1.Getting Started with IoT
The Internet of Things has revolutionized physical world interactions. Learn to build professional IoT solutions.
2.Hardware Requirements
- Raspberry Pi 4 (4GB RAM)
- MicroSD card (32GB)
- DHT22 sensor
- Soil moisture sensor
- Relay module
3.Setup
sudo apt update
curl -fsSL https://deb.nodesource.com/setup_18.x | sudo -E bash -
sudo apt install -y nodejs
4.Building Smart Irrigation
const { Gpio } = require('onoff');
class SensorManager {
constructor() {
this.soilSensor = new Gpio(17, 'in');
this.relay = new Gpio(27, 'out');
}
async readSoilMoisture() {
const value = this.soilSensor.readSync();
return (value / 1023) * 100;
}
}
5.Cloud Integration
Connect to Parse Server for data storage and remote monitoring.
6.Conclusion
Raspberry Pi and Node.js provide a powerful platform for IoT solutions.