• @jkandasa I start to play with MyController today looks good what I am seeing so far. However i have a problem with the my relay node. I am running Mysensor beta version 2 on all my nodes. Mycontroller pick the relay up but is I look at the node info it say there is no sensors why will this be the case?



  • i believe we might have issue to display sensors count in node details page. let me have a look. thank you

  • @jkandasa do this version support relays and dimmer sensors? As I also don't get my dimmer sensor to work.

  • @fwessels yes this version should support dimmer and relay.

  • @jkandasa Are you using the standard sensors sketch or did you changes anything in the sketch as my relays and dimmers sensors are not working

  • @fwessels with standard sketch only. mycontroller will send set type message

  • @jkandasa If I look at the Variables mapper I don't see anything for lights (relay) what Sensor type do you use for the relay?



  • sensor type S_BINARY and variable type V_STATUS

  • @jkandasa I try everything and just cannot get the relay node working what can the issue be?

  • @fwessels can you share your node code?

  • Hi @jkandasa here is my code

     * 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.
     * Version 1.0 - Henrik Ekblad
     * Example sketch for a "light switch" where you can control light or something 
     * else from both HA controller and a local physical button 
     * (connected between digital pin 3 and GND).
     * This node also works as a repeader for other nodes
     * http://www.mysensors.org/build/relay
    // Enable debug prints to serial monitor
    #define MY_DEBUG 
    #define MY_NODE_ID 15
    // Enable and select radio type attached
    //#define MY_RADIO_NRF24
    #define MY_RADIO_RFM69
    // Enabled repeater feature for this node
    #include <SPI.h>
    #include <MySensor.h>
    #include <Bounce2.h>
    #define RELAY_PIN  4  // Arduino Digital I/O pin number for relay 
    #define BUTTON_PIN  3  // Arduino Digital I/O pin number for button 
    #define CHILD_ID 1   // Id of the sensor child
    #define RELAY_ON 1
    #define RELAY_OFF 0
    Bounce debouncer = Bounce(); 
    int oldValue=0;
    bool state;
    MyMessage msg(CHILD_ID,V_STATUS);
    void setup()  
      // Setup the button
      // Activate internal pull-up
      // After setting up the button, setup debouncer
      // Make sure relays are off when starting up
      digitalWrite(RELAY_PIN, RELAY_OFF);
      // Then set relay pins in output mode
      pinMode(RELAY_PIN, OUTPUT);   
      // Set relay to last known state (using eeprom storage) 
     // state = loadState(CHILD_ID);
     // digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
    void presentation()  {
      // Send the sketch version information to the gateway and Controller
      sendSketchInfo("Main Bedroom Relay & Button B2", "2.0");
      // Register all sensors to gw (they will be created as child devices)
      present(CHILD_ID, S_BINARY);
    *  Example on how to asynchronously check for new messages from gw
    void loop() 
      // Get the update value
      int value = debouncer.read();
      if (value != oldValue && value==0) {
          send(msg.set(state?false:true), true); // Send new state and request ack back
      oldValue = value;
    void receive(const MyMessage &message) {
      // We only expect one type of message from controller. But we better check anyway.
      if (message.isAck()) {
         Serial.println("This is an ack from gateway");
      if (message.type == V_STATUS) {
         // Change relay state
         state = message.getBool();
         digitalWrite(RELAY_PIN, state?RELAY_ON:RELAY_OFF);
         // Store state in eeprom
         //saveState(CHILD_ID, state);
         // Write some debug info
         Serial.print("Incoming change for sensor:");
         Serial.print(", New status: ");

  • @fwessels I tested with MY_RADIO_NRF24 as I do not have MY_RADIO_RFM69. Everything works perfectly for me. Kindly check your radio and hardware circuits.

    if you want to update sensors name by default write like this present(CHILD_ID, S_BINARY, "Relay Sensor");

  • anyone else noticed that it does not work here?

    void receive(const MyMessage &message) {
    // We only expect one type of message from controller. But we better check anyway.
    if (message.isAck()) {
    Serial.println("This is an ack from gateway");

    server does not respond to a command (message.isAck())

    it turns out that there is no certainty that my relays included.
    MYCONTROLLER.ORG button in the interface does not show the correct status of the node.

  • @greengo

    message.isAck() is all about mysensors framework. If it is ack message returns true otherwise false

  • @jkandasa
    in fact of the matter is that the server does not return the values, although the sensor sends.
    before, I used EasyIoT server http://iot-playground.com/download
    and there it works.

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