Управление реле может быть очень полезным. Вы можете включать и выключать свет. Почему бы не контролировать свои двери гаража или обогреватель?
Вы можете найти модули реле с 1, 2, 4, 8 и более каналов. Каждое реле требует один из ваших цифровых выходов Arduino для управления.
Убедитесь, что питание реле модуля подключено отдельно, если вы используете более чем одно реле. Если вы попытаетесь запитать реле напрямую от Arduino, вы обязательно получите перезагрузки и прочие сбои.
Вы можете настроить, сколькими реле нужно управлять в примере эскиза, путем изменения параметра NUMBER_OF_RELAYS. Первое реле использует цифровой выход 3, реле номер два использует цифровой выход 4 и так далее.
Когда нода стартует она выбирает последнее известное состояние реле из памяти контроллера.
Демонстрация
Данное видео, созданное участником сообщества peterwill, показывает как собрать смарт-розетку
Подключение
Реле | Arduino | Комментарий |
---|---|---|
— or GND | GND | Черный |
+ or VCC | +5V | Красный |
S or IN | D3 (цифровой выход) | Зеленый |
Пример
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/* * 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) 2013-2019 Sensnology AB * Full contributor list: https://github.com/mysensors/MySensors/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 * Example sketch showing how to control physical relays. * This example will remember relay state after power failure. * http://www.mysensors.org/build/relay */ // Enable debug prints to serial monitor #define MY_DEBUG // Enable and select radio type attached #define MY_RADIO_RF24 //#define MY_RADIO_NRF5_ESB //#define MY_RADIO_RFM69 //#define MY_RADIO_RFM95 // Enable repeater functionality for this node #define MY_REPEATER_FEATURE #include <MySensors.h> #define RELAY_PIN 4 // Arduino Digital I/O pin number for first relay (second on pin+1 etc) #define NUMBER_OF_RELAYS 1 // Total number of attached relays #define RELAY_ON 1 // GPIO value to write to turn on attached relay #define RELAY_OFF 0 // GPIO value to write to turn off attached relay void before() { for (int sensor=1, pin=RELAY_PIN; 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); } } void setup() { } void presentation() { // Send the sketch version information to the gateway and Controller sendSketchInfo("Relay", "1.0"); for (int sensor=1, pin=RELAY_PIN; sensor<=NUMBER_OF_RELAYS; sensor++, pin++) { // Register all sensors to gw (they will be created as child devices) present(sensor, S_BINARY); } } void loop() { } void receive(const MyMessage &message) { // We only expect one type of message from controller. But we better check anyway. if (message.getType()==V_STATUS) { // Change relay state digitalWrite(message.getSensor()-1+RELAY_PIN, message.getBool()?RELAY_ON:RELAY_OFF); // Store state in eeprom saveState(message.getSensor(), message.getBool()); // Write some debug info Serial.print("Incoming change for sensor:"); Serial.print(message.getSensor()); Serial.print(", New status: "); Serial.println(message.getBool()); } } |
Пример с кнопкой
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/** * 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 * * DESCRIPTION * 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 // Enable and select radio type attached #define MY_RADIO_RF24 //#define MY_RADIO_RFM69 // Enabled repeater feature for this node #define MY_REPEATER_FEATURE #include <MySensors.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_LIGHT); void setup() { // Setup the button pinMode(BUTTON_PIN,INPUT); // Activate internal pull-up digitalWrite(BUTTON_PIN,HIGH); // After setting up the button, setup debouncer debouncer.attach(BUTTON_PIN); debouncer.interval(5); // 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("Relay & Button", "1.0"); // Register all sensors to gw (they will be created as child devices) present(CHILD_ID, S_LIGHT); } /* * Example on how to asynchronously check for new messages from gw */ void loop() { debouncer.update(); // 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_LIGHT) { // 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(message.sensor); Serial.print(", New status: "); Serial.println(message.getBool()); } } |
Документация
Перевёл Антон Вотчицев