How to Develop a Simple IoT App Using Low-Code

Build a Simple IoT App Using a Low-Code Platform

Develop a Simple IoT App Using Low-Code Platform

Instruction for Simple IOT App

Here are the instructions for college students who want to build a simple IoT app using low-code platform:

Purchase a temperature sensor and a microcontroller board such as an ESP8266.
Create an account on Adafruit IO and follow the instructions to set up your first feed.
Install the Arduino IDE on your computer and configure it to work with your microcontroller board.
Use the code provided above as a starting point, modify it to include your WiFi credentials and Adafruit IO feed information, and upload it to your microcontroller board.
Create a dashboard in Adafruit IO and add a block to display your temperature data.
Run your microcontroller board and observe the temperature data being sent to Adafruit IO and displayed on your dashboard.

By following these steps, you will have built a simple IoT app that demonstrates how to read sensor data and visualize it in real-time using a no-code platform. This project can be expanded upon in many ways, such as by adding additional sensors or integrating with other cloud services.

Steps to Build IoT App Using Low-Code Platform

Create an Adafruit IO account at https://io.adafruit.com/
Click on "Feeds" on the left-hand menu and create a new feed called "Temperature".
Connect a temperature sensor to your microcontroller (e.g. an ESP8266) and upload the following code to read the temperature data and send it to Adafruit IO:

#include #include #include #include #include // WiFi credentials const char* ssid = "your-ssid"; const char* password = "your-password"; // Adafruit IO credentials #define AIO_USERNAME "your-username" #define AIO_KEY "your-key" #define AIO_FEED "Temperature" // DS18B20 temperature sensor #define ONE_WIRE_BUS 2 OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); // MQTT client WiFiClient client; Adafruit_MQTT_Client mqtt(&client, "io.adafruit.com", 1883, AIO_USERNAME, AIO_KEY); // MQTT temperature feed Adafruit_MQTT_Publish temperature = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/" AIO_FEED); void setup() Serial.begin(9600); // Connect to WiFi WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) delay(1000); Serial.println("Connecting to WiFi..."); Serial.println("Connected to WiFi"); // Connect to MQTT broker mqtt.connect(); while (!mqtt.connected()) delay(1000); Serial.println("Connecting to MQTT broker..."); Serial.println("Connected to MQTT broker"); // Start temperature sensor sensors.begin(); void loop() // Read temperature sensors.requestTemperatures(); float tempC = sensors.getTempCByIndex(0); Serial.print("Temperature: "); Serial.print(tempC); Serial.println(" °C"); // Publish temperature to MQTT feed temperature.publish(tempC); delay(10000); // Wait 10 seconds

Once you've uploaded the code, go back to Adafruit IO and click on "Dashboards" on the left-hand menu. Create a new dashboard called "Temperature" and add a new block of type "Line Chart". Configure the block to show the "Temperature" feed you created earlier.
Now, whenever you run the code on your microcontroller, it will send temperature data to Adafruit IO, which will be displayed on the line chart block in your dashboard.

Must Read:

In conclusion, building an IoT app using a no-code platform like Adafruit IO is a simple and straightforward process. With just a few steps, you can connect a microcontroller to a cloud-based service and visualize sensor data in real-time. This is a great way to learn about IoT and start building your own smart devices. https://www.coderesist.com/how-to-develop-a-simple-iot-app-using-low-code/?feed_id=12020&_unique_id=646554a0e63ec

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