Arduino USB gateway for relay with buttons



  • Hello.
    This is my first post.
    I use HA since 0.3 version.
    All automations i have build on sonoffs.

    Now in new flat i want make all wired automation.

    Does anyone make a gateway on arduino Mega with relay and buttons connected to arduino?

    I search for gateway skatch that work with HA via USB.

    Maybe someone can help me?

    Regards


  • Mod

    Welcome to the MySensors community @mredone

    Here is an example sketch for relay with button. Wiring for relay and button is the same for Mega. Wiring for the radio is different, see https://www.mysensors.org/build/connect_radio for details.



  • This post is deleted!


  • I have a sketch with 2 relays, with option save to eprom.
    But i have problem in Home Assistant.
    I see relay in dashboard but i can't change it state from dashboard.
    Home Assistant update state only when i change relay with button

    // Enable debug prints to serial monitor
    #define MY_DEBUG 
    
    
    // Enable and select radio type attached
    //#define MY_RADIO_NRF24
    //#define MY_RADIO_RFM69
    
    // Set LOW transmit power level as default, if you have an amplified NRF-module and
    // power your radio separately with a good regulator you can turn up PA level. 
    //#define MY_RF24_PA_LEVEL RF24_PA_LOW
    
    // Enable serial gateway
    #define MY_GATEWAY_SERIAL
    
    // Define a lower baud rate for Arduino's running on 8 MHz (Arduino Pro Mini 3.3V & SenseBender)
    #if F_CPU == 8000000L
    #define MY_BAUD_RATE 38400
    #endif
    
    // Flash leds on rx/tx/err
    // #define MY_LEDS_BLINKING_FEATURE
    // Set blinking period
    // #define MY_DEFAULT_LED_BLINK_PERIOD 300
    
    // Inverses the behavior of leds
    // #define MY_WITH_LEDS_BLINKING_INVERSE
    
    // Enable inclusion mode
    #define MY_INCLUSION_MODE_FEATURE
    // Enable Inclusion mode button on gateway
    #define MY_INCLUSION_BUTTON_FEATURE
    
    // Inverses behavior of inclusion button (if using external pullup)
    //#define MY_INCLUSION_BUTTON_EXTERNAL_PULLUP
    
    // 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 
    
    // Uncomment to override default HW configurations
    //#define MY_DEFAULT_ERR_LED_PIN 4  // Error led pin
    //#define MY_DEFAULT_RX_LED_PIN  6  // Receive led pin
    //#define MY_DEFAULT_TX_LED_PIN  5  // the PCB, on board LED
    
    #include <SPI.h>
    #include <MySensors.h>  
    #include <Bounce2.h>
    
    // Enable repeater functionality for this node
    #define MY_REPEATER_FEATURE
    
    
    #define RELAY_1  4  // Arduino Digital I/O pin number for first relay (second on pin+1 etc)
    #define RELAY_2  5
    #define NUMBER_OF_RELAYS 2 // Total number of attached relays
    #define RELAY_ON 0  // GPIO value to write to turn on attached relay
    #define RELAY_OFF 1 // GPIO value to write to turn off attached relay
    
    #define BUTTON_PIN A1
    #define BUTTON2_PIN A2
    
    
    void before() { 
      for (int sensor=1, pin=RELAY_1; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
        // Then set relay pins in output mode
        pinMode(pin, OUTPUT);   
        // Set relay to last known state (using eeprom storage) 
        digitalWrite(pin, loadState(sensor)?RELAY_ON:RELAY_OFF);
      }
    }
    Bounce debouncer = Bounce();
    Bounce debouncer2 = Bounce();
    
    void setup() { 
      // Setup locally attached sensors
      delay(10000);
       // Setup the button.
      pinMode(BUTTON_PIN, INPUT_PULLUP);
      pinMode(BUTTON2_PIN, INPUT_PULLUP);
      // After setting up the button, setup debouncer.
      debouncer.attach(BUTTON_PIN);
      debouncer.interval(5);
      debouncer2.attach(BUTTON2_PIN);
      debouncer2.interval(5);
    
      //presentation();
    }
    void presentation()  
    {   
      // Send the sketch version information to the gateway and Controller
      sendSketchInfo("Relay", "1.0");
    
      for (int sensor=1, pin=RELAY_1; sensor<=NUMBER_OF_RELAYS;sensor++, pin++) {
        // Register all sensors to gw (they will be created as child devices)
        present(sensor, S_BINARY);
      }
    }
    
    MyMessage msg(1, V_STATUS);
    MyMessage msg2(2, V_STATUS);
    
    void loop() { 
      // Send locally attached sensor data here 
      if (debouncer.update()) {
        // Get the update value.
        int value = debouncer.read();
        // Send in the new value.
        if(value == LOW){
             saveState(1, !loadState(1));
             digitalWrite(RELAY_1, loadState(1)?RELAY_ON:RELAY_OFF);
             send(msg.set(loadState(1)));
             }
      }
      if (debouncer2.update()) {
          int value2 = debouncer2.read();
        if(value2 == LOW){
             saveState(2, !loadState(2));
             digitalWrite(RELAY_2, loadState(2)?RELAY_ON:RELAY_OFF);
             send(msg2.set(loadState(2)));
             }
      }
    }
    
    
    void receive(const MyMessage &message) {
      // We only expect one type of message from controller. But we better check anyway.
      if (message.type==V_STATUS) {
         // Change relay state
         digitalWrite(message.sensor-1+RELAY_1, message.getBool()?RELAY_ON:RELAY_OFF);
         // Store state in eeprom
         saveState(message.sensor, message.getBool());
         // Write some debug info
         Serial.print("Incoming change for sensor:");
         Serial.print(message.sensor);
         Serial.print(", New status: ");
         Serial.println(message.getBool());
       } 
    }
    
    

  • Plugin Developer

    You need to feedback the state change to home assistant by sending the new state from the receive function after the calls to digitalWrite and saveState.



  • Ehh.
    I need a little help.
    I have a problem with change relay to light in HA.

    And i use in HA optimistic: true. Without it i can't change status of relay.

    My knowledge about programming is to low.


 

263
Online

7.7k
Users

8.6k
Topics

92.3k
Posts