C++ Script (Arduino) Archieven - Pagina 5 van 15

Module – DS1302 – RTC Tijdklok

BESTELLEN Een RTC tijdklok met batterij, de klok maakt gebruik van de DS1302 chip. Informatie (ENG) The DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial …

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Module – DS1307 – RTC Tijdklok

BESTELLEN Een RTC tijdklok met batterij, de klok maakt gebruik van de DS1307 chip. Informatie (ENG) The DS1307 Serial Real-Time Clock is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially …

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Sensor – AM312 – PIR bewegingssensor

BESTELLEN Informatie (ENG) 1. Low power consumption, small size, easy to install 2. Internal use of digital signal processing, pit interference strong 3. High sensitivity, reliability, and can be widely used in automatic sensing circuit 4. Repeatable trigger mode: that …

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Sensor – HC-SR501 – PIR bewegingssensor

BESTELLEN Informatie Met deze Infrarood bewegings-sensor (PIR) (Passive InfraRed) sensor kun je beweging detecteren, wordt vaak gebruikt als mensen of dieren binnen het sensorbereik bewegen, ze zijn klein, niet duur, verbruiken weinig vermogen en zijn makkelijk te gebruiken. Deze PIR heef …

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ATtiny – Modbus met DHT sensor

Op deze pagina vind je een manier om ATTiny en een Max485 chip te gebruiken als modbus interface voor een DHT sensor. Wat heb je nodig? Hardware ATTiny85 chip Max485 chip (tbv modbus) DHT11 + Weerstand 4.7K Software ATTiny Arduino …

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ATtiny – Modbus met DS18B20 Temperatuur sensor

Op deze pagina vind je een manier om ATTiny en een Max485 chip te gebruiken als modbus interface voor een Dallas 18B20 sensor. Wat heb je nodig? Hardware ATTiny85 chip Max485 chip (tbv modbus) DS18B20 + Weerstand 4.7K Software ATTiny …

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ENC28J60 – Ethernet Module MQTT voorbeeld

Op deze pagina vind je een voorbeeld om via MQTT data te verzenden met een Arduino, ENC28J60 Ethernet module en BME280 sensor. In onderstaande code wel het MQTT adres nog aanpassen:

/*
BME280 MQTT Script
 
Connecting the BME280 Sensor:
Sensor              ->  Board
-----------------------------
Vin (Voltage In)        ->  3.3V
Gnd (Ground)            ->  Gnd
SDA (Serial Data)       ->  D2 on NODEMCU / A4 on Uno/Pro-Mini, 20 on Mega2560/Due, 2 Leonardo/Pro-Micro
SCK/SCL (Serial Clock)  ->  D1 on NodeMCU / A5 on Uno/Pro-Mini, 21 on Mega2560/Due, 3 Leonardo/Pro-Micro
*/

#include <UIPEthernet.h>
#include "PubSubClient.h"
#include <BME280I2C.h>
#include <Wire.h>

#define CLIENT_ID       "UnoMQTT"
#define INTERVAL        3000 // 3 sec delay between publishing

uint8_t mac[6] = {0x00,0x01,0x02,0x03,0x04,0x05};
char msgBuffer[20];
char tempchar[10];
char humchar[10];

EthernetClient ethClient;
PubSubClient mqttClient;
BME280I2C bme; //Default : forced mode, standby time = 1000 ms Oversampling = pressure x1, temperature x1, humidity x1, filter off,

long previousMillis;

void setup() {
  // setup ethernet communication using DHCP
  Ethernet.begin(mac);
  // setup mqtt client
  mqttClient.setClient(ethClient);
  mqttClient.setServer("192.168.2.6",1883); //MQTT SERVER

  // start BME280
  Wire.begin();
  bme.begin();
  previousMillis = millis();
}

void loop() {
  // check interval
  if(millis() - previousMillis > INTERVAL) {
    sendData();
    previousMillis = millis();
  }
  mqttClient.loop();
}

void sendData() {
   float temp(NAN), hum(NAN), pres(NAN);
   BME280::TempUnit tempUnit(BME280::TempUnit_Celsius);
   BME280::PresUnit presUnit(BME280::PresUnit_Pa);
   bme.read(pres, temp, hum, tempUnit, presUnit);

   // Converteer float naar string
   String tempstring = String(temp);
   String humstring = String(hum);
 
   // Converteer String to Array
   tempstring.toCharArray(tempchar, tempstring.length() + 1);
   humstring.toCharArray(humchar, humstring.length() + 1);

  if(mqttClient.connect(CLIENT_ID)) {
    mqttClient.publish("inblaastemperatuur", tempchar);
    mqttClient.publish("inblaasluchtvochtigheid", humchar); 
  }
}

