In Auto Mode, DHT11 & LDR will control the Relays Automatically. All we have to do is connect a relay module and set the parameter to turn ON and OFF the any AC appliance according to the intensity of the light. There is a red LED that is lit when power is applied to the module. Home Automation with NodeMCU LDR Temperature Control Relay, Uploading the Gerber File and Set the Parameters, DHT11 Temperature & Humidity Sensor (4 pins). Lake Stevens WA 98258, USA. The LDR varies its value (ohms) depending on the amount of light that illuminates it. After testing all the features of the smart relay module on the breadboard, I have designed the PCB to make the circuit compact and give the project a professional look. 9V Relay module; LDR (Light Dependent Resistor) ... relay circuit has two sections one is sensor-operational amplifier and another one is decade counter to drive the Relay. I have explained all the details in the, , we can control the relay module from the. We support multiple shipping partners to cover even the remotest place. Instructions: This blog is not limited to any topics or types of blogs. Compare our prices with shipping and you will find we provide the best value! 3. the public side, normally open, normally closed three ports, the equivalent of a dual-control switch, relay coil power, public end and often the beginning of conduction, radio, public end normally closed terminal conduction. 7. A blue LED is illuminated when the relay is energized. Here RST pin is active low, so the Touch sensor connected with the RST pin should be active low. Automatically control a load based on the ambient light level. Some resources to help you getting started with STM32 programming. Turning the pot CW increases the brightness trip-point. Color: White & Blue Quantity: 1 pcs Size(Except bracket): approx. Blynk App, temperature sensor, and LDR. Push Switch/ button 4 no (or) TTP223 Touch Sensor (3no), 14. #define DHTPIN 10 //SD3 pin connected with DHT, //#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321, //#define DHTTYPE DHT21 // DHT 21, AM2301, #define SCREEN_WIDTH 128 // OLED display width, in pixels, #define SCREEN_HEIGHT 32 // OLED display height, in pixels, // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins), #define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin). Home appliances controlled from Mobile using Blynk App, 2. Your cart will total 18 points that can be converted into a voucher of ₹ 0.90. I do love to make different DIY electronics projects & share it on my YouTube channel Tech StudyCell. Limited Services & functionality due to COVID-19 outbreak & complete lockdown in India .We have taken steps to protect the health of our team members. Monitor LIVE room temperature & Humidity reading on OLED and Smartphone, 5. 5 x 4.2 x 3.3 cm (H x L x W) Shielding the LDR from the light should then cause the blue LED to turn on and an audible click heard from the relay as it switches. "); // Initialising the UI will init the display too. In Auto mode, the relay module controlled by the DHT11 sensor and LDR. Connect the home appliances as per the circuit diagram. In the Manual Mode, this relay module can be controlled from a mobile or smartphone and, manual touch switch (TTP223). For more such projects Please follow TechStudyCell. I have used the 3 button widgets to control the relay module and change the mode. ** In this project, you can use both 0.96" OLED and 1.3" OLED display. Bymond360 is an official Blog of Bymond targeting all types of audiences & readers. digitalWrite(RELAY_PIN_1, toggleState_1); digitalWrite(RELAY_PIN_2, toggleState_2); if (digitalRead(PUSH_BUTTON_1) == HIGH) {. Submit the order and proceed for the payment. I have shared all the required information for this project. My PCBs took 2 days to get manufactured and arrived within a week using the DHL delivery option. WhatsApp us: +961 3 675686 or +961 71 416448, Lebanon - Beirut - Sin El Fil - Horch Tabet - Centre Ivoire - Block A - Ground Floor, © 2020 C.B.Electronics – All rights reserved, Powered by – Designed with the Customizr theme, Call us within opening hours: +961 1 483031. The relay has both NO (Normally Open) and NC (Normally Closed) contacts so the module can either be used to energize a load when brightness goes up past the trip-point value or when it goes down below that level. A voltage supply is given to the load. Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2); if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {, // Setup a function to be called every 500 ms. timer.setInterval(500L, checkPhysicalButton); // Setup a function to be called every second, // Setup a function to be called every 2 second, if (digitalRead(PUSH_BUTTON_CMODE) == HIGH){, digitalWrite(RELAY_PIN_1, HIGH); // turn ON relay 1, digitalWrite(RELAY_PIN_1, LOW); // turn OFF relay 1, digitalWrite(RELAY_PIN_2, HIGH); // turn ON relay 2, digitalWrite(RELAY_PIN_2, LOW); // turn OFF relay 2, * https://github.com/ThingPulse/esp8266-oled-ssd1306, // Declaration for an SH1106 display connected to I2C (SDA, SCL pins). In the tutorial video, I have explained all the steps for making this Smart Home device in detail. Feel free to visit us anytime during our normal opening hours: 5V Light Photoswitch Sensor Switch LDR Photoresistor Relay Module Light Detection Photosensitive Sensor Board. Download the attached Code for this NodeMCU project. In the Manual mode, we can control the relay module from the S1 & S2 touch switches or from the Blynk App.We can always monitor the real-time feedback status of the switches from the Blynk App. Circuit of the Home Automation Project using NodeMCU, DHT11, LDR, Touch Sensor to control 2 channel relay module. Load Power: AC 250V/10A, DC 30V/10A. The more light less resistance and less light more resistance. You can remove the LDR and can connect other sensors like NTC temperature sensor or humidity sensor, etc. I have placed the complete circuit inside a plastic box. Use: open during the day or night, during the day and switch off the evening off, without manual operation With design, installation, reliable, small size, light weight, easy installation, long life advantages. Supports multiple netbanking, debit and credit cards options. Bymond Classroom Built for a sustainable & permanent solution for online classes , trainings & workshops as well as meeting & video conferncing. Categories: Arduino, Modules, Sensors Tags: arduino, ldr, module, relay, sensor. S1 & S2 to control the relay module manually. Description Reviews (0) Description. Thank you for your time & Happy Learning. Select the NodeMCU 12E board and proper PORT. 3 Click on the "Add your Gerber file" button. Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); display.drawLine(0,18, display.width()-1,18, WHITE); Blynk.virtualWrite(VPIN_BUTTON_C, switchMode); digitalWrite(RELAY_PIN_1, HIGH); // turn on relay 1, digitalWrite(RELAY_PIN_1, LOW); // turn off relay 1, digitalWrite(RELAY_PIN_2, HIGH); // turn on relay 2, digitalWrite(RELAY_PIN_2, LOW); // turn off relay 2, display.print(humidity1); // display humidity, float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit. Share it now! As we know the property of LDR that during the day time, its resistance is low, the voltage at the non-inverting input (i.e. But it will still function as LDR based light switch. Categories: ALL PRODUCTS, MODULES, SENSORS. NodeMCU code for Smart Relay V4.2 (0.96" OLED), NodeMCU code for Smart RelayV4.2 (1.3" OLED). When the brightness goes below the trip-point value, an LM393 voltage comparator IC energizes the relay and it switches ON. PACKAGE INCLUDES: Light Sensitive LDR Relay Module 12V w/ LDR sensor; KEY FEATURES OF LIGHT SENSITIVE LDR RELAY MODULE 12V: Automatically controls the relay based on light intensity