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    donhuan78p

    @donhuan78p

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    Best posts made by donhuan78p

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    Latest posts made by donhuan78p

    • RE: 💬 Air Humidity Sensor - DHT

      ...no Problem:

      /**
       * The MySensors Arduino library handles the wireless radio link and protocol
       * between your home built sensors/actuators and HA controller of choice.
       * The sensors forms a self healing radio network with optional repeaters. Each
       * repeater and gateway builds a routing tables in EEPROM which keeps track of the
       * network topology allowing messages to be routed to nodes.
       *
       * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
       * Copyright (C) 2013-2015 Sensnology AB
       * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
       *
       * Documentation: http://www.mysensors.org
       * Support Forum: http://forum.mysensors.org
       *
       * This program is free software; you can redistribute it and/or
       * modify it under the terms of the GNU General Public License
       * version 2 as published by the Free Software Foundation.
       *
       *******************************
       *
       * REVISION HISTORY
       * Version 1.0: Henrik EKblad
       * Version 1.1 - 2016-07-20: Converted to MySensors v2.0 and added various improvements - Torben Woltjen (mozzbozz)
       * 
       * DESCRIPTION
       * This sketch provides an example of how to implement a humidity/temperature
       * sensor using a DHT11/DHT-22.
       *  
       * For more information, please visit:
       * http://www.mysensors.org/build/humidity
       * 
       */
      
      // Enable debug prints
      #define MY_DEBUG
      
      // Enable and select radio type attached 
      #define MY_RADIO_NRF24
      //#define MY_RADIO_RFM69
      //#define MY_RS485
       
      #include <SPI.h>
      #include <MySensors.h>  
      #include <DHT.h>
      
      // Set this to the pin you connected the DHT's data pin to
      #define DHT_DATA_PIN 2
      
      // Set this offset if the sensor has a permanent small offset to the real temperatures
      #define SENSOR_TEMP_OFFSET 0
      
      // Sleep time between sensor updates (in milliseconds)
      // Must be >1000ms for DHT22 and >2000ms for DHT11
      static const uint64_t UPDATE_INTERVAL = 30000;
      
      // Force sending an update of the temperature after n sensor reads, so a controller showing the
      // timestamp of the last update doesn't show something like 3 hours in the unlikely case, that
      // the value didn't change since;
      // i.e. the sensor would force sending an update every UPDATE_INTERVAL*FORCE_UPDATE_N_READS [ms]
      static const uint8_t FORCE_UPDATE_N_READS = 10;
      
      #define CHILD_ID_HUM 0
      #define CHILD_ID_TEMP 1
      
      float lastTemp;
      float lastHum;
      uint8_t nNoUpdatesTemp;
      uint8_t nNoUpdatesHum;
      bool metric = true;
      
      MyMessage msgHum(CHILD_ID_HUM, V_HUM);
      MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
      DHT dht;
      
      
      void presentation()  
      { 
        // Send the sketch version information to the gateway
        Serial.println("Presentation");
        sendSketchInfo("TemperatureAndHumidity", "1.1");
        
        // Register all sensors to gw (they will be created as child devices)
        present(CHILD_ID_HUM, S_HUM);
        present(CHILD_ID_TEMP, S_TEMP);
        
        metric = getConfig().isMetric;
      }
      
      
      void setup()
      {
        Serial.println("vor Presentation");
        
        dht.setup(DHT_DATA_PIN); // set data pin of DHT sensor
        if (UPDATE_INTERVAL <= dht.getMinimumSamplingPeriod()) {
          Serial.println("Warning: UPDATE_INTERVAL is smaller than supported by the sensor!");
        }
        // Sleep for the time of the minimum sampling period to give the sensor time to power up
        // (otherwise, timeout errors might occure for the first reading)
        sleep(dht.getMinimumSamplingPeriod());
      }
      
      
      void loop()      
      {  
      
        Serial.println("loop Anfang");
        
        // Force reading sensor, so it works also after sleep()
        dht.readSensor(true);
        
        // Get temperature from DHT library
        float temperature = dht.getTemperature();
        if (isnan(temperature)) {
          Serial.println("Failed reading temperature from DHT!");
        } else if (temperature != lastTemp || nNoUpdatesTemp == FORCE_UPDATE_N_READS) {
          // Only send temperature if it changed since the last measurement or if we didn't send an update for n times
          lastTemp = temperature;
          if (!metric) {
            temperature = dht.toFahrenheit(temperature);
          }
          // Reset no updates counter
          nNoUpdatesTemp = 0;
          temperature += SENSOR_TEMP_OFFSET;
          send(msgTemp.set(temperature, 1));
      
          #ifdef MY_DEBUG
          Serial.print("T: ");
          Serial.println(temperature);
          #endif
        } else {
          // Increase no update counter if the temperature stayed the same
          nNoUpdatesTemp++;
        }
      
        // Get humidity from DHT library
        float humidity = dht.getHumidity();
        if (isnan(humidity)) {
          Serial.println("Failed reading humidity from DHT");
        } else if (humidity != lastHum || nNoUpdatesHum == FORCE_UPDATE_N_READS) {
          // Only send humidity if it changed since the last measurement or if we didn't send an update for n times
          lastHum = humidity;
          // Reset no updates counter
          nNoUpdatesHum = 0;
          send(msgHum.set(humidity, 1));
          
         #ifdef MY_DEBUG
          Serial.print("H: ");
          Serial.println(humidity);
         #endif
        } else {
          // Increase no update counter if the humidity stayed the same
          nNoUpdatesHum++;
        }
      
        // Sleep for a while to save energy
        sleep(UPDATE_INTERVAL); 
      }
      
      posted in Announcements
      donhuan78p
      donhuan78p
    • RE: 💬 Air Humidity Sensor - DHT

      ...sorry, Typo.
      As expected 🙂

      posted in Announcements
      donhuan78p
      donhuan78p
    • RE: 💬 Air Humidity Sensor - DHT

      Hello,
      thanks a lot for your answer.
      Yes, I did. It produced the Messages as excepted.

      posted in Announcements
      donhuan78p
      donhuan78p
    • RE: 💬 Air Humidity Sensor - DHT

      Hello everybody,
      hope, someone could help a newby 🙂
      I've installed the MQTT - GW and would use the Air/Humidity - sensor. But it doesn't work properly.
      The Connection to the Gateway seems to be okay. But I get no Air/Humidity - Information.
      The sensor does not measure anything.
      I've tried to change the data - pin, I've tried the DHT11 and DHT22 - sensor. No choice.
      I'm getting mad 🙂

      Thanks a lot.

      posted in Announcements
      donhuan78p
      donhuan78p