I have successfully integrated a DS18B20 temp sensor ( which is very precise) to a Nodemcu board and using MQTT to report to HA. It works great!
Now I would like to setup a seperate sensor on a seperate Nodemcu. This is the problem. I cannot seem to understand how to make it work! It seems the HA thinks they are one in the same, or reports that it cannot assign the node as it already exists. I have tried to understand defining the nodes and childs, but I just cannot understand how to do it.
Maybe it is not possible since I am limited to one MQTT?
Any help would be appreciated.
Here is the sketch that is working fine
/**
* 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 [email protected]
* Copyright © 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
*
* DESCRIPTION
* The ESP8266 MQTT gateway sends radio network (or locally attached sensors) data to your MQTT broker.
* The node also listens to MY_MQTT_TOPIC_PREFIX and sends out those messages to the radio network
*
* LED purposes:
* - To use the feature, uncomment any of the MY_DEFAULT_xx_LED_PINs in your sketch
* - RX (green) - blink fast on radio message recieved. In inclusion mode will blink fast only on presentation recieved
* - TX (yellow) - blink fast on radio message transmitted. In inclusion mode will blink slowly
* - ERR (red) - fast blink on error during transmission error or recieve crc error
*
* See http://www.mysensors.org/build/esp8266_gateway for wiring instructions.
* nRF24L01+ ESP8266
* VCC VCC
* CE GPIO4
* CSN/CS GPIO15
* SCK GPIO14
* MISO GPIO12
* MOSI GPIO13
*
* Not all ESP8266 modules have all pins available on their external interface.
* This code has been tested on an ESP-12 module.
* The ESP8266 requires a certain pin configuration to download code, and another one to run code:
* - Connect REST (reset) via 10K pullup resistor to VCC, and via switch to GND (‘reset switch’)
* - Connect GPIO15 via 10K pulldown resistor to GND
* - Connect CH_PD via 10K resistor to VCC
* - Connect GPIO2 via 10K resistor to VCC
* - Connect GPIO0 via 10K resistor to VCC, and via switch to GND (‘bootload switch’)
*
* Inclusion mode button:
* - Connect GPIO5 via switch to GND (‘inclusion switch’)
*
* Hardware SHA204 signing is currently not supported!
*
* Make sure to fill in your ssid and WiFi password below for ssid & pass.
*/
// Enable debug prints to serial monitor
//#define MY_DEBUG
// Use a bit lower baudrate for serial prints on ESP8266 than default in MyConfig.h
#define MY_BAUD_RATE 9600
// Enables and select radio type (if attached)
//#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
#define MY_GATEWAY_MQTT_CLIENT
#define MY_GATEWAY_ESP8266
// Set this node's subscribe and publish topic prefix
#define MY_MQTT_PUBLISH_TOPIC_PREFIX "mygateway1-out"
#define MY_MQTT_SUBSCRIBE_TOPIC_PREFIX "mygateway1-in"
// Set MQTT client id
#define MY_MQTT_CLIENT_ID "mysensors-2"
// Enable these if your MQTT broker requires usenrame/password
#define MY_MQTT_USER "XXXX"
#define MY_MQTT_PASSWORD "XXXXX"
// Set WIFI SSID and password
#define MY_ESP8266_SSID "xxx"
#define MY_ESP8266_PASSWORD "xxx"
// Set the hostname for the WiFi Client. This is the hostname
// it will pass to the DHCP server if not static.
#define MY_ESP8266_HOSTNAME "mqtt-sensor-gateway"
// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
//#define MY_IP_ADDRESS 192,168,178,87
// If using static ip you need to define Gateway and Subnet address as well
//#define MY_IP_GATEWAY_ADDRESS 192,168,178,1
//#define MY_IP_SUBNET_ADDRESS 255,255,255,0
// MQTT broker ip address.
#define MY_CONTROLLER_IP_ADDRESS 192, 168, 0, 35
// The MQTT broker port to to open
#define MY_PORT 1883
/*
// Enable inclusion mode
#define MY_INCLUSION_MODE_FEATURE
// Enable Inclusion mode button on gateway
#define MY_INCLUSION_BUTTON_FEATURE
// Set inclusion mode duration (in seconds)
#define MY_INCLUSION_MODE_DURATION 60
// Digital pin used for inclusion mode button
#define MY_INCLUSION_MODE_BUTTON_PIN 3
// Set blinking period
#define MY_DEFAULT_LED_BLINK_PERIOD 300
// Flash leds on rx/tx/err
#define MY_DEFAULT_ERR_LED_PIN 16 // Error led pin
#define MY_DEFAULT_RX_LED_PIN 16 // Receive led pin
#define MY_DEFAULT_TX_LED_PIN 16 // the PCB, on board LED
*/
#include <ESP8266WiFi.h>
//#include <MySensors.h>
/**
* 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 <[email protected]>
* 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.
*
*******************************
*
* DESCRIPTION
*
* Example sketch showing how to send in DS1820B OneWire temperature readings back to the controller
* http://www.mysensors.org/build/temp
*/
// Enable debug prints to serial monitor
#define MY_DEBUG
#define MY_NODE_ID 0
// Enable and select radio type attached
//#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69
#include <SPI.h>
#include <MySensors.h>
#include <DallasTemperature.h>
#include <OneWire.h>
#define COMPARE_TEMP 1 // Send temperature only if changed? 1 = Yes 0 = No
#define ONE_WIRE_BUS D4 // Pin where dallase sensor is connected
#define MAX_ATTACHED_DS18B20 16
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass the oneWire reference to Dallas Temperature.
float lastTemperature[MAX_ATTACHED_DS18B20];
int numSensors=0;
bool receivedConfig = false;
bool metric = false;
// Initialize temperature message
MyMessage msg(0,V_TEMP);
void before()
{
// Startup up the OneWire library
sensors.begin();
}
void setup()
{
// requestTemperatures() will not block current thread
sensors.setWaitForConversion(false);
}
void presentation() {
// Send the sketch version information to the gateway and Controller
sendSketchInfo("Temperature Sensor", "1.1");
// Fetch the number of attached temperature sensors
numSensors = sensors.getDeviceCount();
// Present all sensors to controller
for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {
present(i, S_TEMP);
}
}
void loop()
{
// Fetch temperatures from Dallas sensors
sensors.requestTemperatures();
// query conversion time and sleep until conversion completed
int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
// sleep() call can be replaced by wait() call if node need to process incoming messages (or if node is repeater)
sleep(conversionTime);
// Read temperatures and send them to controller
for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {
// Fetch and round temperature to one decimal
float temperature = sensors.getTempFByIndex(0);
// Only send data if temperature has changed and no error
#if COMPARE_TEMP == 1
if (lastTemperature[i] != temperature && temperature != -127.00 && temperature != 200.00) {
#else
if (temperature != -127.00 && temperature != 200.00) {
#endif
// Send in the new temperature
send(msg.setSensor(i).set(temperature,1));
// Save new temperatures for next compare
lastTemperature[i]=temperature;
}
}
sleep(SLEEP_TIME);
}
Here is the part from the configuration.yaml file
mysensors:
gateways:
- device: mqtt
topic_in_prefix: ‘mygateway1-out’
topic_out_prefix: ‘mygateway1-in’
optimistic: false
persistence: true
retain: false
version: 2.0