Table of Content
So adjust the placing according to the water level. Finally step is to fill the water in the outer pot and then dip the pump on water. Unlike other development boards like Arduino, blue pill nodemcu has only one analogue pin. So how to read two analogue values using one analogue pin.?
How to configure the Blynk app to control any home appliances through the internet. Also explained the code and how to program ESP8266 with Arduino IDE. TBMessage stores the message received from the telegram bot. Msg.text.equalsIgnoreCase() checks if the text received matches with string “light on” or “light off”. If the text received is different from “light on” and “light off” then it sends welcome message back to the telegram. Edit the code given in the example to run it in NodeMCU.
Step 14: Testing the PCB
Only the Echo dot and Nodemcu should be connected with the same wifi. If you use push buttons , then select “Button” for all the GPIO connected with push buttons. Now you have to configure the GPIO pins connected with the relays and switches. Now, if you want to use pushbuttons then just connect the pushbuttons across the GPIO pins and GND pin instead of switches. As we are now finished with the build process for our smart pot, we can move on to the programming part. For this project, we are using some libraries for easy programming.
The core component of this “Smart Home Automation system” is Node MCU which is considered as a brain or controlling device of the system. The data sent from the IoT Android App to the Firebase realtime database, which is hosted in the cloud. Today, we are going to put that web server in use and control home appliances with it. Now it’s time to choose a unique username for your bot.
Wifi & Voice Controlled Home Automation Using NodeMCU & Android
For that, follow the steps below.First, download and install the Blynk app on your phone. Then, sign up for this app using your Email address. After, run this app and click the “New project” button. Please refer to the circuit diagram to connect the pushbuttons or switches. If the NodeMCU is connected with Wi-Fi then you can monitor the real-time feedback in the Blynk IoT App. From above when you click on “Email All”, an authentication token will be sent to your mail address.
Now connect the IN-1, IN-2, IN-3, and IN-4 pins of the relay module with the digital-0, digital-1, digital-2, and digital-3 pins of the NodeMCU. In this project we learn how to make IoT Based Home Automation Project using Blynk & NodeMCU ESP8266. One of the most common & popular hobby projects you will come across the internet is Smart Home Automation Project. By Home Automation we mean controlling lighting, climate, entertainment systems, and appliances without a manual switch. It may also include home security such as access control and alarm systems.
Step 2: Control Relays Using Blynk IoT App
Get instant access to our FREE eBooks, Resources, and Exclusive Electronics Projects by entering your email address below. Home Automation using ESP8266 eBook and video course » Build IoT and home automation projects. Unfortunately, at the moment there isn’t TLS support on the AsyncWebServer library, you would need to use a different library and rewrite the code. Home Automation using ESP8266 eBook and video course »Build IoT and home automation projects.
Tap OFF for turning off the respective appliance. In the setup section, I defined the modes of pins and started the serial communication at a baud rate of 9600. We can’t directly connect the motor pump to the microcontroller because pumps will draw more current leading to the destruction of the microcontroller. So to control the pump, I used the L293D IC module, I choose this IC to decrease the size.
Circuits DIY
It also allows using other API to create programs to integrate Telegram in their applications. Home automation now becomes an essential part of IoT applications and people use their smartphone to control home appliances from anywhere over internet. In this IoT project we will control an AC lamp with a text message from Telegram application using NodeMCU. Finally, I send the moisture level and water level values to blynk server. In this void, I read the humidity and temperature through DHT sensor and stored that float value in h hand t.
It has GPIO, SPI, I2C, ADC, PWM AND UART pins for communication and controlling other peripherals attached to it. On board NodeMCU has CP2102 IC which provides USB to TTL functionality. In this project we are going to use D0 GPIO pin to change the state of the relay. Connect the VCC pin of the relay module with the VIN pin of the NodeMCU and the GND pin of the relay module with the GND pin of the NodeMCU. Join one wire of the AC bulb with the 220-volts AC supply and the other to a pin of the first relay module.
When button is Press.Using a web interface which is design in HTML & CSS. First, click the relay control buttons one by one and name them as you like. Then, change the relay control buttons PIN D5 and D6 respectively.
Here, I have used the tasmota.bin firmware for this project. Copy the IP address and paste it to access the home automation. Semicon Media is a unique collection of online media, focused purely on the Electronics Community across the globe.
You can make this project just by using NodeMCU and 4-channel relay module. But if you use PCB then you need the following components. In this project, all the control is done by the Blynk Application. Blynk is a Platform with IOS and Android apps to control Arduino, Raspberry Pi, and the likes over the Internet. It’s a digital dashboard where you can build a graphic interface for your project by simply dragging and dropping widgets. The code for today’s tutorial will enable us to control appliances connected to the GPIOs of the NodeMCU board remotely.
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