MQTT for sending data from ESP8266 to Pimatic plugin “pimatic-mqtt-simple”.
The idea is to use the ESP8266 for motion detection, but later on also for temperature sensor etc.
I was looking into ESPeasy, but I doubt if one of the MQTT protocolls from ESPeasy is supported by the pimatic plugin.

@cees said:

ESPeasy

It shouldn’t be too hard to alter the ESPEasy to be used with pimatic, I think the Domoticz MQTT protocol plugin is quite close to what pimatic expects. I know it has been asked at the ESPEasy forum a while ago, but the folks over there didn’t care too much to look into it. I think it shouldn’t be too hard to adapt either the ESPEasy software or the pimatic-simple-mqtt plugin.
On the other hand, adding a HTTP protocol for pimatic to ESPEasy would also be possible.

The code for sending to Thingspeak for instance is quite similar to which is used in esp8266-pimatic-arduino:
https://github.com/ESP8266nu/ESPEasy/blob/master/_C004.ino:

    String postDataStr = SecuritySettings.ControllerPassword; // "0UDNN17RW6XAS2E5" // api key
    switch (event->sensorType)
    {
      case SENSOR_TYPE_SINGLE:                      // single value sensor, used for Dallas, BH1750, etc
        postDataStr += F("&field");
        postDataStr += event->idx;
        postDataStr += "=";
        postDataStr += String(UserVar[event->BaseVarIndex]);
        break;
      case SENSOR_TYPE_TEMP_HUM:                      // dual value
      case SENSOR_TYPE_TEMP_BARO:
        postDataStr += F("&field");
        postDataStr += event->idx;
        postDataStr += "=";
        postDataStr += String(UserVar[event->BaseVarIndex]);
        postDataStr += F("&field");
        postDataStr += event->idx + 1;
        postDataStr += "=";
        postDataStr += String(UserVar[event->BaseVarIndex + 1]);
        break;
      case SENSOR_TYPE_SWITCH:
        break;
    }
    postDataStr += F("\r\n\r\n");

    String postStr = F("POST /update HTTP/1.1\n");
    postStr += F("Host: api.thingspeak.com\n");
    postStr += F("Connection: close\n");
    postStr += F("X-THINGSPEAKAPIKEY: ");
    postStr += SecuritySettings.ControllerPassword;
    postStr += "\n";
    postStr += F("Content-Type: application/x-www-form-urlencoded\n");
    postStr += F("Content-Length: ");
    postStr += postDataStr.length();
    postStr += F("\n\n");
    postStr += postDataStr;

    // This will send the request to the server
    client.print(postStr);

esp8266-pimatic-arduino:

 //Send Humidity
yourdata = "{\"type\": \"value\", \"valueOrExpression\": \"" + String(humidity) + "\"}";

client.print("PATCH /api/variables/");
client.print(espName);
client.print("-hum HTTP/1.1\r\n");
client.print("Authorization: Basic ");
client.print(authValEncoded);
client.print("\r\n");
client.print("Host: " + host +"\r\n");
client.print("Content-Type:application/json\r\n");
client.print("Content-Length: ");
client.print(yourdata.length());
client.print("\r\n\r\n");
client.print(yourdata);

  delay(500);

  //Send Temperature
  yourdata = "{\"type\": \"value\", \"valueOrExpression\": \"" + String(temperature) + "\"}";

client.print("PATCH /api/variables/");
client.print(espName);
client.print("-tem HTTP/1.1\r\n");
client.print("Authorization: Basic ");
client.print(authValEncoded);
client.print("\r\n");
client.print("Host: " + host +"\r\n");
client.print("Content-Type:application/json\r\n");
client.print("Content-Length: ");
client.print(yourdata.length());
client.print("\r\n\r\n");
client.print(yourdata);

I’ve used this one
https://github.com/tuanpmt/espduino
that sends data to mqtt, and the pimatic mqtt plugin shows it

@Rene-Arts http://forum.pimatic.org/topic/1367/espeasy-multisensor-device-based-on-esp8266