BME280 MQTT Script

Connecting the BME280 Sensor:

Sensor -> Board

-----------------------------

Vin (Voltage In) -> 3.3V

Gnd (Ground) -> Gnd

SDA (Serial Data) -> D2 on NODEMCU / A4 on Uno/Pro-Mini, 20 on Mega2560/Due, 2 Leonardo/Pro-Micro

SCK/SCL (Serial Clock) -> D1 on NodeMCU / A5 on Uno/Pro-Mini, 21 on Mega2560/Due, 3 Leonardo/Pro-Micro

#include <UIPEthernet.h>

#include "PubSubClient.h"

#include <BME280I2C.h>

#include <Wire.h>

#define CLIENT_ID "UnoMQTT"

#define INTERVAL 3000 // 3 sec delay between publishing

uint8_t mac[6] = {0x00,0x01,0x02,0x03,0x04,0x05};

char msgBuffer[20];

char tempchar[10];

char humchar[10];

EthernetClient ethClient;

PubSubClient mqttClient;

BME280I2C bme; //Default : forced mode, standby time = 1000 ms Oversampling = pressure x1, temperature x1, humidity x1, filter off,

long previousMillis;

void setup() {

// setup ethernet communication using DHCP

Ethernet.begin(mac);

// setup mqtt client

mqttClient.setClient(ethClient);

mqttClient.setServer("192.168.2.6",1883); //MQTT SERVER

// start BME280

Wire.begin();

bme.begin();

previousMillis = millis();

}

void loop() {

// check interval

if(millis() - previousMillis > INTERVAL) {

sendData();

previousMillis = millis();

}

mqttClient.loop();

}

void sendData() {

float temp(NAN), hum(NAN), pres(NAN);

BME280::TempUnit tempUnit(BME280::TempUnit_Celsius);

BME280::PresUnit presUnit(BME280::PresUnit_Pa);

bme.read(pres, temp, hum, tempUnit, presUnit);

// Converteer float naar string

String tempstring = String(temp);

String humstring = String(hum);

// Converteer String to Array

tempstring.toCharArray(tempchar, tempstring.length() + 1);

humstring.toCharArray(humchar, humstring.length() + 1);

if(mqttClient.connect(CLIENT_ID)) {

mqttClient.publish("inblaastemperatuur", tempchar);

mqttClient.publish("inblaasluchtvochtigheid", humchar);

}

Resultaat in Node-red:

[{"id":"a7721f5c.10366","type":"mqtt in","z":"9c025a4c.21ac28","name":"","topic":"inblaastemperatuur","qos":"2","broker":"cfdab20e.ecec8","x":270,"y":280,"wires":[["5eab5a09.c39854"]]},{"id":"5eab5a09.c39854","type":"debug","z":"9c025a4c.21ac28","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":530,"y":280,"wires":[]},{"id":"19e96d25.d95a43","type":"mqtt in","z":"9c025a4c.21ac28","name":"","topic":"inblaasluchtvochtigheid","qos":"2","broker":"cfdab20e.ecec8","x":280,"y":340,"wires":[["5eab5a09.c39854"]]},{"id":"cfdab20e.ecec8","type":"mqtt-broker","z":"","name":"Local MQTT","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","willTopic":"","willQos":"0","willPayload":""}]

[{"id":"a7721f5c.10366","type":"mqtt in","z":"9c025a4c.21ac28","name":"","topic":"inblaastemperatuur","qos":"2","broker":"cfdab20e.ecec8","x":270,"y":280,"wires":[["5eab5a09.c39854"]]},{"id":"5eab5a09.c39854","type":"debug","z":"9c025a4c.21ac28","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":530,"y":280,"wires":[]},{"id":"19e96d25.d95a43","type":"mqtt in","z":"9c025a4c.21ac28","name":"","topic":"inblaasluchtvochtigheid","qos":"2","broker":"cfdab20e.ecec8","x":280,"y":340,"wires":[["5eab5a09.c39854"]]},{"id":"cfdab20e.ecec8","type":"mqtt-broker","z":"","name":"Local MQTT","broker":"localhost","port":"1883","clientid":"","usetls":false,"compatmode":true,"keepalive":"60","cleansession":true,"birthTopic":"","birthQos":"0","birthPayload":"","willTopic":"","willQos":"0","willPayload":""}]

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Categorie: C++ Script (Arduino